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Wu T, Ning S, Zhang H, Cao Y, Li X, Hao J, Wang L. Role of ferroptosis in neuroimmunity and neurodegeneration in multiple sclerosis revealed by multi-omics data. J Cell Mol Med 2024; 28:e18396. [PMID: 38801304 PMCID: PMC11129625 DOI: 10.1111/jcmm.18396] [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: 01/01/2024] [Revised: 04/10/2024] [Accepted: 04/30/2024] [Indexed: 05/29/2024] Open
Abstract
Previous studies have found that ferroptosis plays an important role in a variety of neurological diseases. However, the precise role of ferroptosis in the multiple sclerosis patients remains uncertain. We defined and validated a computational metric of ferroptosis levels. The ferroptosis scores were computed using the AUCell method, which reflects the enrichment scores of ferroptosis-related genes through gene ranking. The reliability of the ferroptosis score was assessed using various methods, involving cells induced to undergo ferroptosis by six different ferroptosis inducers. Through a comprehensive approach integrating snRNA-seq, spatial transcriptomics, and spatial proteomics data, we explored the role of ferroptosis in multiple sclerosis. Our findings revealed that among seven sampling regions of different white matter lesions, the edges of active lesions exhibited the highest ferroptosis score, which was associated with activation of the phagocyte system. Remyelination lesions exhibit the lowest ferroptosis score. In the cortex, ferroptosis score were elevated in neurons, relevant to a variety of neurodegenerative disease-related pathways. Spatial transcriptomics demonstrated a significant co-localization among ferroptosis score, neurodegeneration and microglia, which was verified by spatial proteomics. Furthermore, we established a diagnostic model of multiple sclerosis based on 24 ferroptosis-related genes in the peripheral blood. Ferroptosis might exhibits a dual role in the context of multiple sclerosis, relevant to both neuroimmunity and neurodegeneration, thereby presenting a promising and novel therapeutic target. Ferroptosis-related genes in the blood that could potentially serve as diagnostic and prognostic markers for multiple sclerosis.
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Affiliation(s)
- Tao Wu
- Department of NeurologyXuanwu Hospital, Capital Medical UniversityBeijingChina
- National Center for Neurological DisordersBeijingChina
| | - Shangwei Ning
- College of Bioinformatics Science and TechnologyHarbin Medical UniversityHarbinChina
| | - Huixue Zhang
- Department of NeurologyThe Second Affiliated Hospital, Harbin Medical UniversityHarbinChina
| | - Yuze Cao
- Department of NeurologyPeking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Xia Li
- College of Bioinformatics Science and TechnologyHarbin Medical UniversityHarbinChina
| | - Junwei Hao
- Department of NeurologyXuanwu Hospital, Capital Medical UniversityBeijingChina
- National Center for Neurological DisordersBeijingChina
| | - Lihua Wang
- Department of NeurologyThe Second Affiliated Hospital, Harbin Medical UniversityHarbinChina
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Mehmood A, Shah S, Guo RY, Haider A, Shi M, Ali H, Ali I, Ullah R, Li B. Methyl-CpG-Binding Protein 2 Emerges as a Central Player in Multiple Sclerosis and Neuromyelitis Optica Spectrum Disorders. Cell Mol Neurobiol 2023; 43:4071-4101. [PMID: 37955798 DOI: 10.1007/s10571-023-01432-7] [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: 08/27/2023] [Accepted: 10/27/2023] [Indexed: 11/14/2023]
Abstract
MECP2 and its product methyl-CpG binding protein 2 (MeCP2) are associated with multiple sclerosis (MS) and neuromyelitis optica spectrum disorders (NMOSD), which are inflammatory, autoimmune, and demyelinating disorders of the central nervous system (CNS). However, the mechanisms and pathways regulated by MeCP2 in immune activation in favor of MS and NMOSD are not fully understood. We summarize findings that use the binding properties of MeCP2 to identify its targets, particularly the genes recognized by MeCP2 and associated with several neurological disorders. MeCP2 regulates gene expression in neurons, immune cells and during development by modulating various mechanisms and pathways. Dysregulation of the MeCP2 signaling pathway has been associated with several disorders, including neurological and autoimmune diseases. A thorough understanding of the molecular mechanisms underlying MeCP2 function can provide new therapeutic strategies for these conditions. The nervous system is the primary system affected in MeCP2-associated disorders, and other systems may also contribute to MeCP2 action through its target genes. MeCP2 signaling pathways provide promise as potential therapeutic targets in progressive MS and NMOSD. MeCP2 not only increases susceptibility and induces anti-inflammatory responses in immune sites but also leads to a chronic increase in pro-inflammatory cytokines gene expression (IFN-γ, TNF-α, and IL-1β) and downregulates the genes involved in immune regulation (IL-10, FoxP3, and CX3CR1). MeCP2 may modulate similar mechanisms in different pathologies and suggest that treatments for MS and NMOSD disorders may be effective in treating related disorders. MeCP2 regulates gene expression in MS and NMOSD. However, dysregulation of the MeCP2 signaling pathway is implicated in these disorders. MeCP2 plays a role as a therapeutic target for MS and NMOSD and provides pathways and mechanisms that are modulated by MeCP2 in the regulation of gene expression.
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Affiliation(s)
- Arshad Mehmood
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, People's Republic of China
- Key Laboratory of Neurology of Hebei Province, Shijiazhuang, 050000, Hebei, People's Republic of China
| | - Suleman Shah
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Health Science Center, Shenzhen University, Shenzhen, China
| | - Ruo-Yi Guo
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, People's Republic of China
- Key Laboratory of Neurology of Hebei Province, Shijiazhuang, 050000, Hebei, People's Republic of China
| | - Arsalan Haider
- Key Lab of Health Psychology, Institute of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Mengya Shi
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, People's Republic of China
- Key Laboratory of Neurology of Hebei Province, Shijiazhuang, 050000, Hebei, People's Republic of China
| | - Hamid Ali
- Department of Biosciences, COMSATS University Islamabad, Park Road Tarlai Kalan, Islamabad, 44000, Pakistan
| | - Ijaz Ali
- Centre for Applied Mathematics and Bioinformatics, Gulf University for Science and Technology, Hawally, 32093, Kuwait
| | - Riaz Ullah
- Medicinal Aromatic and Poisonous Plants Research Center, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Bin Li
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, People's Republic of China.
- Key Laboratory of Neurology of Hebei Province, Shijiazhuang, 050000, Hebei, People's Republic of China.
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Marinho D, Ferreira IL, Lorenzoni R, Cardoso SM, Santana I, Rego AC. Reduction of class I histone deacetylases ameliorates ER-mitochondria cross-talk in Alzheimer's disease. Aging Cell 2023; 22:e13895. [PMID: 37358017 PMCID: PMC10410063 DOI: 10.1111/acel.13895] [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: 12/08/2022] [Revised: 04/30/2023] [Accepted: 05/12/2023] [Indexed: 06/27/2023] Open
Abstract
Several molecular mechanisms have been described in Alzheimer's disease (AD), including repressed gene transcription and mitochondrial and endoplasmic reticulum (ER) dysfunction. In this study, we evaluate the potential efficacy of transcriptional modifications exerted by inhibition or knockdown of class I histone deacetylases (HDACs) in ameliorating ER-mitochondria cross-talk in AD models. Data show increased HDAC3 protein levels and decreased acetyl-H3 in AD human cortex, and increased HDAC2-3 in MCI peripheral human cells, HT22 mouse hippocampal cells exposed to Aβ1-42 oligomers (AβO) and APP/PS1 mouse hippocampus. Tacedinaline (Tac, a selective class I HDAC inhibitor) counteracted the increase in ER-Ca2+ retention and mitochondrial Ca2+ accumulation, mitochondrial depolarization and impaired ER-mitochondria cross-talk, as observed in 3xTg-AD mouse hippocampal neurons and AβO-exposed HT22 cells. We further demonstrated diminished mRNA levels of proteins involved in mitochondrial-associated ER membranes (MAM) in cells exposed to AβO upon Tac treatment, along with reduction in ER-mitochondria contacts (MERCS) length. HDAC2 silencing reduced ER-mitochondria Ca2+ transfer and mitochondrial Ca2+ retention, while knockdown of HDAC3 decreased ER-Ca2+ accumulation in AβO-treated cells. APP/PS1 mice treated with Tac (30 mg/kg/day) also showed regulation of mRNA levels of MAM-related proteins, and reduced Aβ levels. These data demonstrate that Tac normalizes Ca2+ signaling between mitochondria and ER, involving the tethering between the two organelles in AD hippocampal neural cells. Tac-mediated AD amelioration occurs through the regulation of protein expression at MAM, as observed in AD cells and animal models. Data support transcriptional regulation of ER-mitochondria communication as a promising target for innovative therapeutics in AD.
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Affiliation(s)
- Daniela Marinho
- CNC‐Center for Neuroscience and Cell BiologyUniversity of CoimbraCoimbraPortugal
- IIIUC‐Institute for Interdisciplinary ResearchUniversity of CoimbraCoimbraPortugal
- CIBB‐Center for Innovative Biomedicine and BiotechnologyUniversity of CoimbraCoimbraPortugal
| | - Ildete Luísa Ferreira
- CNC‐Center for Neuroscience and Cell BiologyUniversity of CoimbraCoimbraPortugal
- IIIUC‐Institute for Interdisciplinary ResearchUniversity of CoimbraCoimbraPortugal
- CIBB‐Center for Innovative Biomedicine and BiotechnologyUniversity of CoimbraCoimbraPortugal
| | - Ricardo Lorenzoni
- CNC‐Center for Neuroscience and Cell BiologyUniversity of CoimbraCoimbraPortugal
- IIIUC‐Institute for Interdisciplinary ResearchUniversity of CoimbraCoimbraPortugal
- CIBB‐Center for Innovative Biomedicine and BiotechnologyUniversity of CoimbraCoimbraPortugal
| | - Sandra M. Cardoso
- CNC‐Center for Neuroscience and Cell BiologyUniversity of CoimbraCoimbraPortugal
- CIBB‐Center for Innovative Biomedicine and BiotechnologyUniversity of CoimbraCoimbraPortugal
- FMUC‐Faculty of MedicineUniversity of CoimbraCoimbraPortugal
| | - Isabel Santana
- CNC‐Center for Neuroscience and Cell BiologyUniversity of CoimbraCoimbraPortugal
- CIBB‐Center for Innovative Biomedicine and BiotechnologyUniversity of CoimbraCoimbraPortugal
- FMUC‐Faculty of MedicineUniversity of CoimbraCoimbraPortugal
- Neurology DepartmentCHUC‐Centro Hospitalar e Universitário de CoimbraCoimbraPortugal
| | - A. Cristina Rego
- CNC‐Center for Neuroscience and Cell BiologyUniversity of CoimbraCoimbraPortugal
- CIBB‐Center for Innovative Biomedicine and BiotechnologyUniversity of CoimbraCoimbraPortugal
- FMUC‐Faculty of MedicineUniversity of CoimbraCoimbraPortugal
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Toscano-Marquez F, Romero Y, Espina-Ordoñez M, Cisneros J. Absence of HDAC3 by Matrix Stiffness Promotes Chromatin Remodeling and Fibroblast Activation in Idiopathic Pulmonary Fibrosis. Cells 2023; 12:cells12071020. [PMID: 37048093 PMCID: PMC10093275 DOI: 10.3390/cells12071020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 03/05/2023] [Accepted: 03/22/2023] [Indexed: 03/29/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic and fatal disease characterized by progressive and irreversible lung scarring associated with persistent activation of fibroblasts. Epigenetics could integrate diverse microenvironmental signals, such as stiffness, to direct persistent fibroblast activation. Histone modifications by deacetylases (HDAC) may play an essential role in the gene expression changes involved in the pathological remodeling of the lung. Particularly, HDAC3 is crucial for maintaining chromatin and regulating gene expression, but little is known about its role in IPF. In the study, control and IPF-derived fibroblasts were used to determine the influence of HDAC3 on chromatin remodeling and gene expression associated with IPF signature. Additionally, the cells were grown on hydrogels to mimic the stiffness of a fibrotic lung. Our results showed a decreased HDAC3 in the nucleus of IPF fibroblasts, which correlates with changes in nucleus size and heterochromatin loss. The inhibition of HDAC3 with a pharmacological inhibitor causes hyperacetylation of H3K9 and provokes an increased expression of Col1A1, ACTA2, and p21. Comparable results were found in hydrogels, where matrix stiffness promotes the loss of nuclear HDAC3 and increases the profibrotic signature. Finally, latrunculin b was used to confirm that changes by stiffness depend on the mechanotransduction signals. Together, these results suggest that HDAC3 could be a link between epigenetic mechanisms and the fibrotic microenvironment.
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Affiliation(s)
- Fernanda Toscano-Marquez
- Laboratorio de Biopatología Pulmonar INER-Ciencias-UNAM, Departamento de Fibrosis Pulmonar, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas (INER), Mexico City 14080, Mexico
- Posgrado en Ciencias Biológicas, Unidad de Posgrado, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Yair Romero
- Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Marco Espina-Ordoñez
- Laboratorio de Biopatología Pulmonar INER-Ciencias-UNAM, Departamento de Fibrosis Pulmonar, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas (INER), Mexico City 14080, Mexico
- Posgrado en Ciencias Biológicas, Unidad de Posgrado, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - José Cisneros
- Laboratorio de Biopatología Pulmonar INER-Ciencias-UNAM, Departamento de Fibrosis Pulmonar, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas (INER), Mexico City 14080, Mexico
- Correspondence:
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Jayaraman S, Jayaraman A. Impact of histone modifier-induced protection against autoimmune encephalomyelitis on multiple sclerosis treatment. Front Neurol 2022; 13:980758. [PMID: 36313502 PMCID: PMC9614082 DOI: 10.3389/fneur.2022.980758] [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: 06/28/2022] [Accepted: 09/09/2022] [Indexed: 11/13/2022] Open
Abstract
Multiple sclerosis is a progressive demyelinating central nervous system disorder with unknown etiology. The condition has heterogeneous presentations, including relapsing-remitting multiple sclerosis and secondary and primary progressive multiple sclerosis. The genetic and epigenetic mechanisms underlying these various forms of multiple sclerosis remain elusive. Many disease-modifying therapies approved for multiple sclerosis are broad-spectrum immunomodulatory drugs that reduce relapses but do not halt the disease progression or neuroaxonal damage. Some are also associated with many severe side effects, including fatalities. Improvements in disease-modifying treatments especially for primary progressive multiple sclerosis remain an unmet need. Several experimental animal models are available to decipher the mechanisms involved in multiple sclerosis. These models help us decipher the advantages and limitations of novel disease-modifying therapies for multiple sclerosis.
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Affiliation(s)
- Sundararajan Jayaraman
- Department of Surgery, University of Illinois College of Medicine, Peoria, IL, United States
- *Correspondence: Sundararajan Jayaraman
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Lin WS, Lin SJ, Liao PY, Suresh D, Hsu TR, Wang PY. Role of Ketogenic Diets in Multiple Sclerosis and Related Animal Models: An Updated Review. Adv Nutr 2022; 13:2002-2014. [PMID: 35679067 PMCID: PMC9526852 DOI: 10.1093/advances/nmac065] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/25/2022] [Accepted: 06/02/2022] [Indexed: 01/28/2023] Open
Abstract
Prescribing a ketogenic diet (KD) is a century-old dietary intervention mainly used in the context of intractable epilepsy. The classic KD and its variants regained popularity in recent decades, and they are considered potentially beneficial in a variety of neurological conditions other than epilepsy. Many patients with multiple sclerosis (MS) have attempted diet modification for better control of their disease, although evidence thus far remains insufficient to recommend a specific diet for these patients. The results of 3 pilot clinical trials of KD therapy for MS, as well as several related studies, have been reported in recent years. The preliminary findings suggest that KD is safe, feasible, and potentially neuroprotective and disease-modifying for patients with MS. Research on corresponding rodent models has also lent support to the efficacy of KD in the prevention and treatment of experimental autoimmune encephalomyelitis and toxin-induced inflammatory demyelinating conditions in the brain. Furthermore, the animal studies have yielded mechanistic insights into the molecular mechanisms of KD action in relevant situations, paving the way for precision nutrition. Herein we review and synthesize recent advances and also identify unresolved issues, such as the roles of adipokines and gut microbiota, in this field. Hopefully this panoramic view of current understanding can inform future research directions and clinical practice with regard to KD in MS and related conditions.
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Affiliation(s)
| | - Shan-Ju Lin
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan
| | - Pei-Yin Liao
- Department of Dietetics, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan
| | - Divya Suresh
- Department of Pediatrics, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan
| | - Ting-Rong Hsu
- Department of Pediatrics, Taipei Veterans General Hospital, Taipei, Taiwan,School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Pei-Yu Wang
- Graduate Institute of Brain and Mind Sciences, College of Medicine, National Taiwan University, Taipei, Taiwan,Neurobiology and Cognitive Science Center, National Taiwan University, Taipei, Taiwan,Program in Translational Medicine, National Taiwan University and Academia Sinica, Taipei, Taiwan,Taiwan International Graduate Program in Interdisciplinary Neuroscience, National Taiwan University and Academia Sinica, Taipei, Taiwan,Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
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7
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Sacristán-Gómez P, Serrano-Somavilla A, González-Amaro R, Martínez-Hernández R, Marazuela M. Analysis of Expression of Different Histone Deacetylases in Autoimmune Thyroid Disease. J Clin Endocrinol Metab 2021; 106:3213-3227. [PMID: 34272941 PMCID: PMC8530745 DOI: 10.1210/clinem/dgab526] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT Histone deacetylases (HDACs) and histone acetyltransferases (HAT) have an important role in the regulation of gene transcription as well as in the development and function of CD4+Foxp3+ T regulatory (Treg) cells. Our group and others have reported that patients with autoimmune thyroid disease (AITD) show abnormalities in the levels and function of different Treg cell subsets. OBJECTIVE We aimed to analyze the levels of expression of several HDACs and the Tip60 HAT in the thyroid gland and immune cells from patients with AITD. METHODS The expression of HDAC1-11 and the Tip60 HAT, at RNA and protein levels, were determined in thyroid tissue from 20 patients with AITD and 10 healthy controls and these findings were correlated with clinical data. HDAC9 and Tip60 levels were also analyzed in thyroid cell cultures, stimulated or not with proinflammatory cytokines, as well as in different cell subsets from peripheral blood mononuclear cells. RESULTS Altered expression of different HDACs was observed in thyroid tissue from AITD patients, including a significant increase in HDAC9, at RNA and protein levels. Likewise, HDAC9 expression was increased in peripheral blood mononuclear cells particularly in Treg cells in patients with AITD. In contrast, Tip60 expression was reduced in thyroid gland samples from patients with Hashimoto thyroiditis. CONCLUSION Our results indicate that HDAC expression is dysregulated in thyroid gland and immune cells from patients with AITD, suggesting involvement in the pathogenesis of this condition.
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Affiliation(s)
- Pablo Sacristán-Gómez
- Department of Endocrinology, Hospital Universitario de la Princesa, Instituto de Investigación Princesa, Universidad Autónoma de Madrid, 28006 Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER GCV14/ER/12), Madrid, Spain
| | - Ana Serrano-Somavilla
- Department of Endocrinology, Hospital Universitario de la Princesa, Instituto de Investigación Princesa, Universidad Autónoma de Madrid, 28006 Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER GCV14/ER/12), Madrid, Spain
| | - Roberto González-Amaro
- Department of Immunology, School of Medicine, UASLP, 78210 San Luis Potosí, SLP, Mexico
- Center for Applied Research in Health and Biomedicine, UASLP, 78210 San Luis Potosí, SLP, Mexico
| | - Rebeca Martínez-Hernández
- Department of Endocrinology, Hospital Universitario de la Princesa, Instituto de Investigación Princesa, Universidad Autónoma de Madrid, 28006 Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER GCV14/ER/12), Madrid, Spain
- Rebeca Martínez-Hernández, PhD, Hospital de la Princesa, C/ Diego de León 62, 28006 Madrid, Spain.
| | - Mónica Marazuela
- Department of Endocrinology, Hospital Universitario de la Princesa, Instituto de Investigación Princesa, Universidad Autónoma de Madrid, 28006 Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER GCV14/ER/12), Madrid, Spain
- Correspondence: Monica Marazuela, MD, PhD, Hospital de la Princesa, C/ Diego de León 62, 28006 Madrid, Spain.
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Zhang N, Jin L, Liu C, Zhang R, Siebert HC, Li Y, Loers G, Petridis AK, Xia Z, Dong H, Zheng X. An antarctic krill oil-based diet elicits neuroprotective effects by inhibiting oxidative stress and rebalancing the M1/M2 microglia phenotype in a cuprizone model for demyelination. J Funct Foods 2021. [DOI: 10.1016/j.jff.2020.104309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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Hamminger P, Rica R, Ellmeier W. Histone deacetylases as targets in autoimmune and autoinflammatory diseases. Adv Immunol 2020; 147:1-59. [PMID: 32981634 DOI: 10.1016/bs.ai.2020.06.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Reversible lysine acetylation of histones is a key epigenetic regulatory process controlling gene expression. Reversible histone acetylation is mediated by two opposing enzyme families: histone acetyltransferases (HATs) and histone deacetylases (HDACs). Moreover, many non-histone targets of HATs and HDACs are known, suggesting a crucial role for lysine acetylation as a posttranslational modification on the cellular proteome and protein function far beyond chromatin-mediated gene regulation. The HDAC family consists of 18 members and pan-HDAC inhibitors (HDACi) are clinically used for the treatment of certain types of cancer. HDACi or individual HDAC member-deficient (cell lineage-specific) mice have also been tested in a large number of preclinical mouse models for several autoimmune and autoinflammatory diseases and in most cases HDACi treatment results in an attenuation of clinical disease severity. A reduction of disease severity has also been observed in mice lacking certain HDAC members. This indicates a high therapeutic potential of isoform-selective HDACi for immune-mediated diseases. Isoform-selective HDACi and thus targeted inactivation of HDAC isoforms might also overcome the adverse effects of current clinically approved pan-HDACi. This review provides a brief overview about the fundamental function of HDACs as epigenetic regulators, highlights the roles of HDACs beyond chromatin-mediated control of gene expression and summarizes the studies showing the impact of HDAC inhibitors and genetic deficiencies of HDAC members for the outcome of autoimmune and autoinflammatory diseases with a focus on rheumatoid arthritis, inflammatory bowel disease and experimental autoimmune encephalomyelitis (EAE) as an animal model of multiple sclerosis.
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Affiliation(s)
- Patricia Hamminger
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Ramona Rica
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Wilfried Ellmeier
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria.
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Abstract
Multiple sclerosis (MS) is an aggravating autoimmune disease that cripples young patients slowly with physical, sensory and cognitive deficits. The break of self-tolerance to neuronal antigens is the key to the pathogenesis of MS, with autoreactive T cells causing demyelination that subsequently leads to inflammation-mediated neurodegenerative events in the central nervous system. The exact etiology of MS remains elusive; however, the interplay of genetic and environmental factors contributes to disease development and progression. Given that genetic variation only accounts for a fraction of risk for MS, extrinsic risk factors including smoking, infection and lack of vitamin D or sunshine, which cause changes in gene expression, contribute to disease development through epigenetic regulation. To date, there is a growing body of scientific evidence to support the important roles of epigenetic processes in MS. In this chapter, the three main layers of epigenetic regulatory mechanisms, namely DNA methylation, histone modification and microRNA-mediated gene regulation, will be discussed, with a particular focus on the role of epigenetics on dysregulated immune responses and neurodegenerative events in MS. Also, the potential for epigenetic modifiers as biomarkers and therapeutics for MS will be reviewed.
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Affiliation(s)
- Vera Sau-Fong Chan
- Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.
- Queen Mary Hospital, Hong Kong SAR, China.
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Shang Z, Sun W, Zhang M, Xu L, Jia X, Zhang R, Fu S. Identification of key genes associated with multiple sclerosis based on gene expression data from peripheral blood mononuclear cells. PeerJ 2020; 8:e8357. [PMID: 32117605 PMCID: PMC7003695 DOI: 10.7717/peerj.8357] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 12/04/2019] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to identify the potential key candidate genes of multiple sclerosis (MS) and uncover mechanisms in MS. We combined data from the microarray expression profile of three MS stages and performed bioinformatics analysis. Differentially expressed genes (DEGs) were identified among the distinct stages of MS and healthy controls, and a total of 349 shared DEGs were identified. Gene ontology (GO) and pathway enrichment analyses showed that the DEGs were significantly enriched in the biological processes (BPs) of purine-related metabolic processes and signaling, especially the common DEGs, which were enriched in some immunological processes. Most of the DEGs were enriched in signaling pathways associated with the immune system, some immune diseases and infectious disease pathways. Through a protein-protein interaction (PPI) network analysis and a gene expression regulatory network constructed with MS-related miRNAs, we confirmed FOS, TP53, VEGFA, JUN, HIF1A, RB1, PTGS2, CXCL8, OAS2, NFKBIA and OAS1 as candidate genes of MS. Furthermore , we explored the potential SNPs associated with MS by database mining. In conclusion, this study provides the identified genes, SNPs, biological processes, and cellular pathways associated with MS. The uncovered candidate genes may be potential biomarkers involved in the diagnosis and therapy of MS.
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Affiliation(s)
- Zhenwei Shang
- Harbin Medical University, Laboratory of Medical Genetics, Harbin, China.,Harbin Medical University, Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Ministry of Education, Harbin, China.,Harbin Medical University, College of Bioinformatics Science and Technology, Harbin, China
| | - Wenjing Sun
- Harbin Medical University, Laboratory of Medical Genetics, Harbin, China.,Harbin Medical University, Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Ministry of Education, Harbin, China
| | - Mingming Zhang
- Harbin Medical University, Laboratory of Medical Genetics, Harbin, China.,Harbin Medical University, Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Ministry of Education, Harbin, China.,Harbin Medical University, College of Bioinformatics Science and Technology, Harbin, China
| | - Lidan Xu
- Harbin Medical University, Laboratory of Medical Genetics, Harbin, China.,Harbin Medical University, Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Ministry of Education, Harbin, China
| | - Xueyuan Jia
- Harbin Medical University, Laboratory of Medical Genetics, Harbin, China.,Harbin Medical University, Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Ministry of Education, Harbin, China
| | - Ruijie Zhang
- Harbin Medical University, College of Bioinformatics Science and Technology, Harbin, China
| | - Songbin Fu
- Harbin Medical University, Laboratory of Medical Genetics, Harbin, China.,Harbin Medical University, Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Ministry of Education, Harbin, China
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Analysis of the Bach2 and HDAC3 Expression in Iranian Patients with Acute Myeloid Leukemia. INTERNATIONAL JOURNAL OF CANCER MANAGEMENT 2019. [DOI: 10.5812/ijcm.91545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Identifying the culprits in neurological autoimmune diseases. J Transl Autoimmun 2019; 2:100015. [PMID: 32743503 PMCID: PMC7388404 DOI: 10.1016/j.jtauto.2019.100015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/27/2019] [Accepted: 09/03/2019] [Indexed: 12/16/2022] Open
Abstract
The target organ of neurological autoimmune diseases (NADs) is the central or peripheral nervous system. Multiple sclerosis (MS) is the most common NAD, whereas Guillain-Barré syndrome (GBS), myasthenia gravis (MG), and neuromyelitis optica (NMO) are less common NADs, but the incidence of these diseases has increased exponentially in the last few years. The identification of a specific culprit in NADs is challenging since a myriad of triggering factors interplay with each other to cause an autoimmune response. Among the factors that have been associated with NADs are genetic susceptibility, epigenetic mechanisms, and environmental factors such as infection, microbiota, vitamins, etc. This review focuses on the most studied culprits as well as the mechanisms used by these to trigger NADs. Neurological autoimmune diseases are caused by a complex interaction between genes, environmental factors, and epigenetic deregulation. Infectious agents can cause an autoimmune reaction to myelin epitopes through molecular mimicry and/or bystander activation. Gut microbiota dysbiosis contributes to neurological autoimmune diseases. Smoking increases the risk of NADs through inflammatory signaling pathways, oxidative stress, and Th17 differentiation. Deficiency in vitamin D favors NAD development through direct damage to the central and peripheral nervous system.
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14
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Integrative analysis revealed potential causal genetic and epigenetic factors for multiple sclerosis. J Neurol 2019; 266:2699-2709. [DOI: 10.1007/s00415-019-09476-w] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 07/14/2019] [Accepted: 07/15/2019] [Indexed: 12/12/2022]
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Sriram S, Shaginurova G, Tossberg JT, Natarajan C, Spurlock CF, Aune TM. Longitudinal changes in the expression of IL-33 and IL-33 regulated genes in relapsing remitting MS. PLoS One 2018; 13:e0208755. [PMID: 30562364 PMCID: PMC6298727 DOI: 10.1371/journal.pone.0208755] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 11/20/2018] [Indexed: 12/03/2022] Open
Abstract
Objective We tested the hypothesis that the expression of IL-33 in MS is dynamic and is likely to reflect the clinical and radiological changes during the course of RRMS. Methods MS with either clinical or radiological relapses were recruited for the study and followed for one year. IL-33 and a panel of genes was measured by q PCR and flow cytometry at different time points. Results Among 22 RRMS patients, 4 patients showed highest levels of IL-33 at the time they were recruited to the study (Month 0); in 14 patients highest levels of IL-33 were seen between 6–11 months after relapse and in 4 patients maximal levels of IL-33 were seen 12 months after relapse. A similar pattern of IL-33 kinetics was seen when IL-33 was measured by flow cytometry in an additional cohort of 12 patients. The timing of the improvement clinically did not correlate with IL-33 expression with highest expression levels either preceding or following clinical recovery. From our whole genome RNA-sequencing data we found a strong correlation between expression levels of IL-33 and a ~2000 mRNA genes. However, none of these genes encoded proteins involved in either innate or adaptive immunity. Rather, many of the genes that correlated highly with IL-33 encoded to proteins involved in DNA repair or mitochondrial function and mRNA splicing pathways. Interpretation Given the neuro-reparative and remodeling functions attributed to IL-33, it is likely that some of the novel genes we have uncovered may be involved in repair and recovery of the CNS in MS.
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Affiliation(s)
- Subramaniam Sriram
- Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, United States of America
- * E-mail:
| | - Guzel Shaginurova
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States of America
- IQuity, Inc., Nashville, TN, United States of America
| | | | - Chandramohan Natarajan
- Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Charles F. Spurlock
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Thomas M. Aune
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States of America
- Department of Pathology, Microbiology & Immunology, Vanderbilt University Medical Center, Nashville, TN, United States of America
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Vavougios GD, Zarogiannis SG, Krogfelt KA, Gourgoulianis K, Mitsikostas DD, Hadjigeorgiou G. Novel candidate genes of the PARK7 interactome as mediators of apoptosis and acetylation in multiple sclerosis: An in silico analysis. Mult Scler Relat Disord 2017; 19:8-14. [PMID: 29100048 DOI: 10.1016/j.msard.2017.10.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 09/30/2017] [Accepted: 10/20/2017] [Indexed: 12/30/2022]
Abstract
BACKGROUND currently only 4 studies have explored the potential role of PARK7's dysregulation in MS pathophysiology Currently, no study has evaluated the potential role of the PARK7 interactome in MS. OBJECTIVE The aim of our study was to assess the differential expression of PARK7 mRNA in peripheral blood mononuclears (PBMCs) donated from MS versus healthy patients using data mining techniques. METHODS The PARK7 interactome data from the GDS3920 profile were scrutinized for differentially expressed genes (DEGs); Gene Enrichment Analysis (GEA) was used to detect significantly enriched biological functions. RESULTS 27 differentially expressed genes in the MS dataset were detected; 12 of these (NDUFA4, UBA2, TDP2, NPM1, NDUFS3, SUMO1, PIAS2, KIAA0101, RBBP4, NONO, RBBP7 AND HSPA4) are reported for the first time in MS. Stepwise Linear Discriminant Function Analysis constructed a predictive model (Wilk's λ = 0.176, χ2 = 45.204, p = 1.5275e-10) with 2 variables (TIDP2, RBBP4) that achieved 96.6% accuracy when discriminating between patients and controls. Gene Enrichment Analysis revealed that induction and regulation of programmed / intrinsic cell death represented the most salient Gene Ontology annotations. Cross-validation on systemic lupus erythematosus and ischemic stroke datasets revealed that these functions are unique to the MS dataset. CONCLUSIONS Based on our results, novel potential target genes are revealed; these differentially expressed genes regulate epigenetic and apoptotic pathways that may further elucidate underlying mechanisms of autorreactivity in MS.
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Affiliation(s)
- George D Vavougios
- Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, BIOPOLIS, Larissa 41110, Greece.
| | - Sotirios G Zarogiannis
- Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, BIOPOLIS, Larissa 41110, Greece; Department of Physiology, Faculty of Medicine, University of Thessaly, BIOPOLIS, Larissa 41110, Greece
| | - Karen Angeliki Krogfelt
- Head of unit, Bacteria, Parasites & Fungi Statens Serum Institut, 5 Artillerivej, 45/112, DK-2300 Copenhagen, Denmark
| | - Konstantinos Gourgoulianis
- Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, BIOPOLIS, Larissa 41110, Greece
| | - Dimos Dimitrios Mitsikostas
- National and Kapodistrian University of Athens, 1st Division of Neurology, Eginition Hospital, Vasilissis Sofias 72-74, Athens 11528, Greece
| | - Georgios Hadjigeorgiou
- Department of Neurology, Faculty of Medicine, University of Thessaly, BIOPOLIS, Larissa 41110, Greece
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Lv H, Wu X, Ma G, Sun L, Meng J, Song X, Zhang J. An integrated bioinformatical analysis of miR-19a target genes in multiple myeloma. Exp Ther Med 2017; 14:4711-4720. [PMID: 29201171 PMCID: PMC5704339 DOI: 10.3892/etm.2017.5173] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 05/19/2017] [Indexed: 12/20/2022] Open
Abstract
MicroRNA (miR)-19a, as an oncomiR, has been studied in several types of cancer; however, its role in the development and progression of multiple myeloma (MM) remains unclear. The present study used a bioinformatics approach to investigate the involvement of miR-19a in MM. miR-19a targets were predicted using target prediction programs, followed by screening for differentially expressed genes in MM. The function of these genes was then annotated using gene ontology term enrichment, signaling pathway enrichment and protein-protein interaction (PPI) analysis. In addition, natural language processing (NLP) was performed to identify genes associated with MM. A total of 715 putative targets of miR-19a were identified in the present study, of which 40 were experimentally validated. A total of 121 genes were identified to be differentially expressed in MM, including 80 upregulated genes and 41 downregulated genes. Among the differentially expressed genes, ras homolog family member B, clathrin heavy chain, prosaposin and protein phosphatase 6 regulatory subunit 2 were predicted target genes of miR-19a. The results of NLP revealed that 2 of the differentially expressed genes, Y-box binding protein 1 and TP53 regulated inhibitor of apoptosis 1, were reported to be associated with MM. In addition, 41 target genes of miR-19a were identified to be associated with the development and progression of MM. These results may aid in understanding the molecular mechanisms of miR-19a in the development and progression of MM. In addition, the results of the present study indicate that targets genes of miR-19a are potential candidate biomarkers for MM.
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Affiliation(s)
- Hongyan Lv
- Department of Hematology, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
| | - Xianda Wu
- Department of Hematology, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
| | - Guiru Ma
- Department of Hematology, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
| | - Lixia Sun
- Department of Hematology, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
| | - Jianbo Meng
- Department of Hematology, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
| | - Xiaoning Song
- Department of Hematology, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
| | - Jinqiao Zhang
- Department of Hematology, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
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Joseph B, Khan M, Rhee P. Non-invasive diagnosis and treatment strategies for traumatic brain injury: an update. J Neurosci Res 2017; 96:589-600. [PMID: 28836292 DOI: 10.1002/jnr.24132] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 06/26/2017] [Accepted: 07/10/2017] [Indexed: 12/28/2022]
Abstract
PURPOSE OF REVIEW Traumatic Brain Injury (TBI) remains the leading cause of morbidity and mortality in U.S. Since the last decade, there have been several advances in the understanding and management of TBI that have shown the potential to improve outcomes. The aim of this review is to provide a useful overview of these potential diagnostic and treatment strategies that have yet to be proven, along with an assessment of their impact on outcomes after a TBI. RECENT FINDINGS Recent technical advances in the management of a TBI are grounded in a better understanding of the pathophysiology of primary and secondary insult to the brain after a TBI. Hence, clinical trials on humans should proceed in order to evaluate their efficacy and safety. SUMMARY Mortality associated with TBI remains high. Nonetheless, new diagnostic and therapeutic techniques have the potential to enhance early detection and prevention of secondary brain insult.
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Affiliation(s)
- Bellal Joseph
- Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, University of Arizona, Tucson, Arizona, USA
| | - Muhammad Khan
- Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, University of Arizona, Tucson, Arizona, USA
| | - Peter Rhee
- Division of Acute Care Surgery, Department of Surgery, Grady Memorial Hospital, Atlanta, Georgia, USA
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19
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Safari-Alighiarloo N, Rezaei-Tavirani M, Taghizadeh M, Tabatabaei SM, Namaki S. Network-based analysis of differentially expressed genes in cerebrospinal fluid (CSF) and blood reveals new candidate genes for multiple sclerosis. PeerJ 2016; 4:e2775. [PMID: 28028462 PMCID: PMC5183126 DOI: 10.7717/peerj.2775] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 11/08/2016] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND The involvement of multiple genes and missing heritability, which are dominant in complex diseases such as multiple sclerosis (MS), entail using network biology to better elucidate their molecular basis and genetic factors. We therefore aimed to integrate interactome (protein-protein interaction (PPI)) and transcriptomes data to construct and analyze PPI networks for MS disease. METHODS Gene expression profiles in paired cerebrospinal fluid (CSF) and peripheral blood mononuclear cells (PBMCs) samples from MS patients, sampled in relapse or remission and controls, were analyzed. Differentially expressed genes which determined only in CSF (MS vs. control) and PBMCs (relapse vs. remission) separately integrated with PPI data to construct the Query-Query PPI (QQPPI) networks. The networks were further analyzed to investigate more central genes, functional modules and complexes involved in MS progression. RESULTS The networks were analyzed and high centrality genes were identified. Exploration of functional modules and complexes showed that the majority of high centrality genes incorporated in biological pathways driving MS pathogenesis. Proteasome and spliceosome were also noticeable in enriched pathways in PBMCs (relapse vs. remission) which were identified by both modularity and clique analyses. Finally, STK4, RB1, CDKN1A, CDK1, RAC1, EZH2, SDCBP genes in CSF (MS vs. control) and CDC37, MAP3K3, MYC genes in PBMCs (relapse vs. remission) were identified as potential candidate genes for MS, which were the more central genes involved in biological pathways. DISCUSSION This study showed that network-based analysis could explicate the complex interplay between biological processes underlying MS. Furthermore, an experimental validation of candidate genes can lead to identification of potential therapeutic targets.
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Affiliation(s)
- Nahid Safari-Alighiarloo
- Proteomics Research Center, Department of Basic Science, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Mostafa Rezaei-Tavirani
- Proteomics Research Center, Department of Basic Science, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Mohammad Taghizadeh
- Bioinformatics Department, Institute of Biochemistry and Biophysics, Tehran University , Tehran , Iran
| | - Seyyed Mohammad Tabatabaei
- Medical Informatics Department, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Saeed Namaki
- Immunology Department, Faculty of Medical Sciences, Shahid Beheshti University of Medical Sciences , Tehran , Iran
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20
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Jeong MH, Ko H, Jeon H, Sung GJ, Park SY, Jun WJ, Lee YH, Lee J, Lee SW, Yoon HG, Choi KC. Delphinidin induces apoptosis via cleaved HDAC3-mediated p53 acetylation and oligomerization in prostate cancer cells. Oncotarget 2016; 7:56767-56780. [PMID: 27462923 PMCID: PMC5302952 DOI: 10.18632/oncotarget.10790] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 06/04/2016] [Indexed: 12/28/2022] Open
Abstract
Delphinidin is a major anthocyanidin compound found in various fruits. It has anti-inflammatory, anti-oxidant, and various other biological activities. In this study, we identified the epigenetic modulators that mediate the apoptotic effect of delphinidin in human prostate cancer cells. We found that treatment of LNCaP cells (a p53 wild-type, human prostate cancer cell line) with delphinidin increased caspase-3, -7, and -8 activity, whereas it decreased histone deacetylase activity. Among class I HDACs, the activity of HDAC3 was specifically inhibited by delphinidin. Moreover, the induction of apoptosis by delphinidin was dependent on caspase-mediated cleavage of HDAC3, which results in the acetylation and stabilization of p53. We also observed that delphinidin potently upregulated pro-apoptotic genes that are positively regulated by p53, and downregulated various anti-apoptotic genes. Taken together, these results show that delphinidin induces p53-mediated apoptosis by suppressing HDAC activity and activating p53 acetylation in human prostate cancer LNCaP cells. Therefore, delphinidin may be useful in the prevention of prostate cancer.
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Affiliation(s)
- Mi-Hyeon Jeong
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
- Department of Biochemistry and Molecular Biology, Center for Chronic Metabolic Disease Research, Brain Korea 21 Plus Project for Medical Sciences, Severance Medical Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Hyeonseok Ko
- Laboratory of Molecular Oncology, Cheil General Hospital & Women's Healthcare Center, Dankook University College of Medicine, Seoul, South Korea
| | - Hyelin Jeon
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
- Department of Pharmacology, University of Ulsan College of Medicine, Seoul, Korea
| | - Gi-Jun Sung
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
- Department of Pharmacology, University of Ulsan College of Medicine, Seoul, Korea
| | - Soo-Yeon Park
- Department of Biochemistry and Molecular Biology, Center for Chronic Metabolic Disease Research, Brain Korea 21 Plus Project for Medical Sciences, Severance Medical Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Woo Jin Jun
- Department of Food and Nutrition, Chonnam National University, Gwangju, South Korea
| | - Yoo-Hyun Lee
- Department of Food Science and Nutrition, The University of Suwon, Kyunggi-do, South Korea
| | - Jeongmin Lee
- Department of Medical Nutrition, Kyung Hee University, Yongin-si, Kyunggi-do, South Korea
| | - Sang-wook Lee
- Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Ho-Geun Yoon
- Department of Biochemistry and Molecular Biology, Center for Chronic Metabolic Disease Research, Brain Korea 21 Plus Project for Medical Sciences, Severance Medical Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Kyung-Chul Choi
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
- Department of Pharmacology, University of Ulsan College of Medicine, Seoul, Korea
- Cell Dysfunction Research Center (CDRC), University of Ulsan College of Medicine, Seoul, South Korea
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21
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Lillico R, Stesco N, Khorshid Amhad T, Cortes C, Namaka MP, Lakowski TM. Inhibitors of enzymes catalyzing modifications to histone lysine residues: structure, function and activity. Future Med Chem 2016; 8:879-97. [PMID: 27173004 DOI: 10.4155/fmc-2016-0021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Gene expression is partly controlled by epigenetic mechanisms including histone-modifying enzymes. Some diseases are caused by changes in gene expression that can be mitigated by inhibiting histone-modifying enzymes. This review covers the enzyme inhibitors targeting histone lysine modifications. We summarize the enzymatic mechanisms of histone lysine acetylation, deacetylation, methylation and demethylation and discuss the biochemical roles of these modifications in gene expression and in disease. We discuss inhibitors of lysine acetylation, deacetylation, methylation and demethylation defining their structure-activity relationships and their potential mechanisms. We show that there are potentially indiscriminant off-target effects on gene expression even with the use of selective epigenetic enzyme inhibitors.
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Affiliation(s)
- Ryan Lillico
- Faculty of Health Sciences, College of Pharmacy, University of Manitoba, Winnipeg, Manitoba, Canada
- Pharmaceutical Analysis Laboratory, College of Pharmacy, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Nicholas Stesco
- Faculty of Health Sciences, College of Pharmacy, University of Manitoba, Winnipeg, Manitoba, Canada
- Pharmaceutical Analysis Laboratory, College of Pharmacy, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Tina Khorshid Amhad
- Faculty of Health Sciences, College of Pharmacy, University of Manitoba, Winnipeg, Manitoba, Canada
- Joint Laboratory of Biological Psychiatry Between Shantou University Medical College and College of Medicine, University of Manitoba, Winnipeg, MB, Canada
- Department of Human Anatomy and Cell Science, College of Medicine, University of Manitoba, Winnipeg, MB, Canada
- Department of Rehabilitation Medicine, Health Sciences Centre (HSC), Winnipeg, MB, Canada
| | - Claudia Cortes
- Joint Laboratory of Biological Psychiatry Between Shantou University Medical College and College of Medicine, University of Manitoba, Winnipeg, MB, Canada
- Department of Human Anatomy and Cell Science, College of Medicine, University of Manitoba, Winnipeg, MB, Canada
- Department of Rehabilitation Medicine, Health Sciences Centre (HSC), Winnipeg, MB, Canada
| | - Mike P Namaka
- Faculty of Health Sciences, College of Pharmacy, University of Manitoba, Winnipeg, Manitoba, Canada
- Joint Laboratory of Biological Psychiatry Between Shantou University Medical College and College of Medicine, University of Manitoba, Winnipeg, MB, Canada
- Department of Human Anatomy and Cell Science, College of Medicine, University of Manitoba, Winnipeg, MB, Canada
- Department of Rehabilitation Medicine, Health Sciences Centre (HSC), Winnipeg, MB, Canada
| | - Ted M Lakowski
- Faculty of Health Sciences, College of Pharmacy, University of Manitoba, Winnipeg, Manitoba, Canada
- Pharmaceutical Analysis Laboratory, College of Pharmacy, University of Manitoba, Winnipeg, Manitoba, Canada
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22
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Choi HK, Choi Y, Park ES, Park SY, Lee SH, Seo J, Jeong MH, Jeong JW, Jeong JH, Lee PCW, Choi KC, Yoon HG. Programmed cell death 5 mediates HDAC3 decay to promote genotoxic stress response. Nat Commun 2015; 6:7390. [PMID: 26077467 PMCID: PMC4490383 DOI: 10.1038/ncomms8390] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 05/04/2015] [Indexed: 01/09/2023] Open
Abstract
The inhibition of p53 activity by histone deacetylase 3 (HDAC3) has been reported, but the precise molecular mechanism is unknown. Here we show that programmed cell death 5 (PDCD5) selectively mediates HDAC3 dissociation from p53, which induces HDAC3 cleavage and ubiquitin-dependent proteasomal degradation. Casein kinase 2 alpha phosphorylates PDCD5 at Ser-119 to enhance its stability and importin 13-mediated nuclear translocation of PDCD5. Genetic deletion of PDCD5 abrogates etoposide (ET)-induced p53 stabilization and HDAC3 cleavage, indicating an essential role of PDCD5 in p53 activation. Restoration of PDCD5WT in PDCD5−/− MEFs restores ET-induced HDAC3 cleavage. Reduction of both PDCD5 and p53, but not reduction of either protein alone, significantly enhances in vivo tumorigenicity of AGS gastric cancer cells and correlates with poor prognosis in gastric cancer patients. Our results define a mechanism for p53 activation via PDCD5-dependent HDAC3 decay under genotoxic stress conditions. The tumour suppressor p53 is known to be inhibited by histone deacetylase 3 but the molecular mechanism is poorly understood. Here Choi et al. show regulation by programmed cell death 5 and an essential role in activating p53 following DNA damage.
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Affiliation(s)
- Hyo-Kyoung Choi
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul 120-752, Korea
| | - Youngsok Choi
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 436-400, Korea
| | - Eun Sung Park
- Medical Convergence Research Institute, Yonsei University College of Medicine, Seoul 120-752, Korea
| | - Soo-Yeon Park
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul 120-752, Korea
| | - Seung-Hyun Lee
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul 120-752, Korea
| | - Jaesung Seo
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul 120-752, Korea
| | - Mi-Hyeon Jeong
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul 120-752, Korea
| | - Jae-Wook Jeong
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University College of Human Medicine, Lansing, Michigan 49503, USA
| | - Jae-Ho Jeong
- Department of Surgery, Yonsei University College of Medicine, Seoul 120-752, Korea
| | - Peter C W Lee
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul 138-736, Korea
| | - Kyung-Chul Choi
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul 138-736, Korea
| | - Ho-Geun Yoon
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul 120-752, Korea
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23
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Petersen TS, Kristensen SG, Jeppesen JV, Grøndahl ML, Wissing ML, Macklon KT, Andersen CY. Distribution and function of 3',5'-Cyclic-AMP phosphodiesterases in the human ovary. Mol Cell Endocrinol 2015; 403:10-20. [PMID: 25578602 DOI: 10.1016/j.mce.2015.01.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 01/03/2015] [Accepted: 01/05/2015] [Indexed: 12/29/2022]
Abstract
The concentration of the important second messenger cAMP is regulated by phosphodiesterases (PDEs) and hence an attractive drug target. However, limited human data are available about the PDEs in the ovary. The aim of the present study was to describe and characterise the PDEs in the human ovary. Results were obtained by analysis of mRNA microarray data from follicles and granulosa cells (GCs), combined RT-PCR and enzymatic activity analysis in GCs, immunohistochemical analysis of ovarian sections and by studying the effect of PDE inhibitors on progesterone production from cultured GCs. We found that PDE3, PDE4, PDE7 and PDE8 are the major families present while PDE11A was not detected. PDE8B was differentially expressed during folliculogenesis. In cultured GCs, inhibition of PDE7 and PDE8 increased basal progesterone secretion while PDE4 inhibition increased forskolin-stimulated progesterone secretion. In conclusion, we identified PDE3, PDE4, PDE7 and PDE8 as the major PDEs in the human ovary.
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Affiliation(s)
- T S Petersen
- Laboratory of Reproductive Biology, The Juliane Marie Centre for Women, Children, and Reproduction - Copenhagen University Hospital, Copenhagen University, Copenhagen 2100, Denmark; Medical Department, LEO Pharma, Ballerup 2750, Denmark.
| | - S G Kristensen
- Laboratory of Reproductive Biology, The Juliane Marie Centre for Women, Children, and Reproduction - Copenhagen University Hospital, Copenhagen University, Copenhagen 2100, Denmark
| | - J V Jeppesen
- Laboratory of Reproductive Biology, The Juliane Marie Centre for Women, Children, and Reproduction - Copenhagen University Hospital, Copenhagen University, Copenhagen 2100, Denmark
| | - M L Grøndahl
- The Fertility Clinic, Herlev Hospital, Copenhagen University Hospital, Copenhagen University, Herlev 2730, Denmark
| | - M L Wissing
- The Fertility Clinic, Holbæk Sygehus, Holbæk 4300, Denmark
| | - K T Macklon
- The Fertility Clinic, The Juliane Marie Centre for Women, Children, and Reproduction - Copenhagen University Hospital, Copenhagen University, Copenhagen 2100, Denmark
| | - C Y Andersen
- Laboratory of Reproductive Biology, The Juliane Marie Centre for Women, Children, and Reproduction - Copenhagen University Hospital, Copenhagen University, Copenhagen 2100, Denmark
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Park D, Park H, Kim Y, Kim H, Jeoung D. HDAC3 acts as a negative regulator of angiogenesis. BMB Rep 2015; 47:227-32. [PMID: 24286308 PMCID: PMC4163891 DOI: 10.5483/bmbrep.2014.47.4.128] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 07/06/2013] [Accepted: 08/07/2014] [Indexed: 12/31/2022] Open
Abstract
Histone deacetylase-3 (HDAC3) is involved in cellular proliferation, apoptosis and transcriptional repression. However, the role of HDAC3 in angiogenesis remains unknown. HDAC3 negatively regulated the expression of angiogenic factors, such as VEGF and plasminogen activator inhibitor-1 (PAI-1). HDAC3 showed binding to promoter sequences of PAI-1. HDAC3 activity was necessary for the expression regulation of PAI-1 by HDAC3. VEGF decreased the expression of HDAC3, and the down-regulation of HDAC3 enhanced endothelial cell tube formation. HDAC3 negatively regulated tumor-induced angiogenic potential. We show the novel role of HDAC3 as a negative regulator of angiogenesis. [BMB Reports 2014; 47(4): 227-232]
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Affiliation(s)
- Deokbum Park
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon 200-701, Korea
| | - Hyunmi Park
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon 200-701, Korea
| | - Youngmi Kim
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon 200-701, Korea
| | - Hyuna Kim
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon 200-701, Korea
| | - Dooil Jeoung
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon 200-701, Korea
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Regulation of T-cell activation and migration by the kinase TBK1 during neuroinflammation. Nat Commun 2015; 6:6074. [PMID: 25606824 PMCID: PMC4302769 DOI: 10.1038/ncomms7074] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 12/09/2014] [Indexed: 12/17/2022] Open
Abstract
Development of an immune or autoimmune response involves T-cell activation in lymphoid organs and subsequent migration to peripheral tissues. Here we show that T-cell-specific ablation of the kinase TBK1 promotes T-cell activation but causes retention of effector T cells in the draining lymph node in a neuroinflammatory autoimmunity model, experimental autoimmune encephalomyelitis (EAE). At older ages, the T-cell-conditional TBK1-knockout mice also spontaneously accumulate T cells with activated phenotype. TBK1 controls the activation of AKT and its downstream kinase mTORC1 by a mechanism involving TBK1-stimulated AKT ubiquitination and degradation. The deregulated AKT-mTORC1 signalling in turn contributes to enhanced T-cell activation and impaired effector T-cell egress from draining lymph nodes. Treatment of mice with a small-molecule inhibitor of TBK1 inhibits EAE induction. These results suggest a role for TBK1 in regulating T-cell migration and establish TBK1 as a regulator of the AKT-mTORC1 signalling axis. T cells that are activated by self-antigens in the periphery can migrate into the brain causing neuroinflammatory disease. Here the authors show that TBK1 is necessary for activated T-cell egress from the lymph node, and blocking TBK1 ameliorates autoimmunity in a mouse model of multiple sclerosis.
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KhorshidAhmad T, Acosta C, Cortes C, Lakowski TM, Gangadaran S, Namaka M. Transcriptional Regulation of Brain-Derived Neurotrophic Factor (BDNF) by Methyl CpG Binding Protein 2 (MeCP2): a Novel Mechanism for Re-Myelination and/or Myelin Repair Involved in the Treatment of Multiple Sclerosis (MS). Mol Neurobiol 2015; 53:1092-1107. [PMID: 25579386 DOI: 10.1007/s12035-014-9074-1] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 12/29/2014] [Indexed: 12/13/2022]
Abstract
Multiple sclerosis (MS) is a chronic progressive, neurological disease characterized by the targeted immune system-mediated destruction of central nervous system (CNS) myelin. Autoreactive CD4+ T helper cells have a key role in orchestrating MS-induced myelin damage. Once activated, circulating Th1-cells secrete a variety of inflammatory cytokines that foster the breakdown of blood-brain barrier (BBB) eventually infiltrating into the CNS. Inside the CNS, they become reactivated upon exposure to the myelin structural proteins and continue to produce inflammatory cytokines such as tumor necrosis factor α (TNFα) that leads to direct activation of antibodies and macrophages that are involved in the phagocytosis of myelin. Proliferating oligodendrocyte precursors (OPs) migrating to the lesion sites are capable of acute remyelination but unable to completely repair or restore the immune system-mediated myelin damage. This results in various permanent clinical neurological disabilities such as cognitive dysfunction, fatigue, bowel/bladder abnormalities, and neuropathic pain. At present, there is no cure for MS. Recent remyelination and/or myelin repair strategies have focused on the role of the neurotrophin brain-derived neurotrophic factor (BDNF) and its upstream transcriptional repressor methyl CpG binding protein (MeCP2). Research in the field of epigenetic therapeutics involving histone deacetylase (HDAC) inhibitors and lysine acetyl transferase (KAT) inhibitors is being explored to repress the detrimental effects of MeCP2. This review will address the role of MeCP2 and BDNF in remyelination and/or myelin repair and the potential of HDAC and KAT inhibitors as novel therapeutic interventions for MS.
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Affiliation(s)
- Tina KhorshidAhmad
- College of Pharmacy, University of Manitoba, 750 McDermot Avenue, Winnipeg, R3E 0T5, Manitoba, Canada.,Manitoba Multiple Sclerosis Research Network Organization (MMSRNO), Winnipeg, Canada
| | - Crystal Acosta
- College of Pharmacy, University of Manitoba, 750 McDermot Avenue, Winnipeg, R3E 0T5, Manitoba, Canada.,Manitoba Multiple Sclerosis Research Network Organization (MMSRNO), Winnipeg, Canada
| | - Claudia Cortes
- College of Pharmacy, University of Manitoba, 750 McDermot Avenue, Winnipeg, R3E 0T5, Manitoba, Canada.,Manitoba Multiple Sclerosis Research Network Organization (MMSRNO), Winnipeg, Canada
| | - Ted M Lakowski
- College of Pharmacy, University of Manitoba, 750 McDermot Avenue, Winnipeg, R3E 0T5, Manitoba, Canada.,Manitoba Multiple Sclerosis Research Network Organization (MMSRNO), Winnipeg, Canada
| | - Surendiran Gangadaran
- College of Pharmacy, University of Manitoba, 750 McDermot Avenue, Winnipeg, R3E 0T5, Manitoba, Canada.,Manitoba Multiple Sclerosis Research Network Organization (MMSRNO), Winnipeg, Canada
| | - Michael Namaka
- College of Pharmacy, University of Manitoba, 750 McDermot Avenue, Winnipeg, R3E 0T5, Manitoba, Canada. .,Manitoba Multiple Sclerosis Research Network Organization (MMSRNO), Winnipeg, Canada. .,College of Medicine, University of Manitoba, Winnipeg, Canada. .,School of Medical Rehabilitation, College of Medicine, University of Manitoba, Winnipeg, Canada.
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Choi HK, Choi Y, Kang H, Lim EJ, Park SY, Lee HS, Park JM, Moon J, Kim YJ, Choi I, Joe EH, Choi KC, Yoon HG. PINK1 positively regulates HDAC3 to suppress dopaminergic neuronal cell death. Hum Mol Genet 2014; 24:1127-41. [PMID: 25305081 DOI: 10.1093/hmg/ddu526] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Deciphering the molecular basis of neuronal cell death is a central issue in the etiology of neurodegenerative diseases, such as Parkinson's and Alzheimer's. Dysregulation of p53 levels has been implicated in neuronal apoptosis. The role of histone deacetylase 3 (HDAC3) in suppressing p53-dependent apoptosis has been recently emphasized; however, the molecular basis of modulation of p53 function by HDAC3 remains unclear. Here we show that PTEN-induced putative kinase 1 (PINK1), which is linked to autosomal recessive early-onset familial Parkinson's disease, phosphorylates HDAC3 at Ser-424 to enhance its HDAC activity in a neural cell-specific manner. PINK1 prevents H2O2-induced C-terminal cleavage of HDAC3 via phosphorylation of HDAC3 at Ser-424, which is reversed by protein phosphatase 4c. PINK1-mediated phosphorylation of HDAC3 enhances its direct association with p53 and causes subsequent hypoacetylation of p53. Genetic deletion of PINK1 partly impaired the suppressive role of HDAC3 in regulating p53 acetylation and transcriptional activity. However, depletion of HDAC3 fully abolished the PINK1-mediated p53 inhibitory loop. Finally, ectopic expression of phosphomometic-HDAC3(S424E) substantially overcomes the defective action of PINK1 against oxidative stress in dopaminergic neuronal cells. Together, our results uncovered a mechanism by which PINK1-HDAC3 network mediates p53 inhibitory loop in response to oxidative stress-induced damage.
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Affiliation(s)
- Hyo-Kyoung Choi
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, South Korea
| | - Youngsok Choi
- Fertility Center of CHA General Hospital, CHA Research Institute and
| | - HeeBum Kang
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, South Korea
| | - Eun-Jin Lim
- Applied Bioscience, College of Life Science, CHA University, Seoul 135-081, South Korea
| | - Soo-Yeon Park
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, South Korea
| | - Hyun-Seob Lee
- Applied Bioscience, College of Life Science, CHA University, Seoul 135-081, South Korea
| | - Ji-Min Park
- Applied Bioscience, College of Life Science, CHA University, Seoul 135-081, South Korea
| | - Jisook Moon
- Applied Bioscience, College of Life Science, CHA University, Seoul 135-081, South Korea
| | - Yoon-Jung Kim
- ILSONG Institute of Life Science, Hallym University, Rm 607, ILSONG Bldg, 1605-4 Gwanyang-dong, Dongan-gu, Anyang, Gyonggi-do 431-060, South Korea
| | - Insup Choi
- Department of Biomedical Sciences, Neuroscience Graduate Program, Ajou University School of Medicine, Suwon 443-380, South Korea and
| | - Eun-Hye Joe
- Department of Biomedical Sciences, Neuroscience Graduate Program, Ajou University School of Medicine, Suwon 443-380, South Korea and
| | - Kyung-Chul Choi
- Department of Medicine, Graduate School, University of Ulsan College of Medicine, 388-1 Poongnap-dong, Songpa-gu, Seoul 138-736, South Korea
| | - Ho-Geun Yoon
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, South Korea,
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Tan J, McKenzie C, Potamitis M, Thorburn AN, Mackay CR, Macia L. The role of short-chain fatty acids in health and disease. Adv Immunol 2014; 121:91-119. [PMID: 24388214 DOI: 10.1016/b978-0-12-800100-4.00003-9] [Citation(s) in RCA: 1376] [Impact Index Per Article: 137.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
There is now an abundance of evidence to show that short-chain fatty acids (SCFAs) play an important role in the maintenance of health and the development of disease. SCFAs are a subset of fatty acids that are produced by the gut microbiota during the fermentation of partially and nondigestible polysaccharides. The highest levels of SCFAs are found in the proximal colon, where they are used locally by enterocytes or transported across the gut epithelium into the bloodstream. Two major SCFA signaling mechanisms have been identified, inhibition of histone deacetylases (HDACs) and activation of G-protein-coupled receptors (GPCRs). Since HDACs regulate gene expression, inhibition of HDACs has a vast array of downstream consequences. Our understanding of SCFA-mediated inhibition of HDACs is still in its infancy. GPCRs, particularly GPR43, GPR41, and GPR109A, have been identified as receptors for SCFAs. Studies have implicated a major role for these GPCRs in the regulation of metabolism, inflammation, and disease. SCFAs have been shown to alter chemotaxis and phagocytosis; induce reactive oxygen species (ROS); change cell proliferation and function; have anti-inflammatory, antitumorigenic, and antimicrobial effects; and alter gut integrity. These findings highlight the role of SCFAs as a major player in maintenance of gut and immune homeostasis. Given the vast effects of SCFAs, and that their levels are regulated by diet, they provide a new basis to explain the increased prevalence of inflammatory disease in Westernized countries, as highlighted in this chapter.
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Affiliation(s)
- Jian Tan
- Department of Immunology, Monash University, Clayton, Victoria, Australia
| | - Craig McKenzie
- Department of Immunology, Monash University, Clayton, Victoria, Australia
| | - Maria Potamitis
- Department of Immunology, Monash University, Clayton, Victoria, Australia
| | - Alison N Thorburn
- Department of Immunology, Monash University, Clayton, Victoria, Australia
| | - Charles R Mackay
- Department of Immunology, Monash University, Clayton, Victoria, Australia.
| | - Laurence Macia
- Department of Immunology, Monash University, Clayton, Victoria, Australia.
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Chikina MD, Sealfon SC. Increasing consistency of disease biomarker prediction across datasets. PLoS One 2014; 9:e91272. [PMID: 24740471 PMCID: PMC3989170 DOI: 10.1371/journal.pone.0091272] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 02/10/2014] [Indexed: 11/18/2022] Open
Abstract
Microarray studies with human subjects often have limited sample sizes which hampers the ability to detect reliable biomarkers associated with disease and motivates the need to aggregate data across studies. However, human gene expression measurements may be influenced by many non-random factors such as genetics, sample preparations, and tissue heterogeneity. These factors can contribute to a lack of agreement among related studies, limiting the utility of their aggregation. We show that it is feasible to carry out an automatic correction of individual datasets to reduce the effect of such ‘latent variables’ (without prior knowledge of the variables) in such a way that datasets addressing the same condition show better agreement once each is corrected. We build our approach on the method of surrogate variable analysis but we demonstrate that the original algorithm is unsuitable for the analysis of human tissue samples that are mixtures of different cell types. We propose a modification to SVA that is crucial to obtaining the improvement in agreement that we observe. We develop our method on a compendium of multiple sclerosis data and verify it on an independent compendium of Parkinson's disease datasets. In both cases, we show that our method is able to improve agreement across varying study designs, platforms, and tissues. This approach has the potential for wide applicability to any field where lack of inter-study agreement has been a concern.
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Affiliation(s)
- Maria D. Chikina
- Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
| | - Stuart C. Sealfon
- Department of Neurology, Center for Translational Systems Biology and Department of Neurology, Mount Sinai School of Medicine, New York, New York, United States of America
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Tegla CA, Azimzadeh P, Andrian-Albescu M, Martin A, Cudrici CD, Trippe R, Sugarman A, Chen H, Boodhoo D, Vlaicu SI, Royal W, Bever C, Rus V, Rus H. SIRT1 is decreased during relapses in patients with multiple sclerosis. Exp Mol Pathol 2014; 96:139-48. [DOI: 10.1016/j.yexmp.2013.12.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 12/27/2013] [Indexed: 11/25/2022]
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Zhang F, Tossberg JT, Spurlock CF, Yao SY, Aune TM, Sriram S. Expression of IL-33 and its epigenetic regulation in Multiple Sclerosis. Ann Clin Transl Neurol 2014; 1:307-318. [PMID: 25215310 PMCID: PMC4157667 DOI: 10.1002/acn3.47] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Objective We examined the expression of IL-33 as an indicator of an innate immune response in relapsing remitting MS (RRMS) and controls. We proposed a link between the expression of IL-33 and IL-33 regulated genes to histone deacetylase (HDAC) activity and in particular HDAC3, an enzyme that plays a role in the epigenetic regulation of a number genes including those which regulate inflammation. Methods Using TaqMan low density arrays, flow cytometry and ELIZA, expression of IL-33, and family of innate immune response genes which regulate cytokine gene expression was examined in RRMS patients and controls. Results Intracellular expression of IL-33 and IL-33 regulated genes are increased in patients with RRMS. In addition, following in vitro culture with TLR agonist lipopolysaccharide (LPS), there is increased induction of both IL-33 and HDAC3 in RRMS patients over that seen in controls. Also, culture of PBMC with IL-33 led to the expression of genes which overlapped with that seen in RRMS patients suggesting that the gene expression signature seen in RRMS is likely to be driven by IL-33 mediated innate immune pathways. Expression of levels of IL-33 but not IL-1 (another gene regulated by TLR agonists) is completely inhibited by Trichostatin A (TSA) establishing a closer regulation of IL-33 but not IL-1 with HDAC. Interpretation These results demonstrate the over expression of innate immune genes in RRMS and offer a causal link between the epigenetic regulation by HDAC and the induction of IL-33.
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Affiliation(s)
- Fanglin Zhang
- Departments of Medicine, Pathology Microbiology-Immunology and Neurology, Vanderbilt University, Nashville, TN 37212
| | - John T Tossberg
- Departments of Medicine, Pathology Microbiology-Immunology and Neurology, Vanderbilt University, Nashville, TN 37212
| | - Charles F Spurlock
- Departments of Medicine, Pathology Microbiology-Immunology and Neurology, Vanderbilt University, Nashville, TN 37212
| | - Song-Yi Yao
- Departments of Medicine, Pathology Microbiology-Immunology and Neurology, Vanderbilt University, Nashville, TN 37212
| | - Thomas M Aune
- Departments of Medicine, Pathology Microbiology-Immunology and Neurology, Vanderbilt University, Nashville, TN 37212
| | - Subramaniam Sriram
- Departments of Medicine, Pathology Microbiology-Immunology and Neurology, Vanderbilt University, Nashville, TN 37212
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Abdelkarim H, Brunsteiner M, Neelarapu R, Bai H, Madriaga A, van Breemen RB, Blond SY, Gaponenko V, Petukhov PA. Photoreactive "nanorulers" detect a novel conformation of full length HDAC3-SMRT complex in solution. ACS Chem Biol 2013; 8:2538-49. [PMID: 24010878 DOI: 10.1021/cb400601g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Histone deacetylase 3 (HDAC3) is a promising epigenetic drug target for multiple therapeutic applications. Direct interaction between the Deacetylase Activating Domain of the silencing mediator for retinoid or thyroid-hormone receptors (SMRT-DAD) is required for activation of enzymatic activity of HDAC3. The structure of this complex and the nature of interactions with HDAC inhibitors in solution are unknown. Using novel photoreactive HDAC probes, "nanorulers", we determined the distance between the catalytic site of the full-length HDAC3 and SMRT-DAD in solution at physiologically relevant conditions and found it to be substantially different from that predicted by the X-ray model with a Δ379-428 aa truncated HDAC3. Further experiments indicated that in solution this distance might change in response to chemical stimuli, while the enzymatic activity remained unaffected. These observations were further validated by Saturation Transfer Difference (STD) NMR experiments. We propose that the observed changes in the distance are an important part of the histone code that remains to be explored. Mapping direct interactions and distances between macromolecules with such "nanorulers" as a function of cellular events facilitates better understanding of basic biology and ways for its manipulation in a cell- and tissue-specific manner.
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Affiliation(s)
- Hazem Abdelkarim
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612, United States
| | - Michael Brunsteiner
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612, United States
| | - Raghupathi Neelarapu
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612, United States
| | - He Bai
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612, United States
| | - Antonett Madriaga
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612, United States
| | - Richard B. van Breemen
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612, United States
| | | | | | - Pavel A. Petukhov
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612, United States
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Cao B, Li J, Zhu J, Shen M, Han K, Zhang Z, Yu Y, Wang Y, Wu D, Chen S, Sun A, Tang X, Zhao Y, Qiao C, Hou T, Mao X. The antiparasitic clioquinol induces apoptosis in leukemia and myeloma cells by inhibiting histone deacetylase activity. J Biol Chem 2013; 288:34181-34189. [PMID: 24114842 DOI: 10.1074/jbc.m113.472563] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The antiparasitic clioquinol (CQ) represents a class of novel anticancer drugs by interfering with proteasome activity. In the present study, we found that CQ induced blood cancer cell apoptosis by inhibiting histone deacetylases (HDACs). CQ accumulated the acetylation levels of several key proteins including histone H3 (H3), p53, HSP90, and α-tubulin. In the mechanistic study, CQ was found to down-regulate HDAC1, -3, -4, and -5 in both myeloma and leukemia cells. Computer modeling analysis revealed that CQ was well docked into the active pocket of the enzyme, where the oxygen and nitrogen atoms in CQ formed stable coordinate bonds with the zinc ion, and the hydroxyl group from CQ formed an effective hydrogen bond with Asp-267. Moreover, co-treatment with CQ and zinc/copper chloride led to decreased Ac-H3. Furthermore, CQ inhibited the activity of Class I and IIa HDACs in the cell-free assays, demonstrating that CQ interfered with HDAC activity. By inhibiting HDAC activity, CQ induced expression of p21, p27, and p53, cell cycle arrest at G1 phase, and cell apoptosis. This study suggested that the HDAC enzymes are targets of CQ, which provided a novel insight into the molecular mechanism of CQ in the treatment of hematological malignancies.
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Affiliation(s)
- Biyin Cao
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Jie Li
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Jingyu Zhu
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Mingyun Shen
- Institute of Functional Nano & Soft Materials, Soochow University, Suzhou, China 215123
| | - Kunkun Han
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Zubin Zhang
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Yang Yu
- Department of Pharmacology, Pharmacy School, Soochow University, Suzhou, China 215123
| | - Yali Wang
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Depei Wu
- Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Suzhou, China 215006
| | - Suning Chen
- Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Suzhou, China 215006
| | - Aining Sun
- Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Suzhou, China 215006
| | - Xiaowen Tang
- Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Suzhou, China 215006
| | - Yun Zhao
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Chunhua Qiao
- Department of Pharmacology, Pharmacy School, Soochow University, Suzhou, China 215123
| | - Tingjun Hou
- Institute of Functional Nano & Soft Materials, Soochow University, Suzhou, China 215123
| | - Xinliang Mao
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123; Department of Pharmacology, Pharmacy School, Soochow University, Suzhou, China 215123.
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Toussirot E, Abbas W, Khan KA, Tissot M, Jeudy A, Baud L, Bertolini E, Wendling D, Herbein G. Imbalance between HAT and HDAC activities in the PBMCs of patients with ankylosing spondylitis or rheumatoid arthritis and influence of HDAC inhibitors on TNF alpha production. PLoS One 2013; 8:e70939. [PMID: 24039666 PMCID: PMC3748901 DOI: 10.1371/journal.pone.0070939] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 06/24/2013] [Indexed: 11/18/2022] Open
Abstract
Objective Acetylation or deacetylation of histone proteins may modulate cytokine gene transcription such as TNF alpha (TNF). We evaluated the balance between histone deacetytlase (HDAC) and histone acetyltransferase (HAT) in patients with rheumatoid arthritis (RA) or ankylosing spondylitis (AS) compared to healthy controls (HC) and determined the influence of HDAC inhibitors (trichostatin A -TSA- or Sirtinol -Sirt-) on these enzymatic activities and on the PBMC production of TNF. Methods 52 patients with RA, 21 with AS and 38 HC were evaluated. HAT and HDAC activities were measured on nuclear extracts from PBMC using colorimetric assays. Enzymatic activities were determined prior to and after ex vivo treatment of PBMC by TSA or Sirt. TNF levels were evaluated in PBMC culture supernatants in the absence or presence of TSA or Sirt. Results HAT and HDAC activities were significantly reduced in AS, while these activities reached similar levels in RA and HC. Ex vivo treatment of PBMC by HDACi tended to decrease HDAC expression in HC, but Sirt significantly reduced HAT in RA. TNF production by PBMC was significantly down-regulated by Sirt in HC and AS patients. Conclusion HAT and HDAC were disturbed in AS while no major changes were found in RA. HDACi may modulate HDAC and HAT PBMC expression, especially Sirt in RA. Sirtinol was able to down regulate TNF production by PBMC in HC and AS. An imbalance between HAT and HDAC activities might provide the rationale for the development of HDACi in the therapeutic approach to inflammatory rheumatic diseases.
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Affiliation(s)
- Eric Toussirot
- Clinical Investigation Center Biotherapy CBT-506, University Hospital of Besançon, Besançon, France
- Department of Rheumatology, University Hospital of Besançon, Besançon, France
- Department of Therapeutics, University of Franche Comté, Besançon, France
- UPRES EA 4266, Pathogens and Inflammation Laboratory, SFR FED 4234, University of Franche Comté, Besançon, France
- * E-mail :
| | - Wasim Abbas
- UPRES EA 4266, Pathogens and Inflammation Laboratory, SFR FED 4234, University of Franche Comté, Besançon, France
- Department of Virology, University Hospital of Besançon, Besançon, France
| | - Kashif Aziz Khan
- UPRES EA 4266, Pathogens and Inflammation Laboratory, SFR FED 4234, University of Franche Comté, Besançon, France
- Department of Virology, University Hospital of Besançon, Besançon, France
| | - Marion Tissot
- Department of Virology, University Hospital of Besançon, Besançon, France
| | - Alicia Jeudy
- Department of Virology, University Hospital of Besançon, Besançon, France
| | - Lucile Baud
- Department of Virology, University Hospital of Besançon, Besançon, France
| | - Ewa Bertolini
- Department of Rheumatology, University Hospital of Besançon, Besançon, France
| | - Daniel Wendling
- Department of Rheumatology, University Hospital of Besançon, Besançon, France
- UPRES EA 4266, Pathogens and Inflammation Laboratory, SFR FED 4234, University of Franche Comté, Besançon, France
| | - Georges Herbein
- UPRES EA 4266, Pathogens and Inflammation Laboratory, SFR FED 4234, University of Franche Comté, Besançon, France
- Department of Virology, University Hospital of Besançon, Besançon, France
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de Conti A, Tryndyak V, Koturbash I, Heidor R, Kuroiwa-Trzmielina J, Ong TP, Beland FA, Moreno FS, Pogribny IP. The chemopreventive activity of the butyric acid prodrug tributyrin in experimental rat hepatocarcinogenesis is associated with p53 acetylation and activation of the p53 apoptotic signaling pathway. Carcinogenesis 2013; 34:1900-6. [PMID: 23568954 DOI: 10.1093/carcin/bgt124] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The reversibility of non-genotoxic phenotypic alterations has been explored in order to develop novel preventive and therapeutic approaches for cancer control. Previously, it has been demonstrated that histone deacetylase (HDAC) inhibitor tributyrin, a butyric acid prodrug, to have chemopreventive effects on rat hepatocarcinogenesis. The goal of this study was to determine molecular mechanisms associated with the chemopreventive activity of tributyrin. Male Wistar rats were allocated randomly to untreated control group and two experimental groups. Rats in the experimental group 1 were treated with maltodextrin (3g/kg body wt), and rats in experimental group 2 were treated with tributyrin (2g/kg body wt) daily for 8 weeks. Two weeks after treatment initiation, rats from experimental groups were subjected to a 'resistant hepatocyte' model of hepatocarcinogenesis. Treatment with tributyrin resulted in lower HDAC activity and Hdac3 and Hdac4 gene expression, and an increase of histone H3 lysine 9 and 18 and histone H4 lysine 16 acetylation as compared with the experimental group 1. In addition to the increase in histone acetylation, tributyrin caused an increase in the acetylation of the nuclear p53 protein. These changes were accompanied by a normalization of the p53-signaling network, particularly by the upregulation of pro-apoptotic genes, and a consequent increase of apoptosis and autophagy in the livers of tributyrin-treated rats. These results indicate that the chemopreventive activity of tributyrin may be related to an increase of histone and p53 acetylation, which could lead to the induction of the p53 apoptotic pathway.
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Affiliation(s)
- Aline de Conti
- Department of Food and Experimental Nutrition, Laboratory of Diet, Nutrition and Cancer, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
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McGee-Lawrence ME, Bradley EW, Dudakovic A, Carlson SW, Ryan ZC, Kumar R, Dadsetan M, Yaszemski MJ, Chen Q, An KN, Westendorf JJ. Histone deacetylase 3 is required for maintenance of bone mass during aging. Bone 2013; 52:296-307. [PMID: 23085085 PMCID: PMC3513670 DOI: 10.1016/j.bone.2012.10.015] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 10/09/2012] [Accepted: 10/10/2012] [Indexed: 01/26/2023]
Abstract
Histone deacetylase 3 (Hdac3) is a nuclear enzyme that removes acetyl groups from lysine residues in histones and other proteins to epigenetically regulate gene expression. Hdac3 interacts with bone-related transcription factors and co-factors such as Runx2 and Zfp521, and thus is poised to play a key role in the skeletal system. To understand the role of Hdac3 in osteoblasts and osteocytes, Hdac3 conditional knockout (CKO) mice were created with the osteocalcin (OCN) promoter driving Cre expression. Hdac3 CKO(OCN) mice were of normal size and weight, but progressively lost trabecular and cortical bone mass with age. The Hdac3 CKO(OCN) mice exhibited reduced cortical bone mineralization and material properties and suffered frequent fractures. Bone resorption was lower, not higher, in the Hdac3 CKO(OCN) mice, suggesting that primary defects in osteoblasts caused the reduced bone mass. Indeed, reductions in bone formation were observed. Osteoblasts and osteocytes from Hdac3 CKO(OCN) mice showed increased DNA damage and reduced functional activity in vivo and in vitro. Thus, Hdac3 expression in osteoblasts and osteocytes is essential for bone maintenance during aging.
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Affiliation(s)
| | - Elizabeth W. Bradley
- Department of Orthopedic Surgery/Orthopedic Research, Mayo Clinic, Rochester, MN USA
| | - Amel Dudakovic
- Department of Orthopedic Surgery/Orthopedic Research, Mayo Clinic, Rochester, MN USA
| | - Samuel W. Carlson
- Department of Orthopedic Surgery/Orthopedic Research, Mayo Clinic, Rochester, MN USA
| | - Zachary C. Ryan
- Department of Nephrology and Hypertension, Mayo Clinic, Rochester, MN USA
| | - Rajiv Kumar
- Department of Nephrology and Hypertension, Mayo Clinic, Rochester, MN USA
| | - Mahrokh Dadsetan
- Department of Orthopedic Surgery/Orthopedic Research, Mayo Clinic, Rochester, MN USA
| | - Michael J. Yaszemski
- Department of Orthopedic Surgery/Orthopedic Research, Mayo Clinic, Rochester, MN USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN USA
| | - Qingshan Chen
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN USA
| | - Kai-Nan An
- Department of Orthopedic Surgery/Orthopedic Research, Mayo Clinic, Rochester, MN USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN USA
| | - Jennifer J. Westendorf
- Department of Orthopedic Surgery/Orthopedic Research, Mayo Clinic, Rochester, MN USA
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN USA
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Wang G, Jiang X, Pu H, Zhang W, An C, Hu X, Liou AKF, Leak RK, Gao Y, Chen J. Scriptaid, a novel histone deacetylase inhibitor, protects against traumatic brain injury via modulation of PTEN and AKT pathway : scriptaid protects against TBI via AKT. Neurotherapeutics 2013; 10:124-42. [PMID: 23132328 PMCID: PMC3557358 DOI: 10.1007/s13311-012-0157-2] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Traumatic brain injury (TBI) is a leading cause of motor and cognitive deficits in young adults for which there is no effective therapy. The present study characterizes the protective effect of a new histone deacetylase inhibitor, Scriptaid (Sigma-Aldrich Corporation, St. Louis, MO), against injury from controlled cortical impact (CCI). Scriptaid elicited a dose-dependent decrease in lesion size at 1.5 to 5.5 mg/kg and a concomitant attenuation in motor and cognitive deficits when delivered 30 minutes postinjury in a model of moderate TBI. Comparable protection was achieved even when treatment was delayed to 12 h postinjury. Furthermore, the protection of motor and cognitive functions was long lasting, as similar improvements were detected 35 days postinjury. The efficacy of Scriptaid (Sigma-Aldrich Corporation) was manifested as an increase in surviving neurons, as well as the number/length of their processes within the CA3 region of the hippocampus and the pericontusional cortex. Consistent with other histone deacetylase inhibitors, Scriptaid treatment prevented the decrease in phospho-AKT (p-AKT) and phosphorylated phosphatase and tensin homolog deleted on chromosome 10 (p-PTEN) induced by TBI in cortical and CA3 hippocampal neurons. Notably, the p-AKT inhibitor LY294002 attenuated the impact of Scriptaid, providing mechanistic evidence that Scriptaid functions partly by modulating the prosurvival AKT signaling pathway. As Scriptaid offers long-lasting neuronal and behavioral protection, even when delivered 12 h after controlled cortical impact, it is an excellent new candidate for the effective clinical treatment of TBI.
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Affiliation(s)
- Guohua Wang
- />State Key Laboratory of Medical Neurobiology and Institute of Brain Science, Fudan University, Shanghai, 200032 China
- />Center of Cerebrovascular Disease Research, University of Pittsburgh, Pittsburgh, PA 15213 USA
- />Department of Neuropharmacology, Institute of Nautical Medicine, Nantong University, Nantong, Jiangsu 226001 China
| | - Xiaoyan Jiang
- />State Key Laboratory of Medical Neurobiology and Institute of Brain Science, Fudan University, Shanghai, 200032 China
| | - Hongjian Pu
- />State Key Laboratory of Medical Neurobiology and Institute of Brain Science, Fudan University, Shanghai, 200032 China
| | - Wenting Zhang
- />State Key Laboratory of Medical Neurobiology and Institute of Brain Science, Fudan University, Shanghai, 200032 China
| | - Chengrui An
- />State Key Laboratory of Medical Neurobiology and Institute of Brain Science, Fudan University, Shanghai, 200032 China
| | - Xiaoming Hu
- />Center of Cerebrovascular Disease Research, University of Pittsburgh, Pittsburgh, PA 15213 USA
- />Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA 15240 USA
| | - Anthony Kian-Fong Liou
- />Center of Cerebrovascular Disease Research, University of Pittsburgh, Pittsburgh, PA 15213 USA
- />Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA 15240 USA
| | - Rehana K. Leak
- />Division of Pharmaceutical Sciences, Mylan School of Pharmacy, Duquesne University, Pittsburgh, PA 15282 USA
| | - Yanqin Gao
- />State Key Laboratory of Medical Neurobiology and Institute of Brain Science, Fudan University, Shanghai, 200032 China
- />Center of Cerebrovascular Disease Research, University of Pittsburgh, Pittsburgh, PA 15213 USA
- />Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213 USA
| | - Jun Chen
- />State Key Laboratory of Medical Neurobiology and Institute of Brain Science, Fudan University, Shanghai, 200032 China
- />Center of Cerebrovascular Disease Research, University of Pittsburgh, Pittsburgh, PA 15213 USA
- />Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA 15240 USA
- />Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213 USA
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Sládek M, Polidarová L, Nováková M, Parkanová D, Sumová A. Early chronotype and tissue-specific alterations of circadian clock function in spontaneously hypertensive rats. PLoS One 2012; 7:e46951. [PMID: 23056539 PMCID: PMC3462770 DOI: 10.1371/journal.pone.0046951] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Accepted: 09/07/2012] [Indexed: 12/31/2022] Open
Abstract
Malfunction of the circadian timing system may result in cardiovascular and metabolic diseases, and conversely, these diseases can impair the circadian system. The aim of this study was to reveal whether the functional state of the circadian system of spontaneously hypertensive rats (SHR) differs from that of control Wistar rat. This study is the first to analyze the function of the circadian system of SHR in its complexity, i.e., of the central clock in the suprachiasmatic nuclei (SCN) as well as of the peripheral clocks. The functional properties of the SCN clock were estimated by behavioral output rhythm in locomotor activity and daily profiles of clock gene expression in the SCN determined by in situ hybridization. The function of the peripheral clocks was assessed by daily profiles of clock gene expression in the liver and colon by RT-PCR and in vitro using real time recording of Bmal1-dLuc reporter. The potential impact of the SHR phenotype on circadian control of the metabolic pathways was estimated by daily profiles of metabolism-relevant gene expression in the liver and colon. The results revealed that SHR exhibited an early chronotype, because the central SCN clock was phase advanced relative to light/dark cycle and the SCN driven output rhythm ran faster compared to Wistar rats. Moreover, the output rhythm was dampened. The SHR peripheral clock reacted to the dampened SCN output with tissue-specific consequences. In the colon of SHR the clock function was severely altered, whereas the differences are only marginal in the liver. These changes may likely result in a mutual desynchrony of circadian oscillators within the circadian system of SHR, thereby potentially contributing to metabolic pathology of the strain. The SHR may thus serve as a valuable model of human circadian disorders originating in poor synchrony of the circadian system with external light/dark regime.
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Affiliation(s)
- Martin Sládek
- Department of Neurohumoral Regulations, Institute of Physiology Academy of Sciences of the Czech Republic v.v.i., Prague, Czech Republic
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Aberrant expression of the apoptosis-related proteins BAK and MCL1 in T cells in multiple sclerosis. J Neuroimmunol 2012; 244:51-6. [PMID: 22257632 DOI: 10.1016/j.jneuroim.2011.12.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2011] [Revised: 12/19/2011] [Accepted: 12/19/2011] [Indexed: 12/22/2022]
Abstract
Pathogenic T cells of multiple sclerosis (MS) patients have been suggested to be endowed with an increased resistance to apoptosis, contributing to their increased survival. We report herein increased levels of the anti-apoptotic MCL1 protein and its half-life in activated lymphocytes of MS patients, which were not associated with differences in MCL1 RNA levels or with alterations in the expression levels of the known E3 ligases of MCL1-β-TrCP and HUWE1. Concomitantly, the expression levels of the pro-apoptotic protein BAK were decreased in MS patients at relapse. These findings suggest the dysregulation of the apoptosis-related proteins MCL1 and BAK in MS.
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Abstract
Clinical and experimental studies show that inhibition of histone/protein deacetylases (HDAC) can have important anti-neoplastic effects through cytotoxic and proapoptotic mechanisms. There are also increasing data from nononcologic settings that HDAC inhibitors (HDACi) can exhibit useful anti-inflammatory effects in vitro and in vivo, unrelated to cytotoxicity or apoptosis. These effects can be cell-, tissue-, or context-dependent and can involve modulation of specific inflammatory signaling pathways as well as epigenetic mechanisms. We review recent advances in the understanding of how HDACi alter immune and inflammatory processes, with a particular focus on the effects of HDACi on T-cell biology, including the activation and functions of conventional T cells and the unique T-cell subset, composed of Foxp3(+) T-regulatory cells. Although studies are still needed to tease out details of the various biologic roles of individual HDAC isoforms and their corresponding selective inhibitors, the anti-inflammatory effects of HDACi are already promising and may lead to new therapeutic avenues in transplantation and autoimmune diseases.
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Abstract
Apoptosis is a natural process where cells that are no longer required can be eliminated in a highly regulated, controlled manner. Apoptosis is important in maintaining the mammalian immune system and plays a significant role in immune response, positive and negative T cell selection, and cytotoxic death of target cells. When the apoptotic pathways are impaired or are not tightly regulated, autoimmune diseases, inflammatory diseases, viral and bacterial infections and cancers ensue. An imbalance in the anti-apoptotic and pro-apoptotic factors has been implicated in these diseases. Moreover, current therapies directed towards these diseases focus on the modulation of the apoptotic death pathways to regulate the immune response. In this review, we will focus on the process of T cell activation and apoptosis in autoimmune reactions, in response to tumor progression as well as in response to bacterial and viral infections.
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Affiliation(s)
- Anuradha K Murali
- Departments of Surgery, Medical University of South Carolina, Charleston, SC 29425
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