1
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Zhou H, Gelernter J. Human genetics and epigenetics of alcohol use disorder. J Clin Invest 2024; 134:e172885. [PMID: 39145449 PMCID: PMC11324314 DOI: 10.1172/jci172885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2024] Open
Abstract
Alcohol use disorder (AUD) is a prominent contributor to global morbidity and mortality. Its complex etiology involves genetics, epigenetics, and environmental factors. We review progress in understanding the genetics and epigenetics of AUD, summarizing the key findings. Advancements in technology over the decades have elevated research from early candidate gene studies to present-day genome-wide scans, unveiling numerous genetic and epigenetic risk factors for AUD. The latest GWAS on more than one million participants identified more than 100 genetic variants, and the largest epigenome-wide association studies (EWAS) in blood and brain samples have revealed tissue-specific epigenetic changes. Downstream analyses revealed enriched pathways, genetic correlations with other traits, transcriptome-wide association in brain tissues, and drug-gene interactions for AUD. We also discuss limitations and future directions, including increasing the power of GWAS and EWAS studies as well as expanding the diversity of populations included in these analyses. Larger samples, novel technologies, and analytic approaches are essential; these include whole-genome sequencing, multiomics, single-cell sequencing, spatial transcriptomics, deep-learning prediction of variant function, and integrated methods for disease risk prediction.
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Affiliation(s)
- Hang Zhou
- Department of Psychiatry, Yale School of Medicine, New Haven, Connecticut, USA
- Veterans Affairs Connecticut Healthcare System, West Haven, Connecticut, USA
- Department of Biomedical Informatics and Data Science
- Center for Brain and Mind Health
| | - Joel Gelernter
- Department of Psychiatry, Yale School of Medicine, New Haven, Connecticut, USA
- Veterans Affairs Connecticut Healthcare System, West Haven, Connecticut, USA
- Department of Genetics, and
- Department of Neuroscience, Yale School of Medicine, New Haven, Connecticut, USA
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2
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Asefi MB, Heidari A, Hajikarim-Hamedani A, Mousavi Z, Ashabi G, Sadat-Shirazi MS, Zarrindast MR. Preconception ethanol exposure changes anxiety, depressive and checking-like behavior and alter the expression levels of MAO-B in male offspring. Neurotoxicol Teratol 2024; 104:107367. [PMID: 38866258 DOI: 10.1016/j.ntt.2024.107367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 05/18/2024] [Accepted: 06/08/2024] [Indexed: 06/14/2024]
Abstract
Alcohol use, which alters the epigenome, increases the probability that it could affect subsequent generations, even if they were never directly exposed to ethanol or even in utero. We explored the effects of parental ethanol exposure before conception on behavioral changes in the offspring. Considering the role of Monoamine oxidase-B (MAO-B) in dopamine turnover in the prefrontal cortex (PFC) and its influence on behavior, and taking into account that ethanol exposure could alter MAO-B, we assessed the protein levels in the offspring. Male and female rats were exposed to ethanol for 30 days and then allowed ten days of abstinence. Afterward, they were mated with either control or ethanol-exposed rats. The F1 and F2 male offspring underwent tests to assess behavioral changes. Additionally, the levels of MAO-B in the PFC were evaluated. Results revealed that in the F1, anxiety increased only in the bi-parental ethanol-exposed male offspring in the elevated plus maze test (p < 0.05), while depressive-like behavior rose only in maternal and bi-parental ethanol-exposed offspring (p < 0.01). However, compulsive-like behavior increased in all ethanol-exposed offspring (p < 0.01). No significant phenotypic changes were observed in the F2. The levels of MAO-B in the PFC increased in the maternal (p < 0.05) and bi-parental ethanol-exposed offspring (p < 0.01). Our study demonstrates that parental ethanol exposure, even in the days preceding mating, adversely affects behaviors and induces molecular changes in the brain. Given these findings, it becomes imperative to monitor children exposed to parental (especially maternal) ethanol for the prevention of mental disorders.
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Affiliation(s)
- Mohammad Basir Asefi
- Faculty of Pharmacy and Pharmaceutical Sciences, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran.
| | - Amirhossein Heidari
- Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | | | - Zahra Mousavi
- Department of Pharmacology-Toxicology, Faculty of Pharmacy and Pharmaceutical Sciences, Tehran Medical Sciences, Islamic Azad University, Iran
| | - Ghorbangol Ashabi
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Mohammad-Reza Zarrindast
- Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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3
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Muenstermann C, Clemens KJ. Epigenetic mechanisms of nicotine dependence. Neurosci Biobehav Rev 2024; 156:105505. [PMID: 38070842 DOI: 10.1016/j.neubiorev.2023.105505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/09/2023] [Accepted: 12/04/2023] [Indexed: 12/18/2023]
Abstract
Smoking continues to be a leading cause of preventable disease and death worldwide. Nicotine dependence generates a lifelong propensity towards cravings and relapse, presenting an ongoing challenge for the development of treatments. Accumulating evidence supports a role for epigenetics in the development and maintenance of addiction to many drugs of abuse, however, the involvement of epigenetics in nicotine dependence is less clear. Here we review evidence that nicotine interacts with epigenetic mechanisms to enable the maintenance of nicotine-seeking across time. Research across species suggests that nicotine increases permissive histone acetylation, decreases repressive histone methylation, and modulates levels of DNA methylation and noncoding RNA expression throughout the brain. These changes are linked to the promoter regions of genes critical for learning and memory, reward processing and addiction. Pharmacological manipulation of enzymes that catalyze core epigenetic modifications regulate nicotine reward and associative learning, demonstrating a functional role of epigenetic modifications in nicotine dependence. These findings are consistent with nicotine promoting an overall permissive chromatin state at genes important for learning, memory and reward. By exploring these links through next-generation sequencing technologies, epigenetics provides a promising avenue for future interventions to treat nicotine dependence.
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Affiliation(s)
| | - Kelly J Clemens
- School of Psychology, University of New South Wales, Sydney, Australia.
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4
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Araujo I, Henriksen A, Gamsby J, Gulick D. Impact of Alcohol Abuse on Susceptibility to Rare Neurodegenerative Diseases. Front Mol Biosci 2021; 8:643273. [PMID: 34179073 PMCID: PMC8220155 DOI: 10.3389/fmolb.2021.643273] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 01/14/2021] [Indexed: 12/22/2022] Open
Abstract
Despite the prevalence and well-recognized adverse effects of prenatal alcohol exposure and alcohol use disorder in the causation of numerous diseases, their potential roles in the etiology of neurodegenerative diseases remain poorly characterized. This is especially true of the rare neurodegenerative diseases, for which small population sizes make it difficult to conduct broad studies of specific etiological factors. Nonetheless, alcohol has potent and long-lasting effects on neurodegenerative substrates, at both the cellular and systems levels. This review highlights the general effects of alcohol in the brain that contribute to neurodegeneration across diseases, and then focuses on specific diseases in which alcohol exposure is likely to play a major role. These specific diseases include dementias (alcohol-induced, frontotemporal, and Korsakoff syndrome), ataxias (cerebellar and frontal), and Niemann-Pick disease (primarily a Type B variant and Type C). We conclude that there is ample evidence to support a role of alcohol abuse in the etiology of these diseases, but more work is needed to identify the primary mechanisms of alcohol's effects.
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Affiliation(s)
- Iskra Araujo
- Gulick Laboratory, Byrd Neuroscience Institute, University of South Florida Health, Tampa, FL, United States
| | - Amy Henriksen
- Gulick Laboratory, Byrd Neuroscience Institute, University of South Florida Health, Tampa, FL, United States
| | - Joshua Gamsby
- Gulick Laboratory, Byrd Neuroscience Institute, University of South Florida Health, Tampa, FL, United States
- Department of Molecular Medicine, Morsani College of Medicine, University of South FL, Tampa, FL, United States
| | - Danielle Gulick
- Gulick Laboratory, Byrd Neuroscience Institute, University of South Florida Health, Tampa, FL, United States
- Department of Molecular Medicine, Morsani College of Medicine, University of South FL, Tampa, FL, United States
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5
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Riga D, Schmitz LJ, Mourik Y, Hoogendijk WJ, De Vries TJ, Smit AB, Spijker S. Stress vulnerability promotes an alcohol-prone phenotype in a preclinical model of sustained depression. Addict Biol 2020; 25:e12701. [PMID: 30561063 PMCID: PMC6916303 DOI: 10.1111/adb.12701] [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: 06/28/2018] [Revised: 10/28/2018] [Accepted: 11/05/2018] [Indexed: 12/15/2022]
Abstract
Major depression and alcohol‐related disorders frequently co‐occur. Depression severity weighs on the magnitude and persistence of comorbid alcohol use disorder (AUD), with severe implications for disease prognosis. Here, we investigated whether depression vulnerability drives propensity to AUD at the preclinical level. We used the social defeat–induced persistent stress (SDPS) model of chronic depression in combination with operant alcohol self‐administration (SA). Male Wistar rats were subjected to social defeat (five episodes) and prolonged social isolation (~12 weeks) and subsequently classified as SDPS‐prone or SDPS‐resilient based on their affective and cognitive performance. Using an operant alcohol SA paradigm, acquisition, motivation, extinction, and cue‐induced reinstatement of alcohol seeking were examined in the two subpopulations. SDPS‐prone animals showed increased alcohol SA, heightened motivation to acquire alcohol, persistent alcohol seeking despite alcohol unavailability, signs of extinction resistance, and increased cue‐induced relapse; the latter could be blocked by the α2 adrenoreceptor agonist guanfacine. In SDPS‐resilient rats, prior exposure to social defeat increased alcohol SA without affecting any other measures of alcohol seeking and alcohol taking. Our data revealed that depression proneness confers vulnerability to alcohol, emulating patterns of alcohol dependence seen in human addicts, and that depression resilience to a large extent protects from the development of AUD‐like phenotypes. Furthermore, our data suggest that stress exposure alone, independently of depressive symptoms, alters alcohol intake in the long‐term.
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Affiliation(s)
- Danai Riga
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Amsterdam NeuroscienceVrije Universiteit Amsterdam The Netherlands
| | - Leanne J.M. Schmitz
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Amsterdam NeuroscienceVrije Universiteit Amsterdam The Netherlands
| | - Yvar Mourik
- Department of Anatomy and Neurosciences, Amsterdam NeuroscienceVrije Universiteit Medical Center Amsterdam The Netherlands
| | | | - Taco J. De Vries
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Amsterdam NeuroscienceVrije Universiteit Amsterdam The Netherlands
- Department of Anatomy and Neurosciences, Amsterdam NeuroscienceVrije Universiteit Medical Center Amsterdam The Netherlands
| | - August B. Smit
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Amsterdam NeuroscienceVrije Universiteit Amsterdam The Netherlands
| | - Sabine Spijker
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Amsterdam NeuroscienceVrije Universiteit Amsterdam The Netherlands
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Koller G, Zill P, Soyka M, Adorjan K, Weiss C, Kern A, Nguyen-Thien ML, Kamp F, Proebstl L, Krause D, Ruhdorfer S, Bergmann W, Preuss UW. Short-term changes in global methylation and hydroxymethylation during alcohol detoxification. Eur Neuropsychopharmacol 2019; 29:897-903. [PMID: 31133368 DOI: 10.1016/j.euroneuro.2019.05.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 05/07/2019] [Accepted: 05/11/2019] [Indexed: 12/21/2022]
Abstract
Alcohol dependence is a common public health problem and epigenetics may offer new aspects in understanding the biological and genetic underpinnings and improve treatment of this complex disease. Supposedly, methylation and hydroxymethylation are altered in brain tissues and in synapse-related genes due to chronic alcohol intake and during withdrawal. To assess potential epigenetic changes after cessation of chronic alcohol intake, we compared 23 alcohol-dependent individuals during inpatient alcohol detoxification with 13 carefully matched controls. Blood samples were taken on the day of admission, after one and after two weeks at the end of inpatient treatment. Genome-wide global methylation and global DNA hydroxymethylation were compared across groups. There were significant differences in global methylation across time from admission to one and two weeks of inpatient withdrawal (p < 0.001). These findings were paralleled to changes in global DNA hydroxymethylation across time when age was employed as a cofactor (p < 0.001). Several potentially influencing variables like severity of withdrawal, dose of withdrawal medication and alcohol intake before admission did not yield significant influence on epigenetic changes. The results confirm previous findings of significant alterations of epigenetic patterns during alcohol intoxication and present for the first time hydroxymethylation changes in these individuals.
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Affiliation(s)
- Gabriele Koller
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Nussbaumstraße 7, D - 80336 Munich, Germany.
| | - Peter Zill
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Nussbaumstraße 7, D - 80336 Munich, Germany
| | - Michael Soyka
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Nussbaumstraße 7, D - 80336 Munich, Germany; Medical Park Chiemseeblick, Bernau am Chiemsee, Germany
| | - Kristina Adorjan
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Nussbaumstraße 7, D - 80336 Munich, Germany
| | - Claudia Weiss
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Nussbaumstraße 7, D - 80336 Munich, Germany
| | - Antonia Kern
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Nussbaumstraße 7, D - 80336 Munich, Germany
| | - Mai-Ly Nguyen-Thien
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Nussbaumstraße 7, D - 80336 Munich, Germany
| | - Felicia Kamp
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Nussbaumstraße 7, D - 80336 Munich, Germany
| | - Lisa Proebstl
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Nussbaumstraße 7, D - 80336 Munich, Germany
| | - Daniela Krause
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Nussbaumstraße 7, D - 80336 Munich, Germany
| | - Sarah Ruhdorfer
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Nussbaumstraße 7, D - 80336 Munich, Germany
| | - Wilhelm Bergmann
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Nussbaumstraße 7, D - 80336 Munich, Germany
| | - Ulrich W Preuss
- Martin Luther University Halle-Wittenberg, Halle (Saale), Germany; Vitos-Klinik Psychiatrie und Psychotherapie Herborn, Herborn, Germany
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Hubacek JA, Pikhart H, Peasey A, Malyutina S, Pajak A, Tamosiunas A, Voevoda M, Holmes MV, Bobak M. The association between the FTO gene variant and alcohol consumption and binge and problem drinking in different gene-environment background: The HAPIEE study. Gene 2019; 707:30-35. [PMID: 31055022 DOI: 10.1016/j.gene.2019.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 04/07/2019] [Accepted: 05/01/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND Alcohol intake and tobacco smoking have significant negative health consequences and both are influenced by genetic predispositions. Some studies suggest that the FTO gene is associated with alcohol consumption. We investigated whether a tagging variant (rs17817449) within the FTO gene is associated with alcohol intake, problem drinking and smoking behaviour. METHODS We analysed data from 26,792 Caucasian adults (47.2% of males; mean age 58.9 (±7.3) years), examined through the prospective cohort HAPIEE study. The primary outcomes were daily alcohol consumption, binge drinking, problem drinking (CAGE score 2+) and smoking status in relation to tagging variants within the FTO and ADH1B genes. RESULTS We found no significant association of the FTO polymorphism with smoking status in either sex. The associations of the FTO polymorphism with drinking pattern were inconsistent and differed by gender. In men, GG homozygote carriers had lower odds of problem drinking (OR 0.85, 95% CI 0.75-0.96, p = 0.03). In women, the combination of the FTO/ADH1B GG/+A genotypes doubled the risk of binge drinking (OR 2.10, 95% CI 1.19-3.71, p < 0.05), and the risk was further increased among smoking women (OR 4.10, 95% CI 1.64-10.24, p = 0.008). CONCLUSIONS In this large population study, the FTO gene appeared associated with binge and problem drinking, and the associations were modified by sex, smoking status and the ADH1B polymorphism.
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Affiliation(s)
- Jaroslav A Hubacek
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
| | - Hynek Pikhart
- International Institute for Health and Society, Department of Epidemiology and Public Health, University College London, UK
| | - Anne Peasey
- International Institute for Health and Society, Department of Epidemiology and Public Health, University College London, UK
| | - Sofia Malyutina
- Research Institute of Internal and Preventive Medicine, Branch of the Institute of Cytology and Genetics, SB RAS, Novosibirsk, Russia
| | - Andrzej Pajak
- Department of Epidemiology and Population Studies, Institute of Public Health, Faculty of Health Care, Jagiellonian University Medical College, Krakow, Poland
| | - Abdonas Tamosiunas
- Department of Population Studies, Institute of Cardiology of Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Mikhail Voevoda
- Research Institute of Internal and Preventive Medicine, Branch of the Institute of Cytology and Genetics, SB RAS, Novosibirsk, Russia
| | - Michael V Holmes
- National Institute for Health Research Oxford Biomedical Research Centre, Oxford University Hospital, Oxford, England, UK
| | - Martin Bobak
- International Institute for Health and Society, Department of Epidemiology and Public Health, University College London, UK
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Clark SL, Costin BN, Chan RF, Johnson AW, Xie L, Jurmain JL, Kumar G, Shabalin AA, Pandey AK, Aberg KA, Miles MF, van den Oord E. A Whole Methylome Study of Ethanol Exposure in Brain and Blood: An Exploration of the Utility of Peripheral Blood as Proxy Tissue for Brain in Alcohol Methylation Studies. Alcohol Clin Exp Res 2018; 42:2360-2368. [PMID: 30320886 DOI: 10.1111/acer.13905] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 10/06/2018] [Indexed: 01/04/2023]
Abstract
BACKGROUND Recent reviews have highlighted the potential use of blood-based methylation biomarkers as diagnostic and prognostic tools of current and future alcohol use and addiction. Due to the substantial overlap that often exists between methylation patterns across different tissues, including blood and brain, blood-based methylation may track methylation changes in brain; however, little work has explored the overlap in alcohol-related methylation in these tissues. METHODS To study the effects of alcohol on the brain methylome and identify possible biomarkers of these changes in blood, we performed a methylome-wide association study in brain and blood from 40 male DBA/2J mice that received either an acute ethanol (EtOH) or saline intraperitoneal injection. To investigate all 22 million CpGs in the mouse genome, we enriched for the methylated genomic fraction using methyl-CpG binding domain (MBD) protein capture followed by next-generation sequencing (MBD-seq). We performed association tests in blood and brain separately followed by enrichment testing to determine whether there was overlapping alcohol-related methylation in the 2 tissues. RESULTS The top result for brain was a CpG located in an intron of Ttc39b (p = 5.65 × 10-08 ), and for blood, the top result was located in Espnl (p = 5.11 × 10-08 ). Analyses implicated pathways involved in inflammation and neuronal differentiation, such as CXCR4, IL-7, and Wnt signaling. Enrichment tests indicated significant overlap among the top results in brain and blood. Pathway analyses of the overlapping genes converge on MAPKinase signaling (p = 5.6 × 10-05 ) which plays a central role in acute and chronic responses to alcohol and glutamate receptor pathways, which can regulate neuroplastic changes underlying addictive behavior. CONCLUSIONS Overall, we have shown some methylation changes in brain and blood after acute EtOH administration and that the changes in blood partly mirror the changes in brain suggesting the potential for DNA methylation in blood to be biomarkers of alcohol use.
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Affiliation(s)
- Shaunna L Clark
- Department of Psychology , Michigan State University, East Lansing, Michigan.,Center for Biomarker Research and Precision Medicine , Virginia Commonwealth University, Richmond, Virginia
| | - Blair N Costin
- Department of Pharmacology and Toxicology , Virginia Commonwealth University, Richmond, Virginia
| | - Robin F Chan
- Center for Biomarker Research and Precision Medicine , Virginia Commonwealth University, Richmond, Virginia
| | - Alexander W Johnson
- Department of Psychology , Michigan State University, East Lansing, Michigan
| | - Linying Xie
- Center for Biomarker Research and Precision Medicine , Virginia Commonwealth University, Richmond, Virginia
| | - Jessica L Jurmain
- Department of Pharmacology and Toxicology , Virginia Commonwealth University, Richmond, Virginia
| | - Gaurav Kumar
- Center for Biomarker Research and Precision Medicine , Virginia Commonwealth University, Richmond, Virginia
| | - Andrey A Shabalin
- Center for Biomarker Research and Precision Medicine , Virginia Commonwealth University, Richmond, Virginia
| | - Ashutosh K Pandey
- Department of Anatomy and Neurobiology , Center for Integrative and Translational Genomics, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Karolina A Aberg
- Center for Biomarker Research and Precision Medicine , Virginia Commonwealth University, Richmond, Virginia
| | - Michael F Miles
- Department of Pharmacology and Toxicology , Virginia Commonwealth University, Richmond, Virginia
| | - Edwin van den Oord
- Center for Biomarker Research and Precision Medicine , Virginia Commonwealth University, Richmond, Virginia
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Kriss CL, Gregory-Lott E, Storey AJ, Tackett AJ, Wahls WP, Stevens SM. In Vivo Metabolic Tracing Demonstrates the Site-Specific Contribution of Hepatic Ethanol Metabolism to Histone Acetylation. Alcohol Clin Exp Res 2018; 42:1909-1923. [PMID: 30030934 PMCID: PMC6208134 DOI: 10.1111/acer.13843] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 07/17/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Epigenetic dysregulation through ethanol (EtOH)-induced changes in DNA methylation and histone modifications has been implicated in several alcohol-related disorders such as alcoholic liver disease. EtOH metabolism in the liver results in the formation of acetate, a metabolite that can be converted to acetyl-CoA, which can then be used by histone acetyltransferases to acetylate lysine residues. EtOH metabolism in the liver can also indirectly influence lysine acetylation through NAD+ -dependent sirtuin activity that is altered due to increases in NADH. As a proof-of-concept study to determine the direct influence of hepatic EtOH metabolism on histone acetylation changes, we used heavy-labeled EtOH (13 C2 ) and mass spectrometry (MS) to site specifically characterize lysine acetylation on histone proteins. METHODS Eight-week-old male C57BL/6J mice were gavaged using a bolus dose of either 13 C2 -labeled EtOH (5 g/kg) or maltose dextrin. Blood and livers were collected at 0, 4, and 24 hours followed by histone protein enrichment and derivatization using acid extraction and propionylation, respectively. Metabolic tracing and relative quantitation of acetylated histone proteins were performed using a hybrid quadrupole-orbitrap mass spectrometer. Data were analyzed using MaxQuant, Xcalibur Qual Browser, and the Bioconductor package "mzR." The contribution of EtOH to histone acetylation was quantified using the change in relative abundance of stable isotope incorporation in acetylated peptides detected by MS. RESULTS Data show significant incorporation of the EtOH-derived 13 C2 -label into N-terminal lysine acetylation sites on histones H3 and H4 after 4 hours, with rapid turnover of labeled histone acetylation sites and return to endogenous levels at 24 hours postgavage. Moreover, site-specific selectivity was observed in regard to label incorporation into certain lysine acetylation sites as determined by tandem mass spectrometry and comparison to isotope simulations. CONCLUSIONS These data provide the first quantitative evidence of how hepatic EtOH metabolism directly influences histone lysine acetylation in a site-specific manner and may influence EtOH-induced gene expression through these transcriptionally activating chromatin marks.
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Affiliation(s)
- Crystina L. Kriss
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, 4202 E. Fowler Ave., Tampa, Florida, 33620, USA
| | - Emily Gregory-Lott
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, 4202 E. Fowler Ave., Tampa, Florida, 33620, USA
| | - Aaron J. Storey
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, 4301 West Markham Street (slot 516), Little Rock, Arkansas, 72205
| | - Alan J. Tackett
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, 4301 West Markham Street (slot 516), Little Rock, Arkansas, 72205
| | - Wayne P. Wahls
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, 4301 West Markham Street (slot 516), Little Rock, Arkansas, 72205
| | - Stanley M. Stevens
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, 4202 E. Fowler Ave., Tampa, Florida, 33620, USA
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Mahna D, Puri S, Sharma S. DNA methylation signatures: Biomarkers of drug and alcohol abuse. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2018; 777:19-28. [DOI: 10.1016/j.mrrev.2018.06.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 05/22/2018] [Accepted: 06/18/2018] [Indexed: 01/08/2023]
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11
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A DNA methylation biomarker of alcohol consumption. Mol Psychiatry 2018; 23:422-433. [PMID: 27843151 PMCID: PMC5575985 DOI: 10.1038/mp.2016.192] [Citation(s) in RCA: 233] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 09/05/2016] [Accepted: 09/14/2016] [Indexed: 12/11/2022]
Abstract
The lack of reliable measures of alcohol intake is a major obstacle to the diagnosis and treatment of alcohol-related diseases. Epigenetic modifications such as DNA methylation may provide novel biomarkers of alcohol use. To examine this possibility, we performed an epigenome-wide association study of methylation of cytosine-phosphate-guanine dinucleotide (CpG) sites in relation to alcohol intake in 13 population-based cohorts (ntotal=13 317; 54% women; mean age across cohorts 42-76 years) using whole blood (9643 European and 2423 African ancestries) or monocyte-derived DNA (588 European, 263 African and 400 Hispanic ancestry) samples. We performed meta-analysis and variable selection in whole-blood samples of people of European ancestry (n=6926) and identified 144 CpGs that provided substantial discrimination (area under the curve=0.90-0.99) for current heavy alcohol intake (⩾42 g per day in men and ⩾28 g per day in women) in four replication cohorts. The ancestry-stratified meta-analysis in whole blood identified 328 (9643 European ancestry samples) and 165 (2423 African ancestry samples) alcohol-related CpGs at Bonferroni-adjusted P<1 × 10-7. Analysis of the monocyte-derived DNA (n=1251) identified 62 alcohol-related CpGs at P<1 × 10-7. In whole-blood samples of people of European ancestry, we detected differential methylation in two neurotransmitter receptor genes, the γ-Aminobutyric acid-A receptor delta and γ-aminobutyric acid B receptor subunit 1; their differential methylation was associated with expression levels of a number of genes involved in immune function. In conclusion, we have identified a robust alcohol-related DNA methylation signature and shown the potential utility of DNA methylation as a clinically useful diagnostic test to detect current heavy alcohol consumption.
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Pinzón-Cortés JA, Perna-Chaux A, Rojas-Villamizar NS, Díaz-Basabe A, Polanía-Villanueva DC, Jácome MF, Mendivil CO, Groot H, López-Segura V. Effect of diabetes status and hyperglycemia on global DNA methylation and hydroxymethylation. Endocr Connect 2017; 6:708-725. [PMID: 28993426 PMCID: PMC5670276 DOI: 10.1530/ec-17-0199] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 09/28/2017] [Indexed: 12/25/2022]
Abstract
Type 2 diabetes mellitus (T2DM) is characterized by oxidative stress that could lead to chronic micro- and macrovascular complications. We hypothesized that some of the target organ damage is mediated by oxidative alterations in epigenetic mechanisms involving DNA methylation (5mC) and DNA hydroxymethylation (5hmC). We analyzed global DNA methylation and hydroxymethylation in peripheral blood cells in well-controlled and poorly controlled patients with T2DM and compared them with healthy controls. We also analyzed microarrays of DNA methylation and gene expression of other important tissues in the context of diabetes from the GEO database repository and then compared these results with our experimental gene expression data. DNA methylation and, more importantly, DNA hydroxymethylation levels were increased in poorly controlled patients compared to well-controlled and healthy individuals. Both 5mC and 5hmC measurements were correlated with the percentage of glycated hemoglobin, indicating a direct impact of hyperglycemia on changes over the epigenome. The analysis of methylation microarrays was concordant, and 5mC levels were increased in the peripheral blood of T2DM patients. However, the DNA methylation levels were the opposite of those in other tissues, such as the pancreas, adipose tissue and skeletal muscle. We hypothesize that a process of DNA oxidation associated with hyperglycemia may explain the DNA demethylation in which the activity of ten-eleven translocation (TET) proteins is not sufficient to complete the process. High levels of glucose lead to cellular oxidation, which triggers the process of DNA demethylation aided by TET enzymes, resulting in epigenetic dysregulation of the damaged tissues.
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Affiliation(s)
- Jairo Arturo Pinzón-Cortés
- Biological Sciences DepartmentLaboratory of Human Genetics, Universidad de los Andes, Bogotá, Colombia
- School of MedicineUniversidad de los Andes, Bogotá, Colombia
| | - Angelina Perna-Chaux
- Biological Sciences DepartmentLaboratory of Human Genetics, Universidad de los Andes, Bogotá, Colombia
| | | | - Angélica Díaz-Basabe
- Biological Sciences DepartmentLaboratory of Human Genetics, Universidad de los Andes, Bogotá, Colombia
| | | | - María Fernanda Jácome
- Biological Sciences DepartmentLaboratory of Human Genetics, Universidad de los Andes, Bogotá, Colombia
| | - Carlos Olimpo Mendivil
- School of MedicineUniversidad de los Andes, Bogotá, Colombia
- Endocrinology SectionHospital Universitario Fundación Santa Fe de Bogotá, Bogotá, Colombia
| | - Helena Groot
- Biological Sciences DepartmentLaboratory of Human Genetics, Universidad de los Andes, Bogotá, Colombia
- School of MedicineUniversidad de los Andes, Bogotá, Colombia
| | - Valeriano López-Segura
- Biological Sciences DepartmentLaboratory of Human Genetics, Universidad de los Andes, Bogotá, Colombia
- School of MedicineUniversidad de los Andes, Bogotá, Colombia
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13
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Chastain LG, Sarkar DK. Alcohol effects on the epigenome in the germline: Role in the inheritance of alcohol-related pathology. Alcohol 2017; 60:53-66. [PMID: 28431793 DOI: 10.1016/j.alcohol.2016.12.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 12/04/2016] [Accepted: 12/30/2016] [Indexed: 12/18/2022]
Abstract
Excessive alcohol exposure has severe health consequences, and clinical and animal studies have demonstrated that disruptions in the epigenome of somatic cells, such as those in brain, are an important factor in the development of alcohol-related pathologies, such as alcohol-use disorders (AUDs) and fetal alcohol spectrum disorders (FASDs). It is also well known that alcohol-related health problems are passed down across generations in human populations, but the complete mechanisms for this phenomenon are currently unknown. Recent studies in animal models have suggested that epigenetic factors are also responsible for the transmission of alcohol-related pathologies across generations. Alcohol exposure has been shown to induce changes in the epigenome of sperm of exposed male animals, and these epimutations are inherited in the offspring. This paper reviews evidence for multigenerational and transgenerational epigenetic inheritance of alcohol-related pathology through the germline. We also review the literature on the epigenetic effects of alcohol exposure on somatic cells in brain, and its contribution to AUDs and FASDs. We note gaps in knowledge in this field, such as the lack of clinical studies in human populations and the lack of data on epigenetic inheritance via the female germline, and we suggest future research directions.
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Affiliation(s)
- Lucy G Chastain
- The Endocrine Program, Department of Animal Sciences, Rutgers, The State University of New Jersey, 67 Poultry Lane, New Brunswick, NJ 08901, USA
| | - Dipak K Sarkar
- The Endocrine Program, Department of Animal Sciences, Rutgers, The State University of New Jersey, 67 Poultry Lane, New Brunswick, NJ 08901, USA.
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14
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Kamat PK, Mallonee CJ, George AK, Tyagi SC, Tyagi N. Homocysteine, Alcoholism, and Its Potential Epigenetic Mechanism. Alcohol Clin Exp Res 2016; 40:2474-2481. [PMID: 27805256 PMCID: PMC5133158 DOI: 10.1111/acer.13234] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Accepted: 09/08/2016] [Indexed: 12/20/2022]
Abstract
Alcohol is the most socially accepted addictive drug. Alcohol consumption is associated with some health problems such as neurological, cognitive, behavioral deficits, cancer, heart, and liver disease. Mechanisms of alcohol-induced toxicity are presently not yet clear. One of the mechanisms underlying alcohol toxicity has to do with its interaction with amino acid homocysteine (Hcy), which has been linked with brain neurotoxicity. Elevated Hcy impairs with various physiological mechanisms in the body, especially metabolic pathways. Hcy metabolism is predominantly controlled by epigenetic regulation such as DNA methylation, histone modifications, and acetylation. An alteration in these processes leads to epigenetic modification. Therefore, in this review, we summarize the role of Hcy metabolism abnormalities in alcohol-induced toxicity with epigenetic adaptation and their influences on cerebrovascular pathology.
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Affiliation(s)
- Pradip K Kamat
- Department of Physiology, School of Medicine, University of Louisville, Louisville, Kentucky
- Department of Anesthesiology, Center for Translational Research in Neurodegenerative Disease, College of Medicine, University of Florida, Gainesville, Florida
| | - Carissa J Mallonee
- Department of Physiology, School of Medicine, University of Louisville, Louisville, Kentucky
| | - Akash K George
- Department of Physiology, School of Medicine, University of Louisville, Louisville, Kentucky
| | - Suresh C Tyagi
- Department of Physiology, School of Medicine, University of Louisville, Louisville, Kentucky
| | - Neetu Tyagi
- Department of Physiology, School of Medicine, University of Louisville, Louisville, Kentucky
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15
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Zhang H, Gelernter J. Review: DNA methylation and alcohol use disorders: Progress and challenges. Am J Addict 2016; 26:502-515. [PMID: 27759945 DOI: 10.1111/ajad.12465] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 09/17/2016] [Accepted: 10/02/2016] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Risk for alcohol use disorders (AUDs) is influenced by gene-environment interactions. Environmental factors can affect gene expression through epigenetic mechanisms such as DNA methylation. This review outlines the findings regarding the association of DNA methylation and AUDs. METHODS We searched PubMed (by April 2016) and identified 29 studies that examined the association of DNA methylation and AUDs. We also evaluated the methods used in these studies. RESULTS Two studies demonstrated elevated global (repetitive element) DNA methylation levels in AUD subjects. Fifteen candidate gene studies showed hypermethylation of promoter regions of six genes (AVP, DNMT3B, HERP, HTR3A, OPRM1, and SNCA) or hypomethylation of the GDAP1 promoter region in AUD subjects. Five genome-wide DNA methylation studies demonstrated widespread DNA methylation changes across the genome in AUD subjects. Six studies showed significant correlations of DNA methylation with gene expression in AUD subjects. Three studies revealed interactive effects of genetic variation and DNA methylation on susceptibility to AUDs. Most studies analyzed AUD-associated DNA methylation changes in the peripheral blood; a few studies examined DNA methylation changes in postmortem brains of AUD subjects. DISCUSSION AND CONCLUSIONS Chronic alcohol consumption may result in DNA methylation changes, leading to neuroadaptations that may underlie some of the mechanisms of AUD risk and persistence. Future studies are needed to confirm the few existing results, and then to elucidate whether DNA methylation changes are the cause or consequence of AUDs. SCIENTIFIC SIGNIFICANCE DNA methylation profiles may be used to assess AUD status or monitor AUD treatment response. (Am J Addict 2017;26:502-515).
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Affiliation(s)
- Huiping Zhang
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut.,VA Connecticut Healthcare System, West Haven, Connecticut
| | - Joel Gelernter
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut.,VA Connecticut Healthcare System, West Haven, Connecticut.,Department of Genetics, Yale University School of Medicine, New Haven, Connecticut.,Department of Neurobiology, Yale University School of Medicine, New Haven, Connecticut
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16
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Maisch B. Alkohol und Herz – eine unendliche Geschichte der Wechselbeziehung zur ältesten Droge der Welt. Herz 2016; 41:459-61. [DOI: 10.1007/s00059-016-4472-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Brückmann C, Di Santo A, Karle KN, Batra A, Nieratschker V. Validation of differential GDAP1 DNA methylation in alcohol dependence and its potential function as a biomarker for disease severity and therapy outcome. Epigenetics 2016; 11:456-63. [PMID: 27128683 DOI: 10.1080/15592294.2016.1179411] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Alcohol dependence is a severe disorder contributing substantially to the global burden of disease. Despite the detrimental consequences of chronic alcohol abuse and dependence, effective prevention strategies as well as treatment options are largely missing to date. Accumulating evidence suggests that gene-environment interactions, including epigenetic mechanisms, play a role in the etiology of alcohol dependence. A recent epigenome-wide study reported widespread alterations of DNA methylation patterns in alcohol dependent patients compared to control individuals. In the present study, we validate and replicate one of the top findings from this previous investigation in an independent cohort: the hypomethylation of GDAP1 in patients. To our knowledge, this is the first independent replication of an epigenome-wide finding in alcohol dependence. Furthermore, the AUDIT as well as the GSI score were negatively associated with GDAP1 methylation and we found a trend toward a negative association between GDAP1 methylation and the years of alcohol dependency, pointing toward a potential role of GDAP1 hypomethylation as biomarker for disease severity. In addition, we show that the hypomethylation of GDAP1 in patients reverses during a short-term alcohol treatment program, suggesting that GDAP1 DNA methylation could also serve as a potential biomarker for treatment outcome. Our data add to the growing body of knowledge on epigenetic effects in alcohol dependence and support GDAP1 as a novel candidate gene implicated in this disorder. As the role of GDAP1 in alcohol dependence is unknown, this novel candidate gene should be followed up in future studies.
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Affiliation(s)
- Christof Brückmann
- a Department of Psychiatry and Psychotherapy , University Hospital of Tuebingen , Tuebingen , Germany
| | - Adriana Di Santo
- a Department of Psychiatry and Psychotherapy , University Hospital of Tuebingen , Tuebingen , Germany
| | - Kathrin Nora Karle
- a Department of Psychiatry and Psychotherapy , University Hospital of Tuebingen , Tuebingen , Germany
| | - Anil Batra
- b Section for Addiction Medicine and Addiction Research, Department of Psychiatry and Psychotherapy, University Hospital of Tuebingen , Tuebingen , Germany
| | - Vanessa Nieratschker
- a Department of Psychiatry and Psychotherapy , University Hospital of Tuebingen , Tuebingen , Germany
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18
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Singh NN, Peer A, Nair S, Chaturvedi RK. Epigenetics: A possible answer to the undeciphered etiopathogenesis and behavior of oral lesions. J Oral Maxillofac Pathol 2016; 20:122-8. [PMID: 27194874 PMCID: PMC4860913 DOI: 10.4103/0973-029x.180967] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 03/10/2016] [Indexed: 01/07/2023] Open
Abstract
Much controversy has existed over the etiopathogenesis and management of oral lesions, especially oral malignancies. The knowledge of genetic basis is proving to be inadequate in the light of emerging new mechanisms termed epigenetic phenomena. The present review article aims to understand the role of epigenetic mechanisms in oral lesions. Epigenetics is the study of acquired changes in chromatin structure that arise independently of a change in the underlying deoxyribonucleic acid (DNA) nucleotide sequence. Key components involved in epigenetic regulation are DNA methylation, histone modifications and modifications in micro ribonucleic acids (miRNA). Epigenetics is a reversible system that can be affected by various environmental factors such as diet, drugs, mental stress, physical activity and addictive substances such as tobacco, nicotine and alcohol. Epigenetics may also play a role in explaining the etiopathogenesis of developmental anomalies, genetic defects, cancer as well as substance addiction (tobacco, cigarette and alcohol). Epigenetic modifications may contribute to aberrant epigenetic mechanisms seen in oral precancers and cancers. In the near future, epigenetic variations found in oral dysplastic cells can act as a molecular fingerprint for malignancies. The literature in English language was searched and a structured scientific review and meta-analysis of scientific publications from the year 2000 to year 2015 was carried out from various journals. It was observed that epigenetic marks can prove to be novel markers for early diagnosis, prognosis and treatment of oral cancers as well as other oral diseases.
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Affiliation(s)
- Narendra Nath Singh
- Department of Oral Pathology and Microbiology, Kothiwal Dental College and Research Center, Moradabad, Uttar Pradesh, India
| | - Aakanksha Peer
- Department of Oral Pathology and Microbiology, Kothiwal Dental College and Research Center, Moradabad, Uttar Pradesh, India
| | - Sherin Nair
- Department of Oral Pathology and Microbiology, Kothiwal Dental College and Research Center, Moradabad, Uttar Pradesh, India
| | - Rupesh K Chaturvedi
- Department of Oral Pathology and Microbiology, Kothiwal Dental College and Research Center, Moradabad, Uttar Pradesh, India
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Multigenerational and transgenerational inheritance of drug exposure: The effects of alcohol, opiates, cocaine, marijuana, and nicotine. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2015; 118:21-33. [PMID: 25839742 DOI: 10.1016/j.pbiomolbio.2015.03.002] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 03/02/2015] [Accepted: 03/06/2015] [Indexed: 12/15/2022]
Abstract
Familial inheritance of drug abuse is composed of both genetic and environmental factors. Additionally, epigenetic transgenerational inheritance may provide a means by which parental drug use can influence several generations of offspring. Recent evidence suggests that parental drug exposure produces behavioral, biochemical, and neuroanatomical changes in future generations. The focus of this review is to discuss these multigenerational and transgenerational phenotypes in the offspring of animals exposed to drugs of abuse. Specifically, changes found following the administration of alcohol, opioids, cocaine, marijuana, and nicotine will be discussed. In addition, epigenetic modifications to the genome following administration of these drugs will be detailed as well as their potential for transmission to the next generation.
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20
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Fry L, Baker BS, Powles AV, Engstrand L. Psoriasis is not an autoimmune disease? Exp Dermatol 2014; 24:241-4. [DOI: 10.1111/exd.12572] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2014] [Indexed: 12/19/2022]
Affiliation(s)
- Lionel Fry
- Department of Medicine; Imperial College; London UK
| | | | | | - Lars Engstrand
- Department of Life Sciences; Karolinska Institute; Solna Sweden
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21
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Disanza A, Steffen A, Hertzog M, Frittoli E, Rottner K, Scita G. Actin polymerization machinery: the finish line of signaling networks, the starting point of cellular movement. Cell Mol Life Sci 2005; 62:955-70. [PMID: 15868099 DOI: 10.1007/s00018-004-4472-6] [Citation(s) in RCA: 121] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Dynamic assembly of actin filaments generates the forces supporting cell motility. Several recent biochemical and genetic studies have revealed a plethora of different actin binding proteins whose coordinated activity regulates the turnover of actin filaments, thus controlling a variety of actin-based processes, including cell migration. Additionally, emerging evidence is highlighting a scenario whereby the same basic set of actin regulatory proteins is also the convergent node of different signaling pathways emanating from extracellular stimuli, like those from receptor tyrosine kinases. Here, we will focus on the molecular mechanisms of how the machinery of actin polymerization functions and is regulated, in a signaling-dependent mode, to generate site-directed actin assembly leading to cell motility.
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Affiliation(s)
- A Disanza
- IFOM, Istituto FIRC di Oncologia Molecolare, Via Adamello 16, 20134, Milan, Italy
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