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Alrfooh A, Casten LG, Richards JG, Wemmie JA, Magnotta VA, Fiedorowicz JG, Michaelson J, Williams AJ, Gaine ME. Investigating the relationship between DNA methylation, genetic variation, and suicide attempt in bipolar disorder. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.04.03.24305263. [PMID: 38633806 PMCID: PMC11023653 DOI: 10.1101/2024.04.03.24305263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Individuals with bipolar disorder are at increased risk for suicide, and this can be influenced by a range of biological, clinical, and environmental risk factors. Biological components associated with suicide include DNA modifications that lead to changes in gene expression. Common genetic variation and DNA methylation changes are some of the most frequent types of DNA findings associated with an increased risk for suicidal behavior. Importantly, the interplay between genetic predisposition and DNA methylation patterns is becoming more prevalent in genetic studies. We hypothesized that DNA methylation patterns in specific loci already genetically associated with suicide would be altered in individuals with bipolar disorder and a history of suicide attempt. To test this hypothesis, we searched the literature to identify common genetic variants (N=34) previously associated with suicidal thoughts and behaviors in individuals with bipolar disorder. We then created a customized sequencing panel that covered our chosen genomic loci. We profiled DNA methylation patterns from blood samples collected from bipolar disorder participants with suicidal behavior (N=55) and without suicidal behavior (N=51). We identified seven differentially methylated CpG sites and five differentially methylated regions between the two groups. Additionally, we found that DNA methylation changes in MIF and CACNA1C were associated with lethality or number of suicide attempts. Finally, we identified three meQTLs in SIRT1 , IMPA2 , and INPP1 . This study illustrates that DNA methylation is altered in individuals with bipolar disorder and a history of suicide attempts in regions known to harbor suicide-related variants.
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Mirza S, Lima CNC, Del Favero-Campbell A, Rubinstein A, Topolski N, Cabrera-Mendoza B, Kovács EHC, Blumberg HP, Richards JG, Williams AJ, Wemmie JA, Magnotta VA, Fiedorowicz JG, Gaine ME, Walss-Bass C, Quevedo J, Soares JC, Fries GR. Blood epigenome-wide association studies of suicide attempt in adults with bipolar disorder. Transl Psychiatry 2024; 14:70. [PMID: 38296944 PMCID: PMC10831084 DOI: 10.1038/s41398-024-02760-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/05/2024] [Accepted: 01/10/2024] [Indexed: 02/02/2024] Open
Abstract
Suicide attempt (SA) risk is elevated in individuals with bipolar disorder (BD), and DNA methylation patterns may serve as possible biomarkers of SA. We conducted epigenome-wide association studies (EWAS) of blood DNA methylation associated with BD and SA. DNA methylation was measured at >700,000 positions in a discovery cohort of n = 84 adults with BD with a history of SA (BD/SA), n = 79 adults with BD without history of SA (BD/non-SA), and n = 76 non-psychiatric controls (CON). EWAS revealed six differentially methylated positions (DMPs) and seven differentially methylated regions (DMRs) between BD/SA and BD/non-SA, with multiple immune-related genes implicated. There were no epigenome-wide significant differences when BD/SA and BD/non-SA were each compared to CON, and patterns suggested that epigenetics differentiating BD/SA from BD/non-SA do not differentiate BD/non-SA from CON. Weighted gene co-methylation network analysis and trait enrichment analysis of the BD/SA vs. BD/non-SA contrast further corroborated immune system involvement, while gene ontology analysis implicated calcium signalling. In an independent replication cohort of n = 48 BD/SA and n = 47 BD/non-SA, fold changes at the discovery cohort's significant sites showed moderate correlation across cohorts and agreement on direction. In both cohorts, classification accuracy for SA history among individuals with BD was highest when methylation at the significant CpG sites as well as information from clinical interviews were combined, with an AUC of 88.8% (CI = 83.8-93.8%) and 82.1% (CI = 73.6-90.5%) for the combined epigenetic-clinical classifier in the discovery and replication cohorts, respectively. Our results provide novel insight to the role of immune system functioning in SA and BD and also suggest that integrating information from multiple levels of analysis holds promise to improve risk assessment for SA in adults with BD.
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Affiliation(s)
- Salahudeen Mirza
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054, Houston, TX, USA
- Institute of Child Development, University of Minnesota, 55455, Minneapolis, MN, USA
- Department of Psychiatry, Yale School of Medicine, 06510, New Haven, CT, USA
| | - Camila N C Lima
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054, Houston, TX, USA
| | - Alexandra Del Favero-Campbell
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054, Houston, TX, USA
| | - Alexandre Rubinstein
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054, Houston, TX, USA
| | - Natasha Topolski
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054, Houston, TX, USA
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, 77054, Houston, TX, USA
| | | | - Emese H C Kovács
- Department of Neuroscience and Pharmacology, The University of Iowa, 51 Newton Rd, 52242, Iowa City, IA, USA
| | - Hilary P Blumberg
- Department of Psychiatry, Yale School of Medicine, 06510, New Haven, CT, USA
| | - Jenny Gringer Richards
- Department of Radiology, The University of Iowa, 200 Hawkins Dr, 52242, Iowa City, IA, USA
| | - Aislinn J Williams
- Department of Psychiatry, The University of Iowa, 200 Hawkins Dr, 52242, Iowa City, IA, USA
- Iowa Neuroscience Institute, The University of Iowa, 169 Newton Rd, 52242, Iowa City, IA, USA
| | - John A Wemmie
- Department of Psychiatry, The University of Iowa, 200 Hawkins Dr, 52242, Iowa City, IA, USA
- Iowa Neuroscience Institute, The University of Iowa, 169 Newton Rd, 52242, Iowa City, IA, USA
- Department of Veterans Affairs Medical Center, Iowa City, IA, USA
| | - Vincent A Magnotta
- Department of Radiology, The University of Iowa, 200 Hawkins Dr, 52242, Iowa City, IA, USA
- Department of Psychiatry, The University of Iowa, 200 Hawkins Dr, 52242, Iowa City, IA, USA
| | - Jess G Fiedorowicz
- University of Ottawa Brain and Mind Research Institute, Ottawa Hospital Research Institute, 501 Smyth, K1H 8L6, Ottawa, ON, Canada
| | - Marie E Gaine
- Iowa Neuroscience Institute, The University of Iowa, 169 Newton Rd, 52242, Iowa City, IA, USA
- Pharmaceutical Sciences and Experimental Therapeutics, The University of Iowa, 180 South Grand Ave, 52242, Iowa City, IA, USA
| | - Consuelo Walss-Bass
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054, Houston, TX, USA
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, 77054, Houston, TX, USA
| | - Joao Quevedo
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054, Houston, TX, USA
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, 77054, Houston, TX, USA
- Center of Excellence in Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, 1941 East Rd, 77054, Houston, TX, USA
- Center for Interventional Psychiatry, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, 1941 East Rd, 77054, Houston, TX, USA
| | - Jair C Soares
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054, Houston, TX, USA
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, 77054, Houston, TX, USA
- Center of Excellence in Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, 1941 East Rd, 77054, Houston, TX, USA
| | - Gabriel R Fries
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054, Houston, TX, USA.
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, 77054, Houston, TX, USA.
- Center of Excellence in Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, 1941 East Rd, 77054, Houston, TX, USA.
- Center for Interventional Psychiatry, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, 1941 East Rd, 77054, Houston, TX, USA.
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Kari D, Mijiti P, Zou S, Zhang P. Study on the correlation between suicidal ideation and ABI3BP gene、DPYSL2 gene methylation in pediatric bipolar disorder with depressive episode. Heliyon 2024; 10:e23680. [PMID: 38226278 PMCID: PMC10788454 DOI: 10.1016/j.heliyon.2023.e23680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 11/27/2023] [Accepted: 12/09/2023] [Indexed: 01/17/2024] Open
Abstract
Patients with bipolar disorder have a higher risk of suicide than the general population. This study aimed to explore the correlation between suicide and gene methylation, as screened by genome-wide scanning, in children and adolescents with bipolar disorder. A total of 45 children and adolescents with bipolar disorder were divided into a suicidal ideation group (n = 41), a non-suicidal ideation group (n = 4), a low-risk group (n = 12), and a middle-to-high-risk group (n = 33). A pre-experiment was conducted on the suicidal ideation (n = 6) and non-suicidal ideation groups (n = 4). Blood samples were scanned using an Illumina HD 850K microarray, and methylation levels were analysed. Differential methylation sites among the sample groups were screened from the original data, and genes related to suicide were identified. Methylation of the ABI3BP and DPYSL2 genes was detected by pyrophosphate sequencing and statistically analysed. There was a significant difference in age between the low- and middle-risk groups. The results of GO analysis for the suicidal ideation and non-suicidal ideation groups showed that the differential methylation sites were mainly involved in the interferon-γ-mediated signalling pathway, with the main signalling pathways being the inflammatory bowel disease (IBD) pathway and type 1 diabetes mellitus (T1DM) pathway. There were significant differences in the methylation of ABI3BP, HLA-DQB1, HLA-DRB1, AUTS2, SP3, NINJ2, DPYSL2, and other genes between the suicidal and non-suicidal ideation groups. There was also a statistically significant difference in the gene methylation levels between the two groups. However, there was no significant difference in the degree of methylation of the ABI3BP and DPYSL2 genes between the low- and middle-to-high-risk groups. These results suggest that suicidal ideation is correlated with the methylation levels of differentially methylated genes in children with bipolar disorder. However, the severity of suicide risk in paediatric patients with bipolar disorder may not be correlated with the degree of methylation of the ABI3BP and DPYSL2 genes. Therefore, further validation was required.
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Affiliation(s)
- Dilinazi Kari
- Department of Clinical Psychology, Xinjiang Uygur Autonomous Region People's Hospital, Urumqi Xinjiang, 830001, China
| | - Peierdun Mijiti
- Department of Epidemiology and Biostatistics, School of Public Health, Urumqi Xinjiang, 830001, China
| | - Shaohong Zou
- Department of Clinical Psychology, Xinjiang Uygur Autonomous Region People's Hospital, Urumqi Xinjiang, 830001, China
| | - Peiwen Zhang
- Medical College, Shihezi University, Shihezi, Xinjiang, 832003, China
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Zhou Y, Xiong L, Chen✉ J, Wang✉ Q. Integrative Analyses of scRNA-seq, Bulk mRNA-seq, and DNA Methylation Profiling in Depressed Suicide Brain Tissues. Int J Neuropsychopharmacol 2023; 26:840-855. [PMID: 37774423 PMCID: PMC10726413 DOI: 10.1093/ijnp/pyad057] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 09/27/2023] [Indexed: 10/01/2023] Open
Abstract
BACKGROUND Suicidal behaviors have become a serious public health concern globally due to the economic and human cost of suicidal behavior to individuals, families, communities, and society. However, the underlying etiology and biological mechanism of suicidal behavior remains poorly understood. METHODS We collected different single omic data, including single-cell RNA sequencing (scRNA-seq), bulk mRNA-seq, DNA methylation microarrays from the cortex of Major Depressive Disorder (MDD) in suicide subjects' studies, as well as fluoxetine-treated rats brains. We matched subject IDs that overlapped between the transcriptome dataset and the methylation dataset. The differential expression genes and differentially methylated regions were calculated with a 2-group comparison analysis. Cross-omics analysis was performed to calculate the correlation between the methylated and transcript levels of differentially methylated CpG sites and mapped transcripts. Additionally, we performed a deconvolution analysis for bulk mRNA-seq and DNA methylation profiling with scRNA-seq as the reference profiles. RESULTS Difference in cell type proportions among 7 cell types. Meanwhile, our analysis of single-cell sequence from the antidepressant-treated rats found that drug-specific differential expression genes were enriched into biological pathways, including ion channels and glutamatergic receptors. CONCLUSIONS This study identified some important dysregulated genes influenced by DNA methylation in 2 brain regions of depression and suicide patients. Interestingly, we found that oligodendrocyte precursor cells (OPCs) have the most contributors for cell-type proportions related to differential expression genes and methylated sites in suicidal behavior.
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Affiliation(s)
- Yalan Zhou
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lan Xiong
- Montreal Neurological Institute and Hospital, McGill University, Montreal, Canada
| | - Jianhua Chen✉
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingzhong Wang✉
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Navarro D, Marín-Mayor M, Gasparyan A, García-Gutiérrez MS, Rubio G, Manzanares J. Molecular Changes Associated with Suicide. Int J Mol Sci 2023; 24:16726. [PMID: 38069051 PMCID: PMC10706600 DOI: 10.3390/ijms242316726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 12/18/2023] Open
Abstract
Suicide is a serious global public health problem, with a worrying recent increase in suicide rates in both adolescent and adult populations. However, it is essential to recognize that suicide is preventable. A myriad of factors contributes to an individual's vulnerability to suicide. These factors include various potential causes, from psychiatric disorders to genetic and epigenetic alterations. These changes can induce dysfunctions in crucial systems such as the serotonergic, cannabinoid, and hypothalamic-pituitary-adrenal axes. In addition, early life experiences of abuse can profoundly impact an individual's ability to cope with stress, ultimately leading to changes in the inflammatory system, which is a significant risk factor for suicidal behavior. Thus, it is clear that suicidal behavior may result from a confluence of multiple factors. This review examines the primary risk factors associated with suicidal behavior, including psychiatric disorders, early life adversities, and epigenetic modifications. Our goal is to elucidate the molecular changes at the genetic, epigenetic, and molecular levels in the brains of individuals who have taken their own lives and in the plasma and peripheral mononuclear cells of suicide attempters and how these changes may serve as predisposing factors for suicidal tendencies.
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Affiliation(s)
- Daniela Navarro
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Avda de Ramón y Cajal s/n, San Juan de Alicante, 03550 Alicante, Spain; (D.N.); (A.G.); (M.S.G.-G.)
- Redes de Investigación Cooperativa Orientada a Resultados en Salud (RICORS), Red de Investigación en Atención Primaria de Adicciones (RIAPAd), Instituto de Salud Carlos III, MICINN and FEDER, 28029 Madrid, Spain;
- Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), 03010 Alicante, Spain
| | - Marta Marín-Mayor
- Instituto de Investigación i+12, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain;
- Department of Psychiatry, Complutense University of Madrid, 28040 Madrid, Spain
| | - Ani Gasparyan
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Avda de Ramón y Cajal s/n, San Juan de Alicante, 03550 Alicante, Spain; (D.N.); (A.G.); (M.S.G.-G.)
- Redes de Investigación Cooperativa Orientada a Resultados en Salud (RICORS), Red de Investigación en Atención Primaria de Adicciones (RIAPAd), Instituto de Salud Carlos III, MICINN and FEDER, 28029 Madrid, Spain;
- Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), 03010 Alicante, Spain
| | - María Salud García-Gutiérrez
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Avda de Ramón y Cajal s/n, San Juan de Alicante, 03550 Alicante, Spain; (D.N.); (A.G.); (M.S.G.-G.)
- Redes de Investigación Cooperativa Orientada a Resultados en Salud (RICORS), Red de Investigación en Atención Primaria de Adicciones (RIAPAd), Instituto de Salud Carlos III, MICINN and FEDER, 28029 Madrid, Spain;
- Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), 03010 Alicante, Spain
| | - Gabriel Rubio
- Redes de Investigación Cooperativa Orientada a Resultados en Salud (RICORS), Red de Investigación en Atención Primaria de Adicciones (RIAPAd), Instituto de Salud Carlos III, MICINN and FEDER, 28029 Madrid, Spain;
- Instituto de Investigación i+12, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain;
- Department of Psychiatry, Complutense University of Madrid, 28040 Madrid, Spain
| | - Jorge Manzanares
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Avda de Ramón y Cajal s/n, San Juan de Alicante, 03550 Alicante, Spain; (D.N.); (A.G.); (M.S.G.-G.)
- Redes de Investigación Cooperativa Orientada a Resultados en Salud (RICORS), Red de Investigación en Atención Primaria de Adicciones (RIAPAd), Instituto de Salud Carlos III, MICINN and FEDER, 28029 Madrid, Spain;
- Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), 03010 Alicante, Spain
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Jones JD, Martinez S, Gonzalez I, Odom GJ, Comer SD. No evidence of accelerated epigenetic aging among black heroin users: A case vs control analysis. ADDICTION NEUROSCIENCE 2023; 7:100096. [PMID: 37388854 PMCID: PMC10305791 DOI: 10.1016/j.addicn.2023.100096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
This study sought to assess the association between illicit opioid use and accelerated epigenetic aging (A.K.A. DNAm Age) among people of African ancestry who use heroin. DNA was obtained from participants with opioid use disorder (OUD) who confirmed heroin as their primary drug of choice. Clinical inventories of drug use included: the Addiction Severity Index (ASI) Drug-Composite Score (range: 0-1), and Drug Abuse Screening Test (DAST-10; range: 0-10). A control group of participants of African ancestry who did not use heroin was recruited and matched to heroin users on sex, age, socioeconomic level, and smoking status. Methylation data were assessed in an epigenetic clock to determined and compare Epigenetic Age to Chronological Age (i.e., age acceleration or deceleration). Data were obtained from 32 controls [mean age 36.3 (±7.5) years] and 64 heroin users [mean age 48.1 (±6.6) years]. The experimental group used heroin for an average of 18.1 (±10.6) years, reported use of 6.4 (±6.1) bags of heroin/day, with a mean DAST-10 score of 7.0 (±2.6) and ASI Score of 0.33 (±0.19). Mean age acceleration for heroin users [+0.56 (± 9.5) years] was significantly (p< 0.05) lower than controls [+5.19 (± 9.1) years]. This study did not find evidence that heroin use causes epigenetic age acceleration.
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Affiliation(s)
- Jermaine D. Jones
- Department of Psychiatry, Division on Substance Use Disorders, New York State Psychiatric Institute, and Columbia University Irving Medical Center, 1051 Riverside Drive, New York, NY 10032, USA
| | - Suky Martinez
- Department of Psychiatry, Division on Substance Use Disorders, New York State Psychiatric Institute, and Columbia University Irving Medical Center, 1051 Riverside Drive, New York, NY 10032, USA
| | - Ingrid Gonzalez
- Department of Biostatistics, Robert Stempel College of Public Health, Florida International University, 1200 SW 8th St, Miami, FL 33174, USA
| | - Gabriel J. Odom
- Department of Biostatistics, Robert Stempel College of Public Health, Florida International University, 1200 SW 8th St, Miami, FL 33174, USA
| | - Sandra D. Comer
- Department of Psychiatry, Division on Substance Use Disorders, New York State Psychiatric Institute, and Columbia University Irving Medical Center, 1051 Riverside Drive, New York, NY 10032, USA
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Mirza S, de Carvalho Lima CN, Del Favero-Campbell A, Rubinstein A, Topolski N, Cabrera-Mendoza B, Kovács EH, Blumberg HP, Richards JG, Williams AJ, Wemmie JA, Magnotta VA, Fiedorowicz JG, Gaine ME, Walss-Bass C, Quevedo J, Soares JC, Fries GR. Blood epigenome-wide association studies of suicide attempt in adults with bipolar disorder. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.07.20.23292968. [PMID: 37546994 PMCID: PMC10402220 DOI: 10.1101/2023.07.20.23292968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Suicide attempt (SA) risk is elevated in individuals with bipolar disorder (BD), and DNA methylation patterns may serve as possible biomarkers of SA. We conducted epigenome-wide association studies (EWAS) of blood DNA methylation associated with BD and SA. DNA methylation was measured at > 700,000 positions in a discovery cohort of n = 84 adults with BD with a history of SA (BD/SA), n = 79 adults with BD without history of SA (BD/non-SA), and n = 76 non-psychiatric controls (CON). EWAS revealed six differentially methylated positions (DMPs) and seven differentially methylated regions (DMRs) between BD/SA and BD/non-SA, with multiple immune-related genes implicated. There were no epigenome-wide significant differences when BD/SA and BD/non-SA were each compared to CON, and patterns suggested that epigenetics differentiating BD/SA from BD/non-SA do not differentiate BD/non-SA from CON. Weighted gene co-methylation network analysis and trait enrichment analysis of the BD/SA vs. BD/non-SA contrast further corroborated immune system involvement, while gene ontology analysis implicated calcium signalling. In an independent replication cohort of n = 48 BD/SA and n = 47 BD/non-SA, fold-changes at the discovery cohort's significant sites showed moderate correlation across cohorts and agreement on direction. In both cohorts, classification accuracy for SA history among individuals with BD was highest when methylation at the significant CpG sites as well as information from clinical interviews were combined, with an AUC of 88.8% (CI = 83.8-93.8%) and 82.1% (CI = 73.6-90.5%) for the combined epigenetic-clinical predictor in the discovery and replication cohorts, respectively. Our results provide novel insight to the role of immune system functioning in SA and BD and also suggest that integrating information from multiple levels of analysis holds promise to improve risk assessment for SA in adults with BD.
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Affiliation(s)
- Salahudeen Mirza
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054 Houston, Texas, USA
- Institute of Child Development, University of Minnesota, 55455 Minneapolis, Minnesota, USA
| | - Camila N. de Carvalho Lima
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054 Houston, Texas, USA
| | - Alexandra Del Favero-Campbell
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054 Houston, Texas, USA
| | - Alexandre Rubinstein
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054 Houston, Texas, USA
| | - Natasha Topolski
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054 Houston, Texas, USA
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, 77054 Houston, Texas, USA
| | | | - Emese H.C. Kovács
- Department of Neuroscience and Pharmacology, The University of Iowa, 51 Newton Rd, 52242 Iowa City, Iowa, USA
| | - Hilary P. Blumberg
- Department of Psychiatry, Yale School of Medicine, 06510 New Haven, Connecticut, USA
| | - Jenny Gringer Richards
- Department of Radiology, The University of Iowa. 200 Hawkins Dr, 52242 Iowa City, Iowa, USA
| | - Aislinn J. Williams
- Department of Psychiatry, The University of Iowa. 200 Hawkins Dr, 52242 Iowa City, Iowa, USA
- Iowa Neuroscience Institute, The University of Iowa. 169 Newton Rd, 52242 Iowa City, Iowa USA
| | - John A. Wemmie
- Department of Psychiatry, The University of Iowa. 200 Hawkins Dr, 52242 Iowa City, Iowa, USA
- Iowa Neuroscience Institute, The University of Iowa. 169 Newton Rd, 52242 Iowa City, Iowa USA
- Department of Veterans Affairs Medical Center, Iowa City, Iowa, USA
| | - Vincent A. Magnotta
- Department of Radiology, The University of Iowa. 200 Hawkins Dr, 52242 Iowa City, Iowa, USA
- Department of Psychiatry, The University of Iowa. 200 Hawkins Dr, 52242 Iowa City, Iowa, USA
| | - Jess G. Fiedorowicz
- University of Ottawa Brain and Mind Research Institute, Ottawa Hospital Research Institute. 501 Smyth, K1H 8L6, Ottawa, Ontario, Canada
| | - Marie E. Gaine
- Iowa Neuroscience Institute, The University of Iowa. 169 Newton Rd, 52242 Iowa City, Iowa USA
- Pharmaceutical Sciences and Experimental Therapeutics, The University of Iowa, 180 South Grand Ave, 52242, Iowa City, Iowa, USA
| | - Consuelo Walss-Bass
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054 Houston, Texas, USA
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, 77054 Houston, Texas, USA
| | - Joao Quevedo
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054 Houston, Texas, USA
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, 77054 Houston, Texas, USA
- Center of Excellence in Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, 1941 East Rd, 77054, Houston, Texas, USA
| | - Jair C. Soares
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054 Houston, Texas, USA
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, 77054 Houston, Texas, USA
- Center of Excellence in Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, 1941 East Rd, 77054, Houston, Texas, USA
| | - Gabriel R. Fries
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), 77054 Houston, Texas, USA
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, 77054 Houston, Texas, USA
- Center of Excellence in Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, 1941 East Rd, 77054, Houston, Texas, USA
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8
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Gim JA. Integrative Approaches of DNA Methylation Patterns According to Age, Sex and Longitudinal Changes. Curr Genomics 2023; 23:385-399. [PMID: 37920553 PMCID: PMC10173416 DOI: 10.2174/1389202924666221207100513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 10/04/2022] [Accepted: 11/04/2022] [Indexed: 12/12/2022] Open
Abstract
Background In humans, age-related DNA methylation has been studied in blood, tissues, buccal swabs, and fibroblasts, and changes in DNA methylation patterns according to age and sex have been detected. To date, approximately 137,000 samples have been analyzed from 14,000 studies, and the information has been uploaded to the NCBI GEO database. Methods A correlation between age and methylation level and longitudinal changes in methylation levels was revealed in both sexes. Here, 20 public datasets derived from whole blood were analyzed using the Illumina BeadChip. Batch effects with respect to the time differences were correlated. The overall change in the pattern was provided as the inverse of the coefficient of variation (COV). Results Of the 20 datasets, nine were from a longitudinal study. All data had age and sex as common variables. Comprehensive details of age-, sex-, and longitudinal change-based DNA methylation levels in the whole blood sample were elucidated in this study. ELOVL2 and FHL2 showed the maximum correlation between age and DNA methylation. The methylation patterns of genes related to mental health differed according to age. Age-correlated genes have been associated with malformations (anteverted nostril, craniofacial abnormalities, and depressed nasal bridge) and drug addiction (drug habituation and smoking). Conclusion Based on 20 public DNA methylation datasets, methylation levels according to age and longitudinal changes by sex were identified and visualized using an integrated approach. The results highlight the molecular mechanisms underlying the association of sex and biological age with changes in DNA methylation, and the importance of optimal genomic information management.
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Affiliation(s)
- Jeong-An Gim
- Medical Science Research Center, College of Medicine, Korea University Guro Hospital, Seoul 08308, Republic of Korea
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9
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Mirza S, Docherty AR, Bakian A, Coon H, Soares JC, Walss-Bass C, Fries GR. Genetics and epigenetics of self-injurious thoughts and behaviors: Systematic review of the suicide literature and methodological considerations. Am J Med Genet B Neuropsychiatr Genet 2022; 189:221-246. [PMID: 35975759 PMCID: PMC9900606 DOI: 10.1002/ajmg.b.32917] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/26/2022] [Accepted: 07/26/2022] [Indexed: 02/01/2023]
Abstract
Suicide is a multifaceted and poorly understood clinical outcome, and there is an urgent need to advance research on its phenomenology and etiology. Epidemiological studies have demonstrated that suicidal behavior is heritable, suggesting that genetic and epigenetic information may serve as biomarkers for suicide risk. Here we systematically review the literature on genetic and epigenetic alterations observed in phenotypes across the full range of self-injurious thoughts and behaviors (SITB). We included 577 studies focused on genome-wide and epigenome-wide associations, candidate genes (SNP and methylation), noncoding RNAs, and histones. Convergence of specific genes is limited across units of analysis, although pathway-based analyses do indicate nervous system development and function and immunity/inflammation as potential underlying mechanisms of SITB. We provide suggestions for future work on the genetic and epigenetic correlates of SITB with a specific focus on measurement issues.
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Affiliation(s)
- Salahudeen Mirza
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), Houston, Texas, USA,Institute of Child Development, University of Minnesota, Minneapolis, Minnesota, USA
| | - Anna R. Docherty
- Department of Psychiatry, University of Utah School of Medicine, Salt Lake City, Utah, USA,Huntsman Mental Health Institute, Salt Lake City, Utah, USA,Department of Psychiatry, The Virginia Commonwealth University, Richmond, Virginia, USA
| | - Amanda Bakian
- Department of Psychiatry, University of Utah School of Medicine, Salt Lake City, Utah, USA,Huntsman Mental Health Institute, Salt Lake City, Utah, USA
| | - Hilary Coon
- Department of Psychiatry, University of Utah School of Medicine, Salt Lake City, Utah, USA,Huntsman Mental Health Institute, Salt Lake City, Utah, USA
| | - Jair C. Soares
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), Houston, Texas, USA,Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, Texas, USA
| | - Consuelo Walss-Bass
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), Houston, Texas, USA,Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, Texas, USA
| | - Gabriel R. Fries
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), Houston, Texas, USA,Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, Texas, USA,Center for Precision Health, School of Biomedical Informatics, The University of Texas Health Science Center at Houston (UTHealth), Houston, Texas, USA
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10
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Pedigree-based study to identify GOLGB1 as a risk gene for bipolar disorder. Transl Psychiatry 2022; 12:390. [PMID: 36115840 PMCID: PMC9482626 DOI: 10.1038/s41398-022-02163-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 09/06/2022] [Accepted: 09/08/2022] [Indexed: 11/08/2022] Open
Abstract
Bipolar disorder (BD) is a complex psychiatric disorder with strong heritability. Identification of new BD risk genes will help determine the mechanism underlying disease pathogenesis. In the present study, we carried out whole genome sequencing for a Chinese BD family with three affected members and three unaffected members, and identified multiple candidate causal variations, including a frameshift mutation in the GOLGB1 gene. Since a GOLGB1 missense mutation was also found in another BD pedigree, we carried out functional studies by downregulating Golgb1 expression in the brain of neonatal mice. Golgb1 deficiency had no effect on anxiety, memory, and social behaviors in young adult mice. However, we found that young adult mice with Golgb1 deficiency exhibited elevated locomotor activity and decreased depressive behaviors in the tail suspension test and the sucrose preference test, but increased depressive behaviors in the forced swim test, resembling the dual character of BD patients with both mania and depression. Moreover, Golgb1 downregulation reduced PSD93 levels and Akt phosphorylation in the brain. Together, our results indicate that GOLGB1 is a strong BD risk gene candidate whose deficiency may result in BD phenotypes possibly through affecting PSD93 and PI3K/Akt signaling.
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11
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Dada O, Jeremian R, Dai N, Strauss J, Zai C, Graff A, De Luca V. Investigation of accelerated epigenetic aging in individuals experiencing suicidal ideation. Schizophr Res 2022; 243:307-309. [PMID: 33041163 DOI: 10.1016/j.schres.2020.09.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 09/17/2020] [Accepted: 09/26/2020] [Indexed: 10/23/2022]
Affiliation(s)
| | - Richie Jeremian
- CAMH, Department of Psychiatry, University of Toronto, Canada
| | - Nasia Dai
- CAMH, Department of Psychiatry, University of Toronto, Canada
| | - John Strauss
- CAMH, Department of Psychiatry, University of Toronto, Canada
| | - Clement Zai
- CAMH, Department of Psychiatry, University of Toronto, Canada
| | - Ariel Graff
- CAMH, Department of Psychiatry, University of Toronto, Canada
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12
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Lozupone M, Mollica A, Berardino G, Sardone R, Panza F. Could epigenetics play a role in suicidal behavior in older age? Epigenomics 2021; 14:73-79. [PMID: 34784757 DOI: 10.2217/epi-2021-0390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Tweetable abstract There is growing evidence of a role of environmental exposures in the pathogenesis and epigenetics of suicidal behavior in older age.
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Affiliation(s)
- Madia Lozupone
- Neurodegenerative Disease Unit, Department of Basic Medical Sciences, Neuroscience & Sense Organs, University of Bari Aldo Moro, Bari, 70100, Italy
| | - Anita Mollica
- Psychiatric Unit, Department of Clinical & Experimental Medicine, University of Foggia, Foggia, 71122, Italy
| | - Giuseppe Berardino
- Psychiatric Unit, Department of Clinical & Experimental Medicine, University of Foggia, Foggia, 71122, Italy
| | - Rodolfo Sardone
- Salus In Apulia Study: Frailty Phenotypes Research Unit, National Institute of Gastroenterology 'Saverio de Bellis', Research Hospital, Castellana Grotte Bari, 70013, Italy
| | - Francesco Panza
- Salus In Apulia Study: Frailty Phenotypes Research Unit, National Institute of Gastroenterology 'Saverio de Bellis', Research Hospital, Castellana Grotte Bari, 70013, Italy
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13
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Ramos-Rosales DF, Vazquez-Alaniz F, Urtiz-Estrada N, Ramirez-Valles EG, Mendez-Hernádez EM, Salas-Leal AC, Barraza-Salas M. Epigenetic marks in suicide: a review. Psychiatr Genet 2021; 31:145-161. [PMID: 34412082 DOI: 10.1097/ypg.0000000000000297] [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: 11/25/2022]
Abstract
Suicide is a complex phenomenon and a global public health problem that involves several biological factors that could contribute to the pathophysiology of suicide. There is evidence that epigenetic factors influence some psychiatric disorders, suggesting a predisposition to suicide or suicidal behavior. Here, we review studies of molecular mechanisms of suicide in an epigenetic perspective in the postmortem brain of suicide completers and peripheral blood cells of suicide attempters. Besides, we include studies of gene-specific DNA methylation, epigenome-wide association, histone modification, and interfering RNAs as epigenetic factors. This review provides an overview of the epigenetic mechanisms described in different biological systems related to suicide, contributing to an understanding of the genetic regulation in suicide. We conclude that epigenetic marks are potential biomarkers in suicide, and they could become attractive therapeutic targets due to their reversibility and importance in regulating gene expression.
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Affiliation(s)
| | - Fernando Vazquez-Alaniz
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango
- Hospital General 450. Servicios de Salud de Durango
| | | | | | - Edna M Mendez-Hernádez
- Instituto de Investigación Científica, Universidad Juárez del Estado de Durango, Durango, México
| | - Alma C Salas-Leal
- Instituto de Investigación Científica, Universidad Juárez del Estado de Durango, Durango, México
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14
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Dada O, Adanty C, Dai N, Jeremian R, Alli S, Gerretsen P, Graff A, Strauss J, De Luca V. Biological aging in schizophrenia and psychosis severity: DNA methylation analysis. Psychiatry Res 2021; 296:113646. [PMID: 33444986 DOI: 10.1016/j.psychres.2020.113646] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 12/10/2020] [Indexed: 01/08/2023]
Abstract
The physiological changes associated with normal aging are known to occur earlier in individuals with schizophrenia (SCZ). One of the phenomena linked with normal aging is the change in patterns of epigenetic modifications. We recruited 138 individuals with SCZ spectrum disorders and extracted DNA from white blood cells. The combinations of pre-selected DNA methylation sites were utilized to estimate the 'methylation age' (DNAm age) and evaluate evidence of epigenetic age acceleration. We investigated the correlation between the epigenetic age acceleration measures and psychosis severity; furthermore, we estimated blood cell counts based on DNA methylation levels. The extrinsic epigenetic age acceleration showed a significant correlation with the Brief Psychiatric Rating Scale (BPRS) disorganization subscale(r=0.222, p=0.039).Both Horvath age acceleration and Hannum age acceleration showed a significant correlation (r=0.221, p=0.029; r=0.242, p=0.017 respectively) with the Symptom Checklist 90 (SCL-90) psychotic domain. Overall, this study shows some evidence of epigenetic age acceleration associated with psychosis severity using two different algorithms for DNAm age analysis.
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Affiliation(s)
- Oluwagbenga Dada
- CAMH, Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Christopher Adanty
- CAMH, Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Nasia Dai
- CAMH, Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Richie Jeremian
- CAMH, Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Sauliha Alli
- CAMH, Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Philip Gerretsen
- CAMH, Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Ariel Graff
- CAMH, Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - John Strauss
- CAMH, Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Vincenzo De Luca
- CAMH, Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
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15
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Distinct epigenetic signatures between adult-onset and late-onset depression. Sci Rep 2021; 11:2296. [PMID: 33504850 PMCID: PMC7840753 DOI: 10.1038/s41598-021-81758-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 01/11/2021] [Indexed: 12/16/2022] Open
Abstract
The heterogeneity of major depressive disorder (MDD) is attributed to the fact that diagnostic criteria (e.g., DSM-5) are only based on clinical symptoms. The discovery of blood biomarkers has the potential to change the diagnosis of MDD. The purpose of this study was to identify blood biomarkers of DNA methylation by strategically subtyping patients with MDD by onset age. We analyzed genome-wide DNA methylation of patients with adult-onset depression (AOD; age ≥ 50 years, age at depression onset < 50 years; N = 10) and late-onset depression (LOD; age ≥ 50 years, age at depression onset ≥ 50 years; N = 25) in comparison to that of 30 healthy subjects. The methylation profile of the AOD group was not only different from that of the LOD group but also more homogenous. Six identified methylation CpG sites were validated by pyrosequencing and amplicon bisulfite sequencing as potential markers for AOD in a second set of independent patients with AOD and healthy control subjects (N = 11). The combination of three specific methylation markers achieved the highest accuracy (sensitivity, 64%; specificity, 91%; accuracy, 77%). Taken together, our findings suggest that DNA methylation markers are more suitable for AOD than for LOD patients.
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16
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Okazaki S, Numata S, Otsuka I, Horai T, Kinoshita M, Sora I, Ohmori T, Hishimoto A. Decelerated epigenetic aging associated with mood stabilizers in the blood of patients with bipolar disorder. Transl Psychiatry 2020; 10:129. [PMID: 32366819 PMCID: PMC7198548 DOI: 10.1038/s41398-020-0813-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 04/15/2020] [Accepted: 04/21/2020] [Indexed: 02/07/2023] Open
Abstract
There is high mortality among patients with bipolar disorder (BD). Studies have reported accelerated biological aging in patients with BD. Recently, Horvath and Hannum et al. independently developed DNA methylation (DNAm) profiles as "epigenetic clocks," which are the most accurate biological age estimate. This led to the development of two accomplished measures of epigenetic age acceleration (EAA) using blood samples, namely, intrinsic and extrinsic EAA (IEAA and EEAA, respectively). IEAA, which is based on Horvath's clock, is independent of blood cell counts and indicates cell-intrinsic aging. On the other hand, EEAA, which is based on Hannum's clock, is associated with age-dependent changes in blood cell counts and indicates immune system aging. Further, Lu et al. developed the "GrimAge" clock, which can strongly predict the mortality risk, and DNAm-based telomere length (DNAmTL). We used a DNAm dataset from whole blood samples obtained from 30 patients with BD and 30 healthy controls. We investigated Horvath EAA, IEAA, Hannum EAA, EEAA, Grim EAA, DNAmTL, and DNAm-based blood cell composition. Compared with controls, there was a decrease in Horvath EAA and IEAA in patients with BD. Further, there was a significant decrease in Horvath EAA and IEAA in patients with BD taking medication combinations of mood stabilizers (including lithium carbonate, sodium valproate, and carbamazepine) than in those taking no medication/monotherapy. This study provides novel evidence indicating decelerated epigenetic aging associated with mood stabilizers in patients with BD.
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Affiliation(s)
- Satoshi Okazaki
- grid.31432.370000 0001 1092 3077Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shusuke Numata
- grid.267335.60000 0001 1092 3579Department of Psychiatry, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Ikuo Otsuka
- grid.31432.370000 0001 1092 3077Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tadasu Horai
- grid.31432.370000 0001 1092 3077Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Makoto Kinoshita
- grid.267335.60000 0001 1092 3579Department of Psychiatry, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Ichiro Sora
- grid.31432.370000 0001 1092 3077Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tetsuro Ohmori
- grid.267335.60000 0001 1092 3579Department of Psychiatry, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Akitoyo Hishimoto
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan.
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17
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Cheung S, Woo J, Maes MS, Zai CC. Suicide epigenetics, a review of recent progress. J Affect Disord 2020; 265:423-438. [PMID: 32090769 DOI: 10.1016/j.jad.2020.01.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 11/17/2019] [Accepted: 01/11/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND Suicide results in over 800,000 deaths every year, making it a major public health concern worldwide. It is highly complex, with genetic and environmental influences. Epigenetic mechanisms, including DNA methylation, miRNA, and histone modifications, could explain the complex interplay of environmental risk factors with genetic risk factors in the emergence of suicidal behavior. METHODS Here, we review the literature on suicide epigenetics over the past 10 years. RESULTS There has been significant progress in the field of suicide epigenetics, with emerging findings in the brain-derived neurotrophic factor and hypothalamic-pituitary-adrenal axis genes. LIMITATIONS Studying patient subgroups is needed in order to extract more comparable and reproducible epigenetic findings in suicide. CONCLUSIONS It is crucial to consider suicidal patients or suicide victims' distal and proximal past history e.g., early-life adversity and psychiatric disorder in epigenetic studies of suicidality.
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Affiliation(s)
- Serina Cheung
- Neurogenetics Section, Tanenbaum Centre for Pharmacogenetics, Molecular Brain Science, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Canada
| | - Julia Woo
- Neurogenetics Section, Tanenbaum Centre for Pharmacogenetics, Molecular Brain Science, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Canada; Faculty of Medicine, University of Toronto, Canada
| | - Miriam S Maes
- Neurogenetics Section, Tanenbaum Centre for Pharmacogenetics, Molecular Brain Science, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Canada
| | - Clement C Zai
- Neurogenetics Section, Tanenbaum Centre for Pharmacogenetics, Molecular Brain Science, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Canada; Division of Brain and Therapeutics, Department of Psychiatry, University of Toronto, Canada; Institute of Medical Science, University of Toronto, Canada; Laboratory Medicine and Pathobiology, University of Toronto, Canada; Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, USA.
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18
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Okazaki S, Otsuka I, Horai T, Hirata T, Takahashi M, Ueno Y, Boku S, Sora I, Hishimoto A. Accelerated extrinsic epigenetic aging and increased natural killer cells in blood of suicide completers. Prog Neuropsychopharmacol Biol Psychiatry 2020; 98:109805. [PMID: 31707091 DOI: 10.1016/j.pnpbp.2019.109805] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 11/03/2019] [Accepted: 11/05/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Studies suggest aberrant DNA methylation in victims of suicide. Recently, DNA methylation profiles have been developed for determining "epigenetic age," which is the most accurate estimate of biological age. Subsequently, two refined measures of epigenetic age acceleration have been expanded for blood samples as intrinsic and extrinsic epigenetic age acceleration (IEAA and EEAA, respectively). IEAA involves pure epigenetic aging independent of blood cell composition, whereas EEAA involves immunosenescence in association with blood cell composition. METHODS We investigated epigenetic age acceleration using two independent DNA methylation datasets: a brain dataset from 16 suicide completers and 15 non-psychiatric controls and a blood dataset compiled using economical DNA pooling technique from 56 suicide completers and 60 living healthy controls. In the blood dataset, we considered IEAA and EEAA, as well as DNA methylation-based blood cell composition. RESULTS There was no significant difference in universal epigenetic age acceleration between suicide completers and controls in both brain and blood datasets. Blood of suicide completers exhibited an increase in EEAA, but not in IEAA. We additionally found that suicide completers had more natural killer cells but fewer granulocytes compared to controls. CONCLUSION This study provides novel evidence for accelerated extrinsic epigenetic aging in suicide completers and for the potential application of natural killer cells as a biomarker for suicidal behavior.
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Affiliation(s)
- Satoshi Okazaki
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Ikuo Otsuka
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tadasu Horai
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takashi Hirata
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Motonori Takahashi
- Division of Legal Medicine, Department of Community Medicine and Social Health Science, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yasuhiro Ueno
- Division of Legal Medicine, Department of Community Medicine and Social Health Science, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shuken Boku
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Ichiro Sora
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Akitoyo Hishimoto
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan.
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19
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Abstract
Suicidal behaviors have been associated with both heritable genetic variables and environmental risk factors. Epigenetic processes, such as DNA methylation, have important roles in mediating the effects of the environment on behavior. Dysregulation of these processes has been observed in many psychiatric disorders, and evidence suggests that they may also be involved in suicidal behaviors. Herein, we have summarized candidate gene and epigenome-wide studies which have investigated DNA methylation in relation to suicidal behaviors, as well as discussed some of the limitations of the field to date.
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Affiliation(s)
- Laura M Fiori
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, McGill University, Verdun, QC, Canada
| | - Gustavo Turecki
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, McGill University, Verdun, QC, Canada.
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20
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Appaji A, Nagendra B, Chako DM, Padmanabha A, Hiremath CV, Jacob A, Varambally S, Kesavan M, Venkatasubramanian G, Rao SV, Webers CAB, Berendschot TTJM, Rao NP. Retinal vascular abnormalities in schizophrenia and bipolar disorder: A window to the brain. Bipolar Disord 2019; 21:634-641. [PMID: 31009139 DOI: 10.1111/bdi.12779] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES The examination of retinal microvascular abnormalities through fundus photography is currently the best available non-invasive technique for assessment of cerebral vascular status. Several studies in the last decade have reported higher incidences of adverse cerebrovascular events in Schizophrenia (SCZ) and bipolar disorder (BD). However, retinal microvasculature abnormalities in SCZ and BD have remained under-explored, and no study has compared this aspect of SCZ and BD till date. METHODS Retinal Images of 100 SCZ patients, BD patients, and healthy volunteers each were acquired by trained individuals using a non-mydriatic camera with a 40-degree field of view. The retinal images were quantified using a valid semi-automated method. The average of left and right eye diameters of the venules and arterioles passing through the extended zone between 0.5 and 2 disc diameters from the optic disc were calculated. RESULTS The groups differed significantly with respect to average diameters of both retinal venules (P < 0.001) and retinal arterioles (P < 0.001), after controlling for age and sex. Both SCZ and BD patients had significantly narrower arterioles and wider venules compared to HV. There were also significant differences between SCZ and BD patients; patients with BD had narrower arterioles and wider venules. CONCLUSION Considering the affordability and easy accessibility of the investigative procedure, retinal microvascular examination could serve as a potential screening tool to identify individuals at risk for adverse cerebrovascular events. The findings of the current study also provide a strong rationale for further systematic examination of retinal vascular abnormalities in SCZ and BD.
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Affiliation(s)
- Abhishek Appaji
- Department of Medical Electronics, BMS College of Engineering, Bangalore, India.,University Eye Clinic Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Bhargavi Nagendra
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Dona M Chako
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Ananth Padmanabha
- Department of Medical Electronics, BMS College of Engineering, Bangalore, India
| | - Chaitra V Hiremath
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Arpitha Jacob
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Shivarama Varambally
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Muralidharan Kesavan
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | | | - Shyam V Rao
- Department of Medical Electronics, BMS College of Engineering, Bangalore, India.,University Eye Clinic Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Carroll A B Webers
- University Eye Clinic Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Tos T J M Berendschot
- University Eye Clinic Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Naren P Rao
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
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21
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Mustafin RN, Kazantseva AV, Enikeeva RF, Davydova YD, Malykh SB, Viktorov VV, Khusnutdinova EK. Epigenetics of suicidal behavior. Vavilovskii Zhurnal Genet Selektsii 2019. [DOI: 10.18699/vj19.531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Suicide is the second leading cause of death among young people and therefore being a serious global problem worldwide. The study of genetic and epigenetic factors in the development of suicidal behavior plays an important role in the development of advanced methods of diagnosis and treatment of this pathology. The role of hereditary factors in the development of suicidal behavior is estimated at 30–55 %, with a pronounced comorbidity with other psychopathologies. The study of genetic liability to suicidal behavior is based on molecular-genetic methods including association and linkage analyses, chip gene expression arrays, and genome-wide association studies. Published data identified multiple genes including those involved in the functioning of serotonergic (SLC6A4, TPH, 5-HT1A), hypothalamic-pituitary-adrenal systems (FKBP5) and polyamines (SAT and OATL1) associated with suicidal behavior. However, the diversity of interacting genetic loci complicates the interpretation of the development of a complex phenotype of pathology and prevents the association from being detected. To solve this problem and interpret the missing relationship between the environment and the genome, promising results were obtained from a study of epigenetic factors, which affected the expression of a number of candidate genes involved in brain functioning in suicidal behavior. The analysis of a brain obtained from suicide victims, representing a unique tool for the analysis of modified genomic processes, revealed a wide range of reprogramming patterns of DNA methylation in promoters of the genes of polyamine (OAZ1, OAZ2, AMD1, ARG2, SKA2), serotonergic (SLC6A4) and GABAergic (GABRA1) systems, HPA-axis (GR, NR3C1), tyrosine kinase (TrkB) receptors, brain-derived neurotrophic factor (BDNF). The role of histone modifications in distinct genes (Cx30, Cx43, TrkB.T1) and the expression of specific long noncoding RNAs and microRNAs in the development of suicidal behavior, which is promising for the development of diagnostic algorithms and target therapy, is discussed.
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Affiliation(s)
- R. N. Mustafin
- Bashkir State Medical University;
Bashkir State University
| | - A. V. Kazantseva
- Institute of Biochemistry and Genetics – Subdivision of the Ufa Federal Research Centre, RAS
| | - R. F. Enikeeva
- Bashkir State University;
Institute of Biochemistry and Genetics – Subdivision of the Ufa Federal Research Centre, RAS
| | - Yu. D. Davydova
- Institute of Biochemistry and Genetics – Subdivision of the Ufa Federal Research Centre, RAS
| | - S. B. Malykh
- Psychological Institute of the Russian Academy of Education
| | | | - E. K. Khusnutdinova
- Bashkir State Medical University;
Bashkir State University;
Institute of Biochemistry and Genetics – Subdivision of the Ufa Federal Research Centre, RAS
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22
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Fransquet PD, Wrigglesworth J, Woods RL, Ernst ME, Ryan J. The epigenetic clock as a predictor of disease and mortality risk: a systematic review and meta-analysis. Clin Epigenetics 2019; 11:62. [PMID: 30975202 PMCID: PMC6458841 DOI: 10.1186/s13148-019-0656-7] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 03/25/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Ageing is one of the principal risk factors for many chronic diseases. However, there is considerable between-person variation in the rate of ageing and individual differences in their susceptibility to disease and death. Epigenetic mechanisms may play a role in human ageing, and DNA methylation age biomarkers may be good predictors of age-related diseases and mortality risk. The aims of this systematic review were to identify and synthesise the evidence for an association between peripherally measured DNA methylation age and longevity, age-related disease, and mortality risk. METHODS A systematic search was conducted in line with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Using relevant search terms, MEDLINE, Embase, Cochrane Central Register of Controlled Trials, and PsychINFO databases were searched to identify articles meeting the inclusion criteria. Studies were assessed for bias using Joanna Briggs Institute critical appraisal checklists. Data was extracted from studies measuring age acceleration as a predictor of age-related diseases, mortality or longevity, and the findings for similar outcomes compared. Using Review Manager 5.3 software, two meta-analyses (one per epigenetic clock) were conducted on studies measuring all-cause mortality. RESULTS Twenty-three relevant articles were identified, including a total of 41,607 participants. Four studies focused on ageing and longevity, 11 on age-related disease (cancer, cardiovascular disease, and dementia), and 11 on mortality. There was some, although inconsistent, evidence for an association between increased DNA methylation age and risk of disease. Meta-analyses indicated that each 5-year increase in DNA methylation age was associated an 8 to 15% increased risk of mortality. CONCLUSION Due to the small number of studies and heterogeneity in study design and outcomes, the association between DNA methylation age and age-related disease and longevity is inconclusive. Increased epigenetic age was associated with mortality risk, but positive publication bias needs to be considered. Further research is needed to determine the extent to which DNA methylation age can be used as a clinical biomarker.
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Affiliation(s)
- Peter D Fransquet
- Department of Epidemiology and Preventive Medicine, Monash University, ASPREE, Level 5, The Alfred Centre, 99 Commercial Road, Melbourne, Victoria, 3004, Australia.,Disease Epigenetics, Murdoch Childrens Research Institute, The University of Melbourne, Parkville, Victoria, 3052, Australia
| | - Jo Wrigglesworth
- Department of Epidemiology and Preventive Medicine, Monash University, ASPREE, Level 5, The Alfred Centre, 99 Commercial Road, Melbourne, Victoria, 3004, Australia
| | - Robyn L Woods
- Department of Epidemiology and Preventive Medicine, Monash University, ASPREE, Level 5, The Alfred Centre, 99 Commercial Road, Melbourne, Victoria, 3004, Australia
| | - Michael E Ernst
- Department of Pharmacy Practice and Science, College of Pharmacy, The University of Iowa, Iowa City, IA, USA.,Department of Family Medicine, Carver College of Medicine, The University of Iowa, Iowa City, IA, USA
| | - Joanne Ryan
- Department of Epidemiology and Preventive Medicine, Monash University, ASPREE, Level 5, The Alfred Centre, 99 Commercial Road, Melbourne, Victoria, 3004, Australia. .,Disease Epigenetics, Murdoch Childrens Research Institute, The University of Melbourne, Parkville, Victoria, 3052, Australia. .,INSERM, U1061, Neuropsychiatrie, Recherche Clinique et Epidémiologique, Neuropsychiatry: Research Epidemiological and Clinic, Université Montpellier, 34000, Montpellier, France.
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23
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Levey DF, Polimanti R, Cheng Z, Zhou H, Nuñez YZ, Jain S, He F, Sun X, Ursano RJ, Kessler RC, Smoller JW, Stein MB, Kranzler HR, Gelernter J. Genetic associations with suicide attempt severity and genetic overlap with major depression. Transl Psychiatry 2019; 9:22. [PMID: 30655502 PMCID: PMC6336846 DOI: 10.1038/s41398-018-0340-2] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Accepted: 11/13/2018] [Indexed: 11/09/2022] Open
Abstract
In 2015, ~800,000 people died by suicide worldwide. For every death by suicide there are as many as 25 suicide attempts, which can result in serious injury even when not fatal. Despite this large impact on morbidity and mortality, the genetic influences on suicide attempt are poorly understood. We performed a genome-wide association study (GWAS) of severity of suicide attempts to investigate genetic influences. A discovery GWAS was performed in Yale-Penn sample cohorts of European Americans (EAs, n = 2,439) and African Americans (AAs, n = 3,881). We found one genome-wide significant (GWS) signal in EAs near the gene LDHB (rs1677091, p = 1.07 × 10-8) and three GWS associations in AAs: ARNTL2 on chromosome 12 (rs683813, p = 2.07 × 10-8), FAH on chromosome 15 (rs72740082, p = 2.36 × 10-8), and on chromosome 18 (rs11876255, p = 4.61 × 10-8) in the Yale-Penn discovery sample. We conducted a limited replication analysis in the completely independent Army-STARRS cohorts. rs1677091 replicated in Latinos (LAT, p = 6.52 × 10-3). A variant in LD with FAH rs72740082 (rs72740088; r2 = 0.68) was replicated in AAs (STARRS AA p = 5.23 × 10-3; AA meta, 1.51 × 10-9). When combined for a trans-population meta-analysis, the final sample size included n = 20,153 individuals. Finally, we found significant genetic overlap with major depressive disorder (MDD) using polygenic risk scores from a large GWAS (r2 = 0.007, p = 6.42 × 10-5). To our knowledge, this is the first GWAS of suicide attempt severity. We identified GWS associations near genes involved in anaerobic energy production (LDHB), circadian clock regulation (ARNTL2), and catabolism of tyrosine (FAH). These findings provide evidence of genetic risk factors for suicide attempt severity, providing new information regarding the molecular mechanisms involved.
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Affiliation(s)
- Daniel F. Levey
- 0000000419368710grid.47100.32Division of Human Genetics, Department of Psychiatry, Yale University School of Medicine, New Haven, CT USA ,Department of Psychiatry, Veterans Affairs Connecticut Healthcare Center, West Haven, CT USA
| | - Renato Polimanti
- 0000000419368710grid.47100.32Division of Human Genetics, Department of Psychiatry, Yale University School of Medicine, New Haven, CT USA ,Department of Psychiatry, Veterans Affairs Connecticut Healthcare Center, West Haven, CT USA
| | - Zhongshan Cheng
- 0000000419368710grid.47100.32Division of Human Genetics, Department of Psychiatry, Yale University School of Medicine, New Haven, CT USA ,Department of Psychiatry, Veterans Affairs Connecticut Healthcare Center, West Haven, CT USA
| | - Hang Zhou
- 0000000419368710grid.47100.32Division of Human Genetics, Department of Psychiatry, Yale University School of Medicine, New Haven, CT USA ,Department of Psychiatry, Veterans Affairs Connecticut Healthcare Center, West Haven, CT USA
| | - Yaira Z. Nuñez
- 0000000419368710grid.47100.32Division of Human Genetics, Department of Psychiatry, Yale University School of Medicine, New Haven, CT USA ,Department of Psychiatry, Veterans Affairs Connecticut Healthcare Center, West Haven, CT USA
| | - Sonia Jain
- 0000 0001 2107 4242grid.266100.3Department of Family Medicine and Public Health, University of California San Diego, La Jolla, CA USA
| | - Feng He
- 0000 0001 2107 4242grid.266100.3Department of Family Medicine and Public Health, University of California San Diego, La Jolla, CA USA
| | - Xiaoying Sun
- 0000 0001 2107 4242grid.266100.3Department of Family Medicine and Public Health, University of California San Diego, La Jolla, CA USA
| | - Robert J. Ursano
- 0000 0001 0421 5525grid.265436.0Uniformed Services University of the Health Sciences, Bethesda, MD USA
| | - Ronald C. Kessler
- 000000041936754Xgrid.38142.3cDepartment of Health Care Policy, Harvard Medical School, Boston, MA USA
| | - Jordan W. Smoller
- 000000041936754Xgrid.38142.3cDepartment of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA USA ,0000 0004 0386 9924grid.32224.35Psychiatric and Neurodevelopmental Genetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA USA ,grid.66859.34Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA USA
| | - Murray B. Stein
- 0000 0001 2107 4242grid.266100.3Department of Family Medicine and Public Health, University of California San Diego, La Jolla, CA USA ,0000 0001 2107 4242grid.266100.3Department of Psychiatry, University of California San Diego, La Jolla, CA USA ,0000 0004 0419 2708grid.410371.0VA San Diego Healthcare System, San Diego, CA USA
| | - Henry R. Kranzler
- 0000 0004 1936 8972grid.25879.31Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA USA ,0000 0004 0420 350Xgrid.410355.6Veterans Integrated Service Network 4 Mental Illness Research, Education and Clinical Center, Crescenz Veterans Affairs Medical Center, Philadelphia, PA USA
| | - Joel Gelernter
- Division of Human Genetics, Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA. .,Department of Psychiatry, Veterans Affairs Connecticut Healthcare Center, West Haven, CT, USA. .,Department of Genetics, Yale University School of Medicine, New Haven, CT, USA. .,Department of Neuroscience, Yale University School of Medicine, New Haven, CT, USA.
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24
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Nwanaji-Enwerem JC, Weisskopf MG, Baccarelli AA. Multi-tissue DNA methylation age: Molecular relationships and perspectives for advancing biomarker utility. Ageing Res Rev 2018; 45:15-23. [PMID: 29698722 PMCID: PMC6047923 DOI: 10.1016/j.arr.2018.04.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 03/29/2018] [Accepted: 04/18/2018] [Indexed: 12/31/2022]
Abstract
The multi-tissue DNA methylation estimator of chronological age (DNAm-age) has been associated with a wide range of exposures and health outcomes. Still, it is unclear how DNAm-age can have such broad relationships and how it can be best utilized as a biomarker. Understanding DNAm-age's molecular relationships is a promising approach to address this critical knowledge gap. In this review, we discuss the existing literature regarding DNAm-age's molecular relationships in six major categories: animal model systems, cancer processes, cellular aging processes, immune system processes, metabolic processes, and nucleic acid processes. We also present perspectives regarding the future of DNAm-age research, including the need to translate a greater number of ongoing research efforts to experimental and animal model systems.
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Affiliation(s)
- Jamaji C Nwanaji-Enwerem
- Department of Environmental Health, Harvard T.H. Chan School of Public Health and MD-PhD Program, Harvard Medical School, Boston, MA, USA.
| | - Marc G Weisskopf
- Department of Environmental Health and Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Andrea A Baccarelli
- Department of Environmental Health Sciences, Columbia Mailman School of Public Health, New York, NY, USA
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