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Arat Çelik HE, Yılmaz S, Akşahin İC, Kök Kendirlioğlu B, Çörekli E, Dal Bekar NE, Çelik ÖF, Yorguner N, Targıtay Öztürk B, İşlekel H, Özerdem A, Akan P, Ceylan D, Tuna G. Oxidatively-induced DNA base damage and base excision repair abnormalities in siblings of individuals with bipolar disorder DNA damage and repair in bipolar disorder. Transl Psychiatry 2024; 14:207. [PMID: 38789433 PMCID: PMC11126633 DOI: 10.1038/s41398-024-02901-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 04/01/2024] [Accepted: 04/05/2024] [Indexed: 05/26/2024] Open
Abstract
Previous evidence suggests elevated levels of oxidatively-induced DNA damage, particularly 8-hydroxy-2'-deoxyguanosine (8-OH-dG), and abnormalities in the repair of 8-OH-dG by the base excision repair (BER) in bipolar disorder (BD). However, the genetic disposition of these abnormalities remains unknown. In this study, we aimed to investigate the levels of oxidatively-induced DNA damage and BER mechanisms in individuals with BD and their siblings, as compared to healthy controls (HCs). 46 individuals with BD, 41 siblings of individuals with BD, and 51 HCs were included in the study. Liquid chromatography-tandem mass spectrometry was employed to evaluate the levels of 8-OH-dG in urine, which were then normalized based on urine creatinine levels. The real-time-polymerase chain reaction was used to measure the expression levels of 8-oxoguanine DNA glycosylase 1 (OGG1), apurinic/apyrimidinic endonuclease 1 (APE1), poly ADP-ribose polymerase 1 (PARP1), and DNA polymerase beta (POLβ). The levels of 8-OH-dG were found to be elevated in both individuals with BD and their siblings when compared to the HCs. The OGG1 and APE1 expressions were downregulated, while POLβ expressions were upregulated in both the patient and sibling groups compared to the HCs. Age, smoking status, and the number of depressive episodes had an impact on APE1 expression levels in the patient group while body mass index, smoking status, and past psychiatric history had an impact on 8-OH-dG levels in siblings. Both individuals with BD and unaffected siblings presented similar abnormalities regarding oxidatively-induced DNA damage and BER, suggesting a link between abnormalities in DNA damage/BER mechanisms and familial susceptibility to BD. Our findings suggest that targeting the oxidatively-induced DNA damage and BER pathway could offer promising therapeutic strategies for reducing the risk of age-related diseases and comorbidities in individuals with a genetic predisposition to BD.
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Affiliation(s)
| | - Selda Yılmaz
- Department of Molecular Medicine, Institute of Health Sciences, Dokuz Eylul University, Izmir, Turkey
| | - İzel Cemre Akşahin
- Graduate School of Health Sciences, Koc University, Istanbul, Turkey
- Research Center for Translational Medicine (KUTTAM), School of Medicine, Koc University, Istanbul, Turkey
| | | | - Esma Çörekli
- Department of Psychiatry, School of Medicine, Maltepe University, Istanbul, Turkey
| | - Nazlı Ecem Dal Bekar
- Chair of Proteomics and Bioanalytics, School of Life Sciences, Technical University of Munich, Munich, Germany
| | - Ömer Faruk Çelik
- Department of Medical Biochemistry, Sancaktepe Sehit Prof. Dr. Ilhan Varank Training and Research Hospital, Istanbul, Turkey
| | - Neşe Yorguner
- Department of Psychiatry, School of Medicine, Marmara University, Istanbul, Turkey
| | | | - Hüray İşlekel
- Department of Molecular Medicine, Institute of Health Sciences, Dokuz Eylul University, Izmir, Turkey
- Department of Medical Biochemistry, School of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Ayşegül Özerdem
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | - Pınar Akan
- Department of Neuroscience, Institute of Health Sciences, Dokuz Eylul University, Izmir, Turkey
- BioIzmir - Izmir Health Technologies Development and Accelerator Research and Application Center, Dokuz Eylul University, Izmir, Turkey
| | - Deniz Ceylan
- Research Center for Translational Medicine (KUTTAM), School of Medicine, Koc University, Istanbul, Turkey.
- Department of Psychiatry, School of Medicine, Koc University, Istanbul, Turkey.
| | - Gamze Tuna
- Department of Molecular Medicine, Institute of Health Sciences, Dokuz Eylul University, Izmir, Turkey
- BioIzmir - Izmir Health Technologies Development and Accelerator Research and Application Center, Dokuz Eylul University, Izmir, Turkey
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Coello K, Mäkinen IJO, Kjærstad HL, Faurholt-Jepsen M, Miskowiak KW, Poulsen HE, Vinberg M, Kessing LV. Oxidation of DNA and RNA in young patients with newly diagnosed bipolar disorder and relatives. Transl Psychiatry 2024; 14:81. [PMID: 38331875 PMCID: PMC10853262 DOI: 10.1038/s41398-024-02772-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 01/05/2024] [Accepted: 01/10/2024] [Indexed: 02/10/2024] Open
Abstract
Excessive oxidative stress-generated nucleoside damage seems to play a key role in bipolar disorder (BD) and may present a trait phenomenon associated with familial risk and is one of the putative mechanisms explaining accelerated atherosclerosis and premature cardiovascular diseases (CVD) in younger patients with BD. However, oxidative stress-generated nucleoside damage has not been studied in young BD patients and their unaffected relatives (UR). Therefore, we compared oxidative stress-generated damage to DNA and RNA in young patients newly diagnosed with BD, UR, and healthy control individuals (HC). Systemic oxidative stress-generated DNA and RNA damage levels were compared by analyzing urinary levels of 8-oxo-7,8-dihydro-2'-deoxyguanosine and 8-oxo-7,8-dihydroguanosine in participants aged 15-25 years, including 133 patients newly diagnosed with BD, 57 UR, and 83 HC. Compared with HC, damage to DNA was 21.8% higher in BD patients (B = 1.218, 95% CI = 1.111-1.335, p = <0.001) and 22.5% higher in UR (B = 1.225, 95% CI = 1.090-1.377, p = <0.002), while damage to RNA was 14.8% higher in BD patients (B = 1.148, 95% CI = 1.082-1.219, p = <0.001) and 14.0% higher in UR (B = 1.140, 95% CI = 1.055-1.230, p = < 0.001) in models adjusted for sex and age after correction for multiple comparison. Levels did not differ between patients with BD and UR. Our findings support higher oxidative stress-generated nucleoside damage being a trait phenomenon in BD associated with familial risk and highlight the importance of early diagnosis and treatment to prevent illness progression and development of premature CVD.
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Affiliation(s)
- Klara Coello
- Copenhagen Affective Disorders Research Centre (CADIC), Psychiatric Center Copenhagen, Copenhagen University Hospital Frederiksberg, Copenhagen, Denmark.
| | - Ilari Jaakko Olavi Mäkinen
- Copenhagen Affective Disorders Research Centre (CADIC), Psychiatric Center Copenhagen, Copenhagen University Hospital Frederiksberg, Copenhagen, Denmark
- University of Copenhagen, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Hanne Lie Kjærstad
- Copenhagen Affective Disorders Research Centre (CADIC), Psychiatric Center Copenhagen, Copenhagen University Hospital Frederiksberg, Copenhagen, Denmark
| | - Maria Faurholt-Jepsen
- Copenhagen Affective Disorders Research Centre (CADIC), Psychiatric Center Copenhagen, Copenhagen University Hospital Frederiksberg, Copenhagen, Denmark
- University of Copenhagen, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Kamilla Woznica Miskowiak
- Copenhagen Affective Disorders Research Centre (CADIC), Psychiatric Center Copenhagen, Copenhagen University Hospital Frederiksberg, Copenhagen, Denmark
- University of Copenhagen, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Henrik Enghusen Poulsen
- Copenhagen Affective Disorders Research Centre (CADIC), Psychiatric Center Copenhagen, Copenhagen University Hospital Frederiksberg, Copenhagen, Denmark
- University of Copenhagen, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Department of Endocrinology, Copenhagen University Hospital Bispebjerg Frederiksberg, Copenhagen, Denmark
- Department of Cardiology, Copenhagen University Hospital North Zealand Hillerød, Hillerød, Denmark
- Research Unit, Copenhagen University Hospital North Zealand Hillerød, Hillerød, Denmark
| | - Maj Vinberg
- Copenhagen Affective Disorders Research Centre (CADIC), Psychiatric Center Copenhagen, Copenhagen University Hospital Frederiksberg, Copenhagen, Denmark
- University of Copenhagen, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Psychiatric Research Unit, Psychiatric Centre North Zealand, Copenhagen University Hospital, Hillerød, Denmark
| | - Lars Vedel Kessing
- Copenhagen Affective Disorders Research Centre (CADIC), Psychiatric Center Copenhagen, Copenhagen University Hospital Frederiksberg, Copenhagen, Denmark
- University of Copenhagen, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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Ceylan D, Arat-Çelik HE, Aksahin IC. Integrating mitoepigenetics into research in mood disorders: a state-of-the-art review. Front Physiol 2024; 15:1338544. [PMID: 38410811 PMCID: PMC10895490 DOI: 10.3389/fphys.2024.1338544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/24/2024] [Indexed: 02/28/2024] Open
Abstract
Mood disorders, including major depressive disorder and bipolar disorder, are highly prevalent and stand among the leading causes of disability. Despite the largely elusive nature of the molecular mechanisms underpinning these disorders, two pivotal contributors-mitochondrial dysfunctions and epigenetic alterations-have emerged as significant players in their pathogenesis. This state-of-the-art review aims to present existing data on epigenetic alterations in the mitochondrial genome in mood disorders, laying the groundwork for future research into their pathogenesis. Associations between abnormalities in mitochondrial function and mood disorders have been observed, with evidence pointing to notable changes in mitochondrial DNA (mtDNA). These changes encompass variations in copy number and oxidative damage. However, information on additional epigenetic alterations in the mitochondrial genome remains limited. Recent studies have delved into alterations in mtDNA and regulations in the mitochondrial genome, giving rise to the burgeoning field of mitochondrial epigenetics. Mitochondrial epigenetics encompasses three main categories of modifications: mtDNA methylation/hydroxymethylation, modifications of mitochondrial nucleoids, and mitochondrial RNA alterations. The epigenetic modulation of mitochondrial nucleoids, lacking histones, may impact mtDNA function. Additionally, mitochondrial RNAs, including non-coding RNAs, present a complex landscape influencing interactions between the mitochondria and the nucleus. The exploration of mitochondrial epigenetics offers valuable perspectives on how these alterations impact neurodegenerative diseases, presenting an intriguing avenue for research on mood disorders. Investigations into post-translational modifications and the role of mitochondrial non-coding RNAs hold promise to unravel the dynamics of mitoepigenetics in mood disorders, providing crucial insights for future therapeutic interventions.
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Affiliation(s)
- Deniz Ceylan
- Department of Psychiatry, School of Medicine, Koç University, Istanbul, Türkiye
- Koç University Research Center for Translational Medicine (KUTTAM), Affective Laboratory, Istanbul, Türkiye
| | | | - Izel Cemre Aksahin
- Koç University Research Center for Translational Medicine (KUTTAM), Affective Laboratory, Istanbul, Türkiye
- Graduate School of Health Sciences, Koç University, Istanbul, Türkiye
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Ceylan D, Karacicek B, Tufekci KU, Aksahin IC, Senol SH, Genc S. Mitochondrial DNA oxidation, methylation, and copy number alterations in major and bipolar depression. Front Psychiatry 2023; 14:1304660. [PMID: 38161720 PMCID: PMC10755902 DOI: 10.3389/fpsyt.2023.1304660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 11/20/2023] [Indexed: 01/03/2024] Open
Abstract
Background Mood disorders are common disabling psychiatric disorders caused by both genetic and environmental factors. Mitochondrial DNA (mtDNA) modifications and epigenetics are promising areas of research in depression since mitochondrial dysfunction has been associated with depression. In this study we aimed to investigate the mtDNA changes in depressive disorder (MDD) and bipolar disorder (BD). Methods Displacement loop methylation (D-loop-met), relative mtDNA copy number (mtDNA-cn) and mtDNA oxidation (mtDNA-oxi) were investigated in DNA samples of individuals with MDD (n = 34), BD (n = 23), and healthy controls (HC; n = 40) using the Real-Time Polymerase Chain Reaction (RT-PCR). Blood samples were obtained from a subset of individuals with MDD (n = 15) during a depressive episode (baseline) and after remission (8th week). Results The study groups exhibited significant differences in D-loop-met (p = 0.020), while relative mtDNA-cn and mtDNA-oxi showed comparable results. During the remission phase (8th week), there were lower levels of relative mtDNA-cn (Z = -2.783, p = 0.005) and D-loop-met (Z = -3.180, p = 0.001) compared to the acute MDD baseline, with no significant change in mtDNA-oxi levels (Z = -1.193, p = 0.233). Conclusion Our findings indicate significantly increased D-loop methylation in MDD compared to BD and HCs, suggesting distinct mtDNA modifications in these conditions. Moreover, the observed alterations in relative mtDNA-cn and D-loop-met during remission suggest a potential role of mtDNA alterations in the pathophysiology of MDD. Future studies may provide valuable insights into the dynamics of mtDNA modifications in both disorders and their response to treatment.
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Affiliation(s)
- Deniz Ceylan
- Affective Laboratory, Koç University Research Center for Translational Medicine, Istanbul, Türkiye
- Department of Psychiatry, Koç University Hospital, Istanbul, Türkiye
| | - Bilge Karacicek
- Izmir Biomedicine and Genome Center, Genç Lab, Izmir, Türkiye
| | - Kemal Ugur Tufekci
- Brain and Neuroscience Research and Application Center, Izmir Demokrasi University, Izmir, Türkiye
- Vocational School of Health Services, Izmir Democracy University, Izmir, Türkiye
| | - Izel Cemre Aksahin
- Affective Laboratory, Koç University Research Center for Translational Medicine, Istanbul, Türkiye
- Graduate School of Health Sciences, Koç University, Istanbul, Türkiye
| | - Sevin Hun Senol
- Department of Psychiatry, Koç University Hospital, Istanbul, Türkiye
| | - Sermin Genc
- Izmir Biomedicine and Genome Center, Genç Lab, Izmir, Türkiye
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Peng P, He M, Fang W, Lai M, Xiao F, He W, Xiao H, Wei Q. Plasma 8-OHdG act as a biomarker for steroid-induced osteonecrosis of the femoral head. BMC Musculoskelet Disord 2023; 24:808. [PMID: 37828532 PMCID: PMC10568778 DOI: 10.1186/s12891-023-06804-0] [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: 03/18/2023] [Accepted: 08/16/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND Oxidative stress was closely related to the occurrence and development of Steroid-induced osteonecrosis of the femoral head (SIONFH). 8-hydroxy-2'-deoxyguanosine (8-OHdG) is a important index of oxidative stress. The aim of this study is to investigate the role of 8-OHdG in the development of SIONFH. METHODS From May 2021 and November 2021, 33 patients diagnosed with SIONFH and 26 healthy controls were recruited in this study. Assessment included the radiography and pathology evaluation of clinical bone tissue, expression position and level of 8-OHdG, level of plasma 8-OHdG, as well as the receiver operating characteristic (ROC) curve. RESULTS We observed that expression levels of 8-OHdG in bone samples decreased with Association Research Circulation Osseous (ARCO) stages. Plasma 8-OHdG levels were significantly increased in the SIONFH group compared to the healthy control group. Plasma 8-OHdG level of pre-collapse patients was higher than that of post-collapse patients, the decreased plasma 8-OHdG level was related to higher ARCO stages. CONCLUSION Plasma 8-OHdG may represent potential biomarkers during SIONFH at different stages. Higher plasma 8-OHdG levels indicated early stage of SIONFH. The current study provided new clues for early diagnosis and treatment for SIONFH.
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Affiliation(s)
- Peng Peng
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Mincong He
- Guangdong Research Institute for Orthopedics and Traumatology of Chinese Medicine, Guangzhou, 510378, China
- Department of Orthopaedics, The Third Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, 510378, China
| | - Weihua Fang
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Mengqi Lai
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Fangjun Xiao
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Wei He
- Guangdong Research Institute for Orthopedics and Traumatology of Chinese Medicine, Guangzhou, 510378, China
- Department of Orthopaedics, The Third Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, 510378, China
| | - Huan Xiao
- Department of Orthopedics, Bijie Traditional Chinese Medicine Hospital, Bijie, 551700, China.
| | - Qiushi Wei
- Guangdong Research Institute for Orthopedics and Traumatology of Chinese Medicine, Guangzhou, 510378, China.
- Department of Orthopaedics, The Third Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, 510378, China.
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