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Chen L, Wu K, He J, Hou J, Zhang Y, Liu L, Wang J, Xia Z. Circadian Regulation of the Lactate Metabolic Kinetics in Mice Using the [ 1H- 13C]-NMR Technique. Mol Neurobiol 2024; 61:5802-5813. [PMID: 38231323 DOI: 10.1007/s12035-024-03927-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 01/04/2024] [Indexed: 01/18/2024]
Abstract
Lactate is not only the energy substrate of neural cells, but also an important signal molecule in brain. In modern societies, disturbed circadian rhythms pose a global challenge. Therefore, exploring the influence of circadian period on lactate and its metabolic kinetics is essential for the advancement of neuroscientific research. In the present study, the different groups of mice (L: 8:00 a.m.; D: 20:00 p.m.; SD: 20:00 p.m. with 12 h acute sleep deprivation) were infused with [3-13C] lactate through the lateral tail vein for a duration of 2 min. After 30-min lactate metabolism, the animals were euthanized and the tissues of brain and liver were obtained and extracted, and then, the [1H-13C] NMR technology was employed to investigate the kinetic information of lactate metabolism in different brain regions and liver to detect the enrichment of various metabolic kinetic information. Results revealed the fluctuating lactate concentrations in the brain throughout the day, with lower levels during light periods and higher levels during dark periods. Most metabolites displayed strong sensitivity to circadian rhythm, exhibiting significant day-night variations. Conversely, only a few metabolites showed changes after acute sleep deprivation, primarily in the temporal brain region. Interestingly, in contrast to brain lactate metabolism, liver lactate metabolism exhibited a significant increase following acute sleep deprivation. This study explored the kinetics of lactate metabolism, hinted at potential clinical implications for disorders involving circadian rhythm disturbances, and providing a new research basis for clinical exploration of brain and liver lactate metabolism.
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Affiliation(s)
- Lili Chen
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, People's Republic of China
| | - Kefan Wu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, People's Republic of China
| | - Jingang He
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences-Wuhan National Laboratory for Optoelectronics, Wuhan, Hubei, 430071, People's Republic of China
| | - Jiabao Hou
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, People's Republic of China
| | - Yuan Zhang
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, People's Republic of China
| | - Lian Liu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, People's Republic of China
| | - Jie Wang
- Songjiang Hospital and Songjiang Research Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, 201600, People's Republic of China.
- Institute of Neuroscience and Brain Diseases; Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, 441021, People's Republic of China.
| | - Zhongyuan Xia
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, People's Republic of China.
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Tan X, Zhang J, Dong J, Huang M, Zhou Z, Wang D. Novel Insights into the Circadian Rhythms Based on Long Noncoding and Circular RNA Profiling. Int J Mol Sci 2024; 25:1161. [PMID: 38256234 PMCID: PMC10816401 DOI: 10.3390/ijms25021161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/07/2024] [Accepted: 01/12/2024] [Indexed: 01/24/2024] Open
Abstract
Circadian rhythm disorders pose major risks to human health and animal production activity, and the hypothalamus is the center of circadian rhythm regulation. However, the epigenetic regulation of circadian rhythm based on farm animal models has been poorly investigated. We collected chicken hypothalamus samples at seven time points in one light/dark cycle and performed long noncoding RNA (lncRNA), circular RNA (circRNA), and mRNA sequencing to detect biomarkers associated with circadian rhythm. We enhanced the comprehensive expression profiling of ncRNAs and mRNAs in the hypothalamus and found two gene sets (circadian rhythm and retinal metabolism) associated with the light/dark cycle. Noncoding RNA networks with circadian expression patterns were identified by differential expression and circadian analysis was provided that included 38 lncRNAs, 15 circRNAs, and 200 candidate genes. Three lncRNAs (ENSGALT00000098661, ENSGALT00000100816, and MSTRG.16980.1) and one circRNA (novel_circ_010168) in the ncRNA-mRNA regulatory network were identified as key molecules influencing circadian rhythm by regulating AOX1 in retinal metabolism. These ncRNAs were predicted to be related to pernicious anemia, gonadal, eye disease and other disorders in humans. Together, the findings of this study provide insights into the epigenetic mechanisms of circadian rhythm and reveal AOX1 as a promising target of circadian rhythm regulation.
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Affiliation(s)
| | | | | | | | | | - Deqian Wang
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (X.T.)
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3
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Rajput P, Kumar D, Krishnamurthy S. Chronic exposure to dim artificial light disrupts the daily rhythm in mitochondrial respiration in mouse suprachiasmatic nucleus. Chronobiol Int 2023; 40:938-951. [PMID: 37483020 DOI: 10.1080/07420528.2023.2236708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 05/29/2023] [Accepted: 07/10/2023] [Indexed: 07/25/2023]
Abstract
Circadian rhythms of physiology, behavior, and metabolism have an endogenous 24 h period that synchronizes with environmental cycles of light/dark and food availability. Alterations in light cycles are stressful and disrupt such diurnal oscillations. Recently, we witnessed a sudden rise in studies describing the mechanisms behind the interaction between the key characteristics of mitochondrial functions, peripheral clocks, and stress responses. To our knowledge, there is no study in the suprachiasmatic nuclei (SCN) describing the dysregulated mitochondrial bioenergetics under abnormal lighting conditions, which is common in today's modern world. Thus, we aimed to investigate the existence of daily changes in mitochondrial bioenergetics (respiratory control rate, RCR), mitochondrial abundance (mtDNA/nDNA), plasma corticosterone, and to test whether disturbances in the lighting conditions might influence such rhythms. To confirm this, mice were sacrificed, mitochondria were isolated from the suprachiasmatic nuclei in the brain and blood was collected, every 3 h at various time points zeitgeber time/circadian time, (0, 3, 6, 9, 12, 15, 18, 21, and 24 h) under 12:12 h light-dark (LD, 150 lux L: 0 lux D) cycle and chronic artificial dim lighting (LL, 5 lux: 5lux) conditions, of a 24 h period, respectively. Our results demonstrate the existence of robust daily rhythmicity in RCR, mtDNA/nDNA and plasma CORT under a normal LD cycle. However, these rhythms were significantly disrupted and clock genes expressions were dysregulated under chronic dim LL. Furthermore, mitochondrial abundance was significantly reduced during LL compared to their numbers under LD cycle. Our data demonstrate that the circadian clock regulates mitochondrial functions (RCR, number), essential for accomplishing daily energy demands and supply by the SCN neurons. Abnormal light exposure dysregulates mitochondrial functions in the SCN and may alter metabolism, resulting in obesity, diabetes, and other metabolic disorders. Therefore, properly designing lighting conditions in workplaces is essential to mitigate the adverse consequences of light on humans.
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Affiliation(s)
- Prabha Rajput
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, (Banaras Hindu University), Varanasi, India
| | | | - Sairam Krishnamurthy
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, (Banaras Hindu University), Varanasi, India
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4
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Jin Z, Ji Y, Su W, Zhou L, Wu X, Gao L, Guo J, Liu Y, Zhang Y, Wen X, Xia ZY, Xia Z, Lei S. The role of circadian clock-controlled mitochondrial dynamics in diabetic cardiomyopathy. Front Immunol 2023; 14:1142512. [PMID: 37215098 PMCID: PMC10196400 DOI: 10.3389/fimmu.2023.1142512] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 04/24/2023] [Indexed: 05/24/2023] Open
Abstract
Diabetes mellitus is a metabolic disease with a high prevalence worldwide, and cardiovascular complications are the leading cause of mortality in patients with diabetes. Diabetic cardiomyopathy (DCM), which is prone to heart failure with preserved ejection fraction, is defined as a cardiac dysfunction without conventional cardiac risk factors such as coronary heart disease and hypertension. Mitochondria are the centers of energy metabolism that are very important for maintaining the function of the heart. They are highly dynamic in response to environmental changes through mitochondrial dynamics. The disruption of mitochondrial dynamics is closely related to the occurrence and development of DCM. Mitochondrial dynamics are controlled by circadian clock and show oscillation rhythm. This rhythm enables mitochondria to respond to changing energy demands in different environments, but it is disordered in diabetes. In this review, we summarize the significant role of circadian clock-controlled mitochondrial dynamics in the etiology of DCM and hope to play a certain enlightening role in the treatment of DCM.
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Affiliation(s)
- Zhenshuai Jin
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yanwei Ji
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wating Su
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Lu Zhou
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiaojing Wu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Lei Gao
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Junfan Guo
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yutong Liu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yuefu Zhang
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xinyu Wen
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhong-Yuan Xia
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhengyuan Xia
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao SAR, China
| | - Shaoqing Lei
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
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5
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Senesi P, Ferrulli A, Luzi L, Terruzzi I. Chrono-communication and cardiometabolic health: The intrinsic relationship and therapeutic nutritional promises. Front Endocrinol (Lausanne) 2022; 13:975509. [PMID: 36176473 PMCID: PMC9513421 DOI: 10.3389/fendo.2022.975509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 08/23/2022] [Indexed: 11/13/2022] Open
Abstract
Circadian rhythm, an innate 24-h biological clock, regulates several mammalian physiological activities anticipating daily environmental variations and optimizing available energetic resources. The circadian machinery is a complex neuronal and endocrinological network primarily organized into a central clock, suprachiasmatic nucleus (SCN), and peripheral clocks. Several small molecules generate daily circadian fluctuations ensuring inter-organ communication and coordination between external stimuli, i.e., light, food, and exercise, and body metabolism. As an orchestra, this complex network can be out of tone. Circadian disruption is often associated with obesity development and, above all, with diabetes and cardiovascular disease onset. Moreover, accumulating data highlight a bidirectional relationship between circadian misalignment and cardiometabolic disease severity. Food intake abnormalities, especially timing and composition of meal, are crucial cause of circadian disruption, but evidence from preclinical and clinical studies has shown that food could represent a unique therapeutic approach to promote circadian resynchronization. In this review, we briefly summarize the structure of circadian system and discuss the role playing by different molecules [from leptin to ghrelin, incretins, fibroblast growth factor 21 (FGF-21), growth differentiation factor 15 (GDF15)] to guarantee circadian homeostasis. Based on the recent data, we discuss the innovative nutritional interventions aimed at circadian re-synchronization and, consequently, improvement of cardiometabolic health.
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Affiliation(s)
- Pamela Senesi
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
- Department of Endocrinology, Nutrition and Metabolic Diseases, IRCCS MultiMedica, Milan, Italy
| | - Anna Ferrulli
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
- Department of Endocrinology, Nutrition and Metabolic Diseases, IRCCS MultiMedica, Milan, Italy
| | - Livio Luzi
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
- Department of Endocrinology, Nutrition and Metabolic Diseases, IRCCS MultiMedica, Milan, Italy
| | - Ileana Terruzzi
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
- Department of Endocrinology, Nutrition and Metabolic Diseases, IRCCS MultiMedica, Milan, Italy
- *Correspondence: Ileana Terruzzi,
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6
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Scaini G, Andrews T, Lima CNC, Benevenuto D, Streck EL, Quevedo J. Mitochondrial dysfunction as a critical event in the pathophysiology of bipolar disorder. Mitochondrion 2021; 57:23-36. [PMID: 33340709 PMCID: PMC10494232 DOI: 10.1016/j.mito.2020.12.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 11/18/2020] [Accepted: 12/10/2020] [Indexed: 01/02/2023]
Abstract
The understanding of the pathophysiology of bipolar disorder (BD) remains modest, despite recent advances in neurobiological research. The mitochondrial dysfunction hypothesis of bipolar disorder has been corroborated by several studies involving postmortem brain analysis, neuroimaging, and specific biomarkers in both rodent models and humans. Evidence suggests that BD might be related to abnormal mitochondrial morphology and dynamics, neuroimmune dysfunction, and atypical mitochondrial metabolism and oxidative stress pathways. Mitochondrial dysfunction in mood disorders is also associated with abnormal Ca2+ levels, glutamate excitotoxicity, an imbalance between pro- and antiapoptotic proteins towards apoptosis, abnormal gene expression of electron transport chain complexes, and decreased ATP synthesis. This paper aims to review and discuss the implications of mitochondrial dysfunction in BD etiology and to explore mitochondria as a potential target for novel therapeutic agents.
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Affiliation(s)
- Giselli Scaini
- Translational Psychiatry Program, Louis A. Faillace, MD, Department of Psychiatry and Behavioral Sciences at McGovern Medical School, The University of Texas Health Science Center at Houston (UT Health), Houston, TX, USA
| | - Taylor Andrews
- Translational Psychiatry Program, Louis A. Faillace, MD, Department of Psychiatry and Behavioral Sciences at McGovern Medical School, The University of Texas Health Science Center at Houston (UT Health), Houston, TX, USA
| | - Camila N C Lima
- Translational Psychiatry Program, Louis A. Faillace, MD, Department of Psychiatry and Behavioral Sciences at McGovern Medical School, The University of Texas Health Science Center at Houston (UT Health), Houston, TX, USA
| | - Deborah Benevenuto
- Translational Psychiatry Program, Louis A. Faillace, MD, Department of Psychiatry and Behavioral Sciences at McGovern Medical School, The University of Texas Health Science Center at Houston (UT Health), Houston, TX, USA
| | - Emilio L Streck
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, SC, Brazil
| | - João Quevedo
- Translational Psychiatry Program, Louis A. Faillace, MD, Department of Psychiatry and Behavioral Sciences at McGovern Medical School, The University of Texas Health Science Center at Houston (UT Health), Houston, TX, USA; Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, SC, Brazil; Center of Excellence on Mood Disorders, Louis A. Faillace, MD, Department of Psychiatry and Behavioral Sciences at McGovern Medical School, The University of Texas Health Science Center at Houston (UT Health), Houston, TX, USA; Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UT Health Graduate School of Biomedical Sciences, Houston, TX, USA.
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7
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Yuan Q, Chen M, Yang W, Xiao B. Circadian Rheb oscillation alters the dynamics of hepatic mTORC1 activity and mitochondrial morphology. FEBS Lett 2020; 595:360-369. [PMID: 33247956 DOI: 10.1002/1873-3468.14009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/06/2020] [Accepted: 11/13/2020] [Indexed: 02/05/2023]
Abstract
The morphological structure and metabolic activity of mitochondria are coordinately regulated by circadian mechanisms. However, the mechanistic interplay between circadian mechanisms and mitochondrial architecture remains poorly understood. Here, we demonstrate circadian rhythmicity of Rheb protein in liver, in line with that of Per2. Using genetic mouse models, we show that Rheb, a small GTPase that binds mTOR, is critical for circadian oscillation of mTORC1 activity in liver. Disruption of Rheb oscillation in hepatocytes by persistent expression of Rheb transgene interrupted mTORC1 oscillation. We further show that Rheb-regulated mTORC1 altered mitochondrial fission factor DRP1 in liver, leading to altered mitochondrial dynamics. Our results suggest that Rheb/mTORC1 regulated DRP1 oscillation involves ubiquitin-mediated proteolysis. This study identifies Rheb as a nodal point that couples circadian clock and mitochondrial architecture for optimal mitochondrial metabolism.
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Affiliation(s)
- Qiuyun Yuan
- Neuroscience & Metabolism Research, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Mina Chen
- Neuroscience & Metabolism Research, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Wanchun Yang
- Neuroscience & Metabolism Research, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Bo Xiao
- Department of Biology, Southern University of Science and Technology, Shenzhen, China
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8
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Sun Q, Yang Y, Wang Z, Yang X, Gao Y, Zhao Y, Ge W, Liu J, Xu X, Guan W, Weng D, Wang S, Wang J, Zhang J. PER1 interaction with GPX1 regulates metabolic homeostasis under oxidative stress. Redox Biol 2020; 37:101694. [PMID: 32896721 PMCID: PMC7484554 DOI: 10.1016/j.redox.2020.101694] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/29/2020] [Accepted: 08/15/2020] [Indexed: 02/07/2023] Open
Abstract
Metabolism serves mammalian feeding and active behavior, and is controlled by circadian clock. The molecular mechanism by which clock factors regulate metabolic homeostasis under oxidative stress is unclear. Here, we have characterized that the daily oxygen consumption rhythm was deregulated in Per1 deficient mice. Per1 deficiency impaired daily mitochondrial dynamics and deregulated cellular GPx-related ROS fluctuations in the peripheral organs. We identified that PER1 enhanced GPx activity through PER1/GPX1 interaction in cytoplasm, consequently improving the oxidative phosphorylation efficiency of mitochondria. Per1 expression was specifically elevated in the fasting peripheral organs for protecting mitochondrial from oxidation stress. These observations reveal that Per1-driven mitochondrial dynamics is a critical effector mechanism for the regulation of mitochondrial function in response to oxidation stress. PER1 regulates daily metabolic rhythm uncoupled from feeding oscillations. Per1 deficiency impairs mitochondrial dynamics and deregulates ROS fluctuations. PER1 interactions with GPX1 and increases mitochondrial ROS clearance. Fasting elevates Per1 expression to protect mitochondrial from oxidation stress.
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Affiliation(s)
- Qi Sun
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China; Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu, 233030, China
| | - Yunxia Yang
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Zhongqiu Wang
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China
| | - Xiao Yang
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Yan Gao
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Yang Zhao
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Wenhao Ge
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Junhao Liu
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Xi Xu
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Wei Guan
- The Second Hospital of Nanjing, Nanjing Medical University, Nanjing, 210003, China
| | - Dan Weng
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Shiming Wang
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Junsong Wang
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Jianfa Zhang
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, 210094, China.
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9
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Mansur RB, Lee Y, McIntyre RS, Brietzke E. What is bipolar disorder? A disease model of dysregulated energy expenditure. Neurosci Biobehav Rev 2020; 113:529-545. [PMID: 32305381 DOI: 10.1016/j.neubiorev.2020.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/30/2020] [Accepted: 04/05/2020] [Indexed: 12/24/2022]
Abstract
Advances in the understanding and management of bipolar disorder (BD) have been slow to emerge. Despite notable recent developments in neurosciences, our conceptualization of the nature of this mental disorder has not meaningfully progressed. One of the key reasons for this scenario is the continuing lack of a comprehensive disease model. Within the increasing complexity of modern research methods, there is a clear need for an overarching theoretical framework, in which findings are assimilated and predictions are generated. In this review and hypothesis article, we propose such a framework, one in which dysregulated energy expenditure is a primary, sufficient cause for BD. Our proposed model is centered on the disruption of the molecular and cellular network regulating energy production and expenditure, as well its potential secondary adaptations and compensatory mechanisms. We also focus on the putative longitudinal progression of this pathological process, considering its most likely periods for onset, such as critical periods that challenges energy homeostasis (e.g. neurodevelopment, social isolation), and the resulting short and long-term phenotypical manifestations.
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Affiliation(s)
- Rodrigo B Mansur
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
| | - Yena Lee
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Roger S McIntyre
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Elisa Brietzke
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada; Kingston General Hospital, Providence Care Hospital, Department of Psychiatry, Queen's University School of Medicine, Kingston, ON, Canada
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10
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Arafa K, Emara M. Insights About Circadian Clock and Molecular Pathogenesis in Gliomas. Front Oncol 2020; 10:199. [PMID: 32195174 PMCID: PMC7061216 DOI: 10.3389/fonc.2020.00199] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 02/05/2020] [Indexed: 12/15/2022] Open
Abstract
The circadian clock is an endogenous time-keeping system that has been discovered across kingdoms of life. It controls and coordinates metabolism, physiology, and behavior to adapt to variations within the day and the seasonal environmental cycles driven by earth rotation. In mammals, although circadian rhythm is controlled by a set of core clock genes that are present in both in suprachiasmatic nucleus (SCN) of the hypothalamus and peripheral tissues, the generation and control of the circadian rhythm at the cellular, tissue, and organism levels occurs in a hierarchal fashion. The SCN is central pacemaker comprising the principal circadian clock that synchronizes peripheral circadian clocks to their appropriate phase. Different epidemiological studies have shown that disruption of normal circadian rhythm is implicated in increasing the risk of developing cancers. In addition, deregulated expression of clock genes has been demonstrated in various types of cancer. These findings indicate a close association between circadian clock and cancer development and progression. Here, we review different evidences of this association in relation to molecular pathogenesis in gliomas.
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Affiliation(s)
| | - Marwan Emara
- Center for Aging and Associated Diseases, Zewail City of Science and Technology, Cairo, Egypt
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11
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Yamada Y, Prosser RA. Copper in the suprachiasmatic circadian clock: A possible link between multiple circadian oscillators. Eur J Neurosci 2018; 51:47-70. [PMID: 30269387 DOI: 10.1111/ejn.14181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 09/05/2018] [Accepted: 09/17/2018] [Indexed: 01/07/2023]
Abstract
The mammalian circadian clock in the suprachiasmatic nucleus (SCN) is very robust, able to coordinate our daily physiological and behavioral rhythms with exquisite accuracy. Simultaneously, the SCN clock is highly sensitive to environmental timing cues such as the solar cycle. This duality of resiliency and sensitivity may be sustained in part by a complex intertwining of three cellular oscillators: transcription/translation, metabolic/redox, and membrane excitability. We suggest here that one of the links connecting these oscillators may be forged from copper (Cu). Cellular Cu levels are highly regulated in the brain and peripherally, and Cu affects cellular metabolism, redox state, cell signaling, and transcription. We have shown that both Cu chelation and application induce nighttime phase shifts of the SCN clock in vitro and that these treatments affect glutamate, N-methyl-D-aspartate receptor, and associated signaling processes differently. More recently we found that Cu induces mitogen-activated protein kinase-dependent phase shifts, while the mechanisms by which Cu removal induces phase shifts remain unclear. Lastly, we have found that two Cu transporters are expressed in the SCN, and that one of these transporters (ATP7A) exhibits a day/night rhythm. Our results suggest that Cu homeostasis is tightly regulated in the SCN, and that changes in Cu levels may serve as a time cue for the circadian clock. We discuss these findings in light of the existing literature and current models of multiple coupled circadian oscillators in the SCN.
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Affiliation(s)
- Yukihiro Yamada
- Department of Biochemistry & Cellular and Molecular Biology, NeuroNET Research Center, University of Tennessee, Knoxville, Tennessee
| | - Rebecca A Prosser
- Department of Biochemistry & Cellular and Molecular Biology, NeuroNET Research Center, University of Tennessee, Knoxville, Tennessee
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12
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Schmitt K, Grimm A, Dallmann R, Oettinghaus B, Restelli LM, Witzig M, Ishihara N, Mihara K, Ripperger JA, Albrecht U, Frank S, Brown SA, Eckert A. Circadian Control of DRP1 Activity Regulates Mitochondrial Dynamics and Bioenergetics. Cell Metab 2018; 27:657-666.e5. [PMID: 29478834 DOI: 10.1016/j.cmet.2018.01.011] [Citation(s) in RCA: 188] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 01/06/2017] [Accepted: 01/19/2018] [Indexed: 01/20/2023]
Abstract
Mitochondrial fission-fusion dynamics and mitochondrial bioenergetics, including oxidative phosphorylation and generation of ATP, are strongly clock controlled. Here we show that these circadian oscillations depend on circadian modification of dynamin-related protein 1 (DRP1), a key mediator of mitochondrial fission. We used a combination of in vitro and in vivo models, including human skin fibroblasts and DRP1-deficient or clock-deficient mice, to show that these dynamics are clock controlled via circadian regulation of DRP1. Genetic or pharmacological abrogation of DRP1 activity abolished circadian network dynamics and mitochondrial respiratory activity and eliminated circadian ATP production. Pharmacological silencing of pathways regulating circadian metabolism and mitochondrial function (e.g., sirtuins, AMPK) also altered DRP1 phosphorylation, and abrogation of DRP1 activity impaired circadian function. Our findings provide new insight into the crosstalk between the mitochondrial network and circadian cycles.
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Affiliation(s)
- Karen Schmitt
- Neurobiology Lab for Brain Aging and Mental Health, Transfaculty Research Platform, Molecular & Cognitive Neuroscience, University of Basel, Basel, Switzerland; Psychiatric University Clinics, University of Basel, Basel, Switzerland
| | - Amandine Grimm
- Neurobiology Lab for Brain Aging and Mental Health, Transfaculty Research Platform, Molecular & Cognitive Neuroscience, University of Basel, Basel, Switzerland; Psychiatric University Clinics, University of Basel, Basel, Switzerland
| | - Robert Dallmann
- Chronobiology and Sleep Research Group, Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland
| | - Bjoern Oettinghaus
- Division of Neuropathology, Institute of Pathology, University Hospital Basel, Basel, Switzerland
| | - Lisa Michelle Restelli
- Division of Neuropathology, Institute of Pathology, University Hospital Basel, Basel, Switzerland
| | - Melissa Witzig
- Neurobiology Lab for Brain Aging and Mental Health, Transfaculty Research Platform, Molecular & Cognitive Neuroscience, University of Basel, Basel, Switzerland; Psychiatric University Clinics, University of Basel, Basel, Switzerland
| | - Naotada Ishihara
- Department of Protein Biochemistry, Institute of Life Science, Kurume University, Kurume 839-0864, Japan
| | - Katsuyoshi Mihara
- Department of Molecular Biology, Graduate School of Medical Science, Kyushu University, Fukuoka 812-8582, Japan
| | - Jürgen A Ripperger
- Department of Biology, Unit of Biochemistry, University of Fribourg, Fribourg, Switzerland
| | - Urs Albrecht
- Department of Biology, Unit of Biochemistry, University of Fribourg, Fribourg, Switzerland
| | - Stephan Frank
- Division of Neuropathology, Institute of Pathology, University Hospital Basel, Basel, Switzerland
| | - Steven A Brown
- Chronobiology and Sleep Research Group, Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland.
| | - Anne Eckert
- Neurobiology Lab for Brain Aging and Mental Health, Transfaculty Research Platform, Molecular & Cognitive Neuroscience, University of Basel, Basel, Switzerland; Psychiatric University Clinics, University of Basel, Basel, Switzerland.
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13
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Lechasseur A, Jubinville É, Routhier J, Bérubé JC, Hamel-Auger M, Talbot M, Lamothe J, Aubin S, Paré MÈ, Beaulieu MJ, Bossé Y, Duchaine C, Morissette MC. Exposure to electronic cigarette vapors affects pulmonary and systemic expression of circadian molecular clock genes. Physiol Rep 2017; 5:5/19/e13440. [PMID: 29038357 PMCID: PMC5641932 DOI: 10.14814/phy2.13440] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 08/09/2017] [Accepted: 08/14/2017] [Indexed: 01/28/2023] Open
Abstract
E‐cigarette use has exploded in the past years, especially among young adults and smokers desiring to quit. While concerns are mostly based on the presence of nicotine and flavors, pulmonary effects of propylene glycol and glycerol inhalation, the main solvents of e‐liquid have not been thoroughly investigated. In this preclinical study, mice were exposed 2 h daily for up to 8 weeks to vapors of propylene glycol and/or glycerol generated by an e‐cigarette. Lung transcriptome analysis revealed it affected the expression level of genes of the circadian molecular clock, despite causing no inflammatory response. Periodical sacrifices showed that the rhythmicity of these regulatory genes was indeed altered in the lungs, but also in the liver, kidney, skeletal muscle, and brain. E‐cigarette exposure also altered the expression of rhythmic genes (i.e., hspa1a and hspa1b), suggesting that alterations to the ‘clock genes’ could translate into systemic biological alterations. This study reveals that the major solvents used in e‐cigarettes propylene glycol and glycerol, not nicotine or flavors, have unsuspected effects on gene expression of the molecular clock that are to be taken seriously, especially considering the fundamental role of the circadian rhythm in health and disease.
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Affiliation(s)
- Ariane Lechasseur
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada.,Faculty of Medicine, Université Laval, Quebec City, Province of Quebec, Canada
| | - Éric Jubinville
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada.,Faculty of Medicine, Université Laval, Quebec City, Province of Quebec, Canada
| | - Joanie Routhier
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada.,Faculty of Medicine, Université Laval, Quebec City, Province of Quebec, Canada
| | - Jean-Christophe Bérubé
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada.,Faculty of Medicine, Université Laval, Quebec City, Province of Quebec, Canada
| | - Mélanie Hamel-Auger
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada.,Faculty of Medicine, Université Laval, Quebec City, Province of Quebec, Canada
| | - Maude Talbot
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada.,Faculty of Medicine, Université Laval, Quebec City, Province of Quebec, Canada
| | - Jennifer Lamothe
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada
| | - Sophie Aubin
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada
| | - Marie-Ève Paré
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada
| | - Marie-Josée Beaulieu
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada
| | - Yohan Bossé
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada.,Department of Molecular Medicine, Faculty of Medicine, Université Laval, Quebec City, Province of Quebec, Canada
| | - Caroline Duchaine
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada.,Department of Biochemistry, Microbiology and Bioinformatics, Faculty of Sciences and Engineering, Quebec City, Province of Quebec, Canada
| | - Mathieu C Morissette
- Quebec Heart and Lung Institute - Université Laval, Quebec City, Province of Quebec, Canada .,Department of Medicine, Faculty of Medicine, Université Laval, Quebec City, Province of Quebec, Canada
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14
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Manella G, Asher G. The Circadian Nature of Mitochondrial Biology. Front Endocrinol (Lausanne) 2016; 7:162. [PMID: 28066327 PMCID: PMC5165042 DOI: 10.3389/fendo.2016.00162] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 12/07/2016] [Indexed: 12/22/2022] Open
Abstract
Circadian clocks orchestrate the daily changes in physiology and behavior of light-sensitive organisms. These clocks measure about 24 h and tick in a self-sustained and cell-autonomous manner. Mounting evidence points toward a tight intertwining between circadian clocks and metabolism. Although various aspects of circadian control of metabolic functions have been extensively studied, our knowledge regarding circadian mitochondrial function is rudimentary. In this review, we will survey the current literature related to the circadian nature of mitochondrial biology: from mitochondrial omics studies (e.g., proteome, acetylome, and lipidome), through dissection of mitochondrial morphology, to analyses of mitochondrial processes such as nutrient utilization and respiration. We will describe potential mechanisms that are implicated in circadian regulation of mitochondrial functions in mammals and discuss the possibility of a mitochondrial-autonomous oscillator.
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Affiliation(s)
- Gal Manella
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Gad Asher
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel
- *Correspondence: Gad Asher,
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15
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Affiliation(s)
- Chang-Hoon Cho
- School of Biosystem and Biomedical Science, College of Health Science, Korea University Seoul, South Korea
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16
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Abstract
In association with sleep-wake and fasting-feeding cycles, organisms experience dramatic oscillations in energetic demands and nutrient supply. It is therefore not surprising that various metabolic parameters, ranging from the activity status of molecular energy sensors to circulating nutrient levels, oscillate in time-of-day-dependent manners. It has become increasingly clear that rhythms in metabolic processes are not simply in response to daily environmental/behavioral influences, but are driven in part by cell autonomous circadian clocks. By synchronizing the cell with its environment, clocks modulate a host of metabolic processes in a temporally appropriate manner. The purpose of this article is to review current understanding of the interplay between circadian clocks and metabolism, in addition to the pathophysiologic consequences of disruption of this molecular mechanism, in terms of cardiometabolic disease development.
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Affiliation(s)
- Shannon M Bailey
- Division of Molecular and Cellular PathologyDepartment of PathologyDivision of Cardiovascular DiseasesDepartment of Medicine, University of Alabama at Birmingham, 703 19th Street South, ZRB 308, Birmingham, Alabama 35294, USA
| | - Uduak S Udoh
- Division of Molecular and Cellular PathologyDepartment of PathologyDivision of Cardiovascular DiseasesDepartment of Medicine, University of Alabama at Birmingham, 703 19th Street South, ZRB 308, Birmingham, Alabama 35294, USA
| | - Martin E Young
- Division of Molecular and Cellular PathologyDepartment of PathologyDivision of Cardiovascular DiseasesDepartment of Medicine, University of Alabama at Birmingham, 703 19th Street South, ZRB 308, Birmingham, Alabama 35294, USA
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17
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Gillette MU, Wang TA. Brain circadian oscillators and redox regulation in mammals. Antioxid Redox Signal 2014; 20:2955-65. [PMID: 24111727 PMCID: PMC4038987 DOI: 10.1089/ars.2013.5598] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 10/10/2013] [Indexed: 11/12/2022]
Abstract
SIGNIFICANCE Functional states of organisms vary rhythmically with a period of about a day (i.e., circadian). This endogenous dynamic is shaped by day-night alternations in light and energy. Mammalian circadian rhythms are orchestrated by the hypothalamic suprachiasmatic nucleus (SCN), a brain region specialized for timekeeping. These autonomous ~24-h oscillations are cell-based, requiring transcription-translation-based regulation. SCN circadian oscillations include the maintenance of intrinsic rhythms, sensitivities to input signals, and generation of output signals. These change predictably as time proceeds from dawn to day, dusk, and through the night. SCN neuronal excitability, a highly energy-demanding process, also oscillates over ~24 h. The nature of the relationship of cellular metabolism and excitability had been unknown. RECENT ADVANCES Global SCN redox state was found to undergo an autonomous circadian rhythm. Redox state is relatively reduced in daytime, when neuronal activity is high, and oxidized during nighttime, when neurons are relatively inactive. Redox modulates neuronal excitability via tight coupling: imposed reducing or oxidizing shifts immediately alter membrane excitability. Whereas an intact transcription-translation oscillator is necessary for the redox oscillation, metabolic modulation of excitability is too rapid to be under clockwork control. CRITICAL ISSUES Our observations lead to the hypothesis that redox state and neuronal activity are coupled nontranscriptional circadian oscillators in SCN neurons. Critical issues include discovering molecular and cellular substrates and functional consequences of this redox oscillator. FUTURE DIRECTIONS Understanding interdependencies between cellular energy metabolism, neuronal activity, and circadian rhythms is critical to developing therapeutic strategies for treating neurodegenerative diseases and brain metabolic syndromes.
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Affiliation(s)
- Martha U. Gillette
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, Illinois
- Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, Illinois
- Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Tongfei A. Wang
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, Illinois
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18
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Lee JE, Zamdborg L, Southey BR, Atkins N, Mitchell JW, Li M, Gillette MU, Kelleher NL, Sweedler JV. Quantitative peptidomics for discovery of circadian-related peptides from the rat suprachiasmatic nucleus. J Proteome Res 2013; 12:585-93. [PMID: 23256577 DOI: 10.1021/pr300605p] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In mammals the suprachiasmatic nucleus (SCN), the master circadian clock, is sensitive to light input via the optic chiasm and synchronizes many daily biological rhythms. Here we explore variations in the expression levels of neuropeptides present in the SCN of rats using a label-free quantification approach that is based on integrating peak intensities between daytime, Zeitgeber time (ZT) 6, and nighttime, ZT 18. From nine analyses comparing the levels between these two time points, 10 endogenous peptides derived from eight prohormones exhibited significant differences in their expression levels (adjusted p-value <0.05). Of these, seven peptides derived from six prohormones, including GRP, PACAP, and CART, exhibited ≥ 30% increases at ZT 18, and the VGRPEWWMDYQ peptide derived from proenkephalin A showed a >50% increase at nighttime. Several endogenous peptides showing statistically significant changes in this study have not been previously reported to alter their levels as a function of time of day, nor have they been implicated in prior functional SCN studies. This information on peptide expression changes serves as a resource for discovering unknown peptide regulators that affect circadian rhythms in the SCN.
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Affiliation(s)
- Ji Eun Lee
- Department of Chemistry, Beckman Institute, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, USA
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19
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Circadian Clocks, Food Intake, and Metabolism. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2013; 119:105-35. [DOI: 10.1016/b978-0-12-396971-2.00005-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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20
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Sharpley MS, Marciniak C, Eckel-Mahan K, McManus M, Crimi M, Waymire K, Lin CS, Masubuchi S, Friend N, Koike M, Chalkia D, MacGregor G, Sassone-Corsi P, Wallace DC. Heteroplasmy of mouse mtDNA is genetically unstable and results in altered behavior and cognition. Cell 2012; 151:333-343. [PMID: 23063123 DOI: 10.1016/j.cell.2012.09.004] [Citation(s) in RCA: 256] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2012] [Revised: 06/08/2012] [Accepted: 08/20/2012] [Indexed: 12/24/2022]
Abstract
Maternal inheritance of mtDNA is the rule in most animals, but the reasons for this pattern remain unclear. To investigate the consequence of overriding uniparental inheritance, we generated mice containing an admixture (heteroplasmy) of NZB and 129S6 mtDNAs in the presence of a congenic C57BL/6J nuclear background. Analysis of the segregation of the two mtDNAs across subsequent maternal generations revealed that proportion of NZB mtDNA was preferentially reduced. Ultimately, this segregation process produced NZB-129 heteroplasmic mice and their NZB or 129 mtDNA homoplasmic counterparts. Phenotypic comparison of these three mtDNA lines demonstrated that the NZB-129 heteroplasmic mice, but neither homoplasmic counterpart, had reduced activity, food intake, respiratory exchange ratio; accentuated stress response; and cognitive impairment. Therefore, admixture of two normal but different mouse mtDNAs can be genetically unstable and can produce adverse physiological effects, factors that may explain the advantage of uniparental inheritance of mtDNA.
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Affiliation(s)
- Mark S Sharpley
- Center for Mitochondrial and Epigenomic Medicine, the Children's Hospital of Philadelphia and the Department of Pathology and Laboratory Medicine, University of Pennsylvania, Colket Translational Research Building, Philadelphia, PA 19104-4302, USA.,Center for Molecular and Mitochondrial Medicine and Genetics, University of California, Irvine, Irvine, CA 92697, USA.,Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Christine Marciniak
- Center for Molecular and Mitochondrial Medicine and Genetics, University of California, Irvine, Irvine, CA 92697, USA.,Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Kristin Eckel-Mahan
- Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA.,Center for Epigenetics and Metabolism, University of California, Irvine, Irvine, CA 92697, USA
| | - Meagan McManus
- Center for Mitochondrial and Epigenomic Medicine, the Children's Hospital of Philadelphia and the Department of Pathology and Laboratory Medicine, University of Pennsylvania, Colket Translational Research Building, Philadelphia, PA 19104-4302, USA
| | - Marco Crimi
- Center for Molecular and Mitochondrial Medicine and Genetics, University of California, Irvine, Irvine, CA 92697, USA.,Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Katrina Waymire
- Center for Molecular and Mitochondrial Medicine and Genetics, University of California, Irvine, Irvine, CA 92697, USA.,Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA.,Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Chun Shi Lin
- Center for Mitochondrial and Epigenomic Medicine, the Children's Hospital of Philadelphia and the Department of Pathology and Laboratory Medicine, University of Pennsylvania, Colket Translational Research Building, Philadelphia, PA 19104-4302, USA.,Center for Molecular and Mitochondrial Medicine and Genetics, University of California, Irvine, Irvine, CA 92697, USA.,Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Satoru Masubuchi
- Center for Epigenetics and Metabolism, University of California, Irvine, Irvine, CA 92697, USA
| | - Nicole Friend
- Center for Mitochondrial and Epigenomic Medicine, the Children's Hospital of Philadelphia and the Department of Pathology and Laboratory Medicine, University of Pennsylvania, Colket Translational Research Building, Philadelphia, PA 19104-4302, USA.,Center for Molecular and Mitochondrial Medicine and Genetics, University of California, Irvine, Irvine, CA 92697, USA.,Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Maya Koike
- Center for Mitochondrial and Epigenomic Medicine, the Children's Hospital of Philadelphia and the Department of Pathology and Laboratory Medicine, University of Pennsylvania, Colket Translational Research Building, Philadelphia, PA 19104-4302, USA
| | - Dimitra Chalkia
- Center for Mitochondrial and Epigenomic Medicine, the Children's Hospital of Philadelphia and the Department of Pathology and Laboratory Medicine, University of Pennsylvania, Colket Translational Research Building, Philadelphia, PA 19104-4302, USA.,Center for Molecular and Mitochondrial Medicine and Genetics, University of California, Irvine, Irvine, CA 92697, USA.,Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Grant MacGregor
- Center for Molecular and Mitochondrial Medicine and Genetics, University of California, Irvine, Irvine, CA 92697, USA.,Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Paolo Sassone-Corsi
- Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA.,Center for Epigenetics and Metabolism, University of California, Irvine, Irvine, CA 92697, USA
| | - Douglas C Wallace
- Center for Mitochondrial and Epigenomic Medicine, the Children's Hospital of Philadelphia and the Department of Pathology and Laboratory Medicine, University of Pennsylvania, Colket Translational Research Building, Philadelphia, PA 19104-4302, USA.,Center for Molecular and Mitochondrial Medicine and Genetics, University of California, Irvine, Irvine, CA 92697, USA.,Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA
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21
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Isobe Y, Hida H, Nishino H. Circadian rhythm of enolase in suprachiasmatic nucleus depends on mitochondrial function. J Neurosci Res 2011; 89:936-44. [PMID: 21416483 DOI: 10.1002/jnr.22610] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2010] [Revised: 01/06/2011] [Accepted: 01/09/2011] [Indexed: 11/09/2022]
Abstract
Metabolic activity in the suprachiasmatic nucleus (SCN), a center of biological rhythm, is higher during the daytime than at night. The rhythmic oscillation in the SCN is feedback controlled by the CLOCK/BMAL1 heterodimer binding to the E-box in target genes (e.g., Arg- vasopressin). Similar transcriptional regulation by NPAS2/BMAL1 heterodimer formation operates in the brain, which depends on the redox state (i.e., NAD/NADH). To clarify the metabolic function of SCN in relation to the redox state, two-dimensional electrophoresis was carried out on the mitochondrial fraction of SCN, obtained from rats kept under a light:dark cycle and constant under dim light. The electrophoretic pattern with TOF-mass spectrometry analysis revealed that enolase catalyzes the interconversion of 2-phosphoglycerate and phosphoenolpyruvate. The enolase activity, coupled with lactate dehydrogenase, was higher during the light period than that in the dark. However, enolase mRNA, analyzed by RT-PCR, showed higher levels during the dark period than in the light. The clock gene products Per2, Bmal1, Rev-erbα, and AVP mRNA in the mitochondrial fraction of SCN developed a circadian rhythm showing almost the same peak time as that in whole SCN. These mRNA rhythms ran free except for that of Rev-erbα mRNA. The results indicate that, in the glycolysis-related energy pathway, enolase might be involved in higher metabolic activity during the day than at night, at least in part.
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Affiliation(s)
- Yoshiaki Isobe
- Department of Neuro-Physiology and Brain Science, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan. yisobe@ med.nagoya-cu.ac.jp
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