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D’Apolito E, Sisalli MJ, Tufano M, Annunziato L, Scorziello A. Oxidative Metabolism in Brain Ischemia and Preconditioning: Two Sides of the Same Coin. Antioxidants (Basel) 2024; 13:547. [PMID: 38790652 PMCID: PMC11117774 DOI: 10.3390/antiox13050547] [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: 03/20/2024] [Revised: 04/17/2024] [Accepted: 04/25/2024] [Indexed: 05/26/2024] Open
Abstract
Brain ischemia is one of the major causes of chronic disability and death worldwide. It is related to insufficient blood supply to cerebral tissue, which induces irreversible or reversible intracellular effects depending on the time and intensity of the ischemic event. Indeed, neuronal function may be restored in some conditions, such as transient ischemic attack (TIA), which may be responsible for protecting against a subsequent lethal ischemic insult. It is well known that the brain requires high levels of oxygen and glucose to ensure cellular metabolism and energy production and that damage caused by oxygen impairment is tightly related to the brain's low antioxidant capacity. Oxygen is a key player in mitochondrial oxidative phosphorylation (OXPHOS), during which reactive oxygen species (ROS) synthesis can occur as a physiological side-product of the process. Indeed, besides producing adenosine triphosphate (ATP) under normal physiological conditions, mitochondria are the primary source of ROS within the cell. This is because, in 0.2-2% of cases, the escape of electrons from complex I (NADPH-dehydrogenase) and III of the electron transport chain occurring in mitochondria during ATP synthesis leads to the production of the superoxide radical anion (O2•-), which exerts detrimental intracellular effects owing to its high molecular instability. Along with ROS, reactive nitrosative species (RNS) also contribute to the production of free radicals. When the accumulation of ROS and RNS occurs, it can cause membrane lipid peroxidation and DNA damage. Here, we describe the intracellular pathways activated in brain tissue after a lethal/sub lethal ischemic event like stroke or ischemic tolerance, respectively, highlighting the important role played by oxidative stress and mitochondrial dysfunction in the onset of the two different ischemic conditions.
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Affiliation(s)
- Elena D’Apolito
- Division of Pharmacology, Department of Neuroscience Reproductive Sciences and Dentistry, Federico II University of Naples, 80131 Napoli, Italy; (E.D.); (M.T.)
| | - Maria Josè Sisalli
- Department of Translational Medicine, Federico II University of Naples, 80131 Napoli, Italy;
| | - Michele Tufano
- Division of Pharmacology, Department of Neuroscience Reproductive Sciences and Dentistry, Federico II University of Naples, 80131 Napoli, Italy; (E.D.); (M.T.)
| | | | - Antonella Scorziello
- Division of Pharmacology, Department of Neuroscience Reproductive Sciences and Dentistry, Federico II University of Naples, 80131 Napoli, Italy; (E.D.); (M.T.)
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Ivraghi MS, Zamanian MY, Gupta R, Achmad H, Alsaab HO, Hjazi A, Romero‐Parra RM, Alwaily ER, Hussien BM, Hakimizadeh E. Neuroprotective effects of gemfibrozil in neurological disorders: Focus on inflammation and molecular mechanisms. CNS Neurosci Ther 2024; 30:e14473. [PMID: 37904726 PMCID: PMC10916451 DOI: 10.1111/cns.14473] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/15/2023] [Accepted: 09/03/2023] [Indexed: 11/01/2023] Open
Abstract
BACKGROUND Gemfibrozil (Gem) is a drug that has been shown to activate PPAR-α, a nuclear receptor that plays a key role in regulating lipid metabolism. Gem is used to lower the levels of triglycerides and reduce the risk of coronary heart disease in patients. Experimental studies in vitro and in vivo have shown that Gem can prevent or slow the progression of neurological disorders (NDs), including cerebral ischemia (CI), Alzheimer's disease (AD), Parkinson's disease (PD), and multiple sclerosis (MS). Neuroinflammation is known to play a significant role in these disorders. METHOD The literature review for this study was conducted by searching Scopus, Science Direct, PubMed, and Google Scholar databases. RESULT The results of this study show that Gem has neuroprotective effects through several cellular and molecular mechanisms such as: (1) Gem has the ability to upregulate pro-survival factors (PGC-1α and TFAM), promoting the survival and function of mitochondria in the brain, (2) Gem strongly inhibits the activation of NF-κB, AP-1, and C/EBPβ in cytokine-stimulated astroglial cells, which are known to increase the expression of iNOS and the production of NO in response to proinflammatory cytokines, (3) Gem protects dopamine neurons in the MPTP mouse model of PD by increasing the expression of PPARα, which in turn stimulates the production of GDNF in astrocytes, (4) Gem reduces amyloid plaque pathology, reduces the activity of glial cells, and improves memory, (5) Gem increases myelin genes expression (MBP and CNPase) via PPAR-β, and (6) Gem increases hippocampal BDNF to counteract depression. CONCLUSION According to the study, Gem was investigated for its potential therapeutic effect in NDs. Further research is needed to fully understand the therapeutic potential of Gem in NDs.
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Affiliation(s)
| | - Mohammad Yasin Zamanian
- Neurophysiology Research CenterHamadan University of Medical SciencesHamadanIran
- Department of Pharmacology and Toxicology, School of PharmacyHamadan University of Medical SciencesHamadanIran
| | - Reena Gupta
- Institute of Pharmaceutical Research, GLA UniversityMathuraIndia
| | - Harun Achmad
- Department of Pediatric Dentistry, Faculty of DentistryHasanuddin UniversityMakassarIndonesia
| | - Hashem O. Alsaab
- Pharmaceutics and Pharmaceutical TechnologyTaif UniversityTaifSaudi Arabia
| | - Ahmed Hjazi
- Department of Medical Laboratory SciencesCollege of Applied Medical Sciences, Prince Sattam bin Abdulaziz UniversityAl‐KharjSaudi Arabia
| | | | - Enas R. Alwaily
- Microbiology Research GroupCollege of Pharmacy, Al‐Ayen UniversityThi‐QarIraq
| | - Beneen M. Hussien
- Medical Laboratory Technology DepartmentCollege of Medical Technology, The Islamic UniversityNajafIraq
| | - Elham Hakimizadeh
- Physiology‐Pharmacology Research CenterResearch Institute of Basic Medical Sciences, Rafsanjan University of Medical SciencesRafsanjanIran
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Liu J, Li X, Bai H, Yang X, Mu J, Yan R, Wang S. Traditional uses, phytochemistry, pharmacology, and pharmacokinetics of the root bark of Paeonia x suffruticosa andrews: A comprehensive review. JOURNAL OF ETHNOPHARMACOLOGY 2023; 308:116279. [PMID: 36822345 DOI: 10.1016/j.jep.2023.116279] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/11/2023] [Accepted: 02/12/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Moutan Cortex (MC), commonly known as "Mu dan pi", refers to the dried root bark of Paeonia x suffruticosa Andrews and is broadly used as a traditional herbal medication in China, Japan, and Korea. For thousands of years, it has been utilized to treat female genital, extravasated blood, cardiovascular, and stagnant blood disorders. AIM OF THE REVIEW The purpose of this review article was to summarize information on the traditional uses, phytochemistry, pharmacology and pharmacokinetics of MC, as well as to outline the further research directions for the development of new drugs and the associations between traditional uses and pharmacological effects. MATERIALS AND METHODS The information involved in the study was gathered from a variety of electronic resources, including PubMed, Web of Science, ScienceDirect, SciFinder, China Knowledge Resource Integrated Database, and Google Scholar. The date was from 1992 to 2022. RESULTS Approximately 163 chemical compounds have been extracted and identified from MC, including monoterpenes, monoterpene glycosides, triterpenes, phenolics, flavonoids, volatile oils, alkaloids, and others. In these categories, the monoterpene glycosides and phenols being the most common. A wide variety of pharmacological effects have been described for MC crude extracts and active molecules, such as antioxidant, anti-inflammatory, antibacterial and antiviral, antitumor, antidiabetic, organ protection, and neuroprotective activities, as well as treating cardiovascular diseases. Pharmacokinetics has been also used in the study of MC, including its crude extracts or chemical constituents, in order to explore the therapeutic mechanism, direct clinically appropriate application and provide new ideas for the exploitation of innovative medicines. CONCLUSION Modern pharmacological research has demonstrated that MC, as a significant therapeutic resource, has the ability to heal a wide range of diseases, particularly female genital and cardiovascular problems. These researches propose therapeutic ideas for the development of novel MC medicines. Furthermore, preclinical and clinical study have verified several observed pharmacological properties related with the traditional usages of MC.
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Affiliation(s)
- Jincai Liu
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China
| | - Xiang Li
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China
| | - Huixin Bai
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China
| | - Xu Yang
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China
| | - Jun Mu
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China
| | - Ruonan Yan
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China
| | - Siwang Wang
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China.
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Evaluation of Auranofin Loading within Ferritin Nanocages. Int J Mol Sci 2022; 23:ijms232214162. [PMID: 36430642 PMCID: PMC9695178 DOI: 10.3390/ijms232214162] [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: 09/30/2022] [Revised: 11/02/2022] [Accepted: 11/14/2022] [Indexed: 11/19/2022] Open
Abstract
Auranofin (AF), a gold(I) compound that is currently used for the treatment of rheumatoid arthritis and is in clinical trials for its promising anticancer activity, was encapsulated within the human H-chain and the horse spleen ferritin nanocages using the alkaline disassembly/reassembly protocol. The aim of the work was to highlight possible differences in their drug loading capacity and efficacy. The drug-loaded ferritins were characterized via UV-vis absorption spectroscopy and inductively coupled plasma-atomic emission spectroscopy to assess AF encapsulation and to define the exact amount of gold atoms trapped in the Ft cavity. The crystal structures allowed us to define the nature of AF interaction with both ferritins and to identify the gold binding sites. Moreover, the biological characterization let us to obtain preliminary information on the cytotoxic effect of AF when bound to the human H-chain.
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Li L, Cai D, Zhong H, Liu F, Jiang Q, Liang J, Li P, Song Y, Ji A, Jiao W, Song J, Li J, Chen Z, Li Q, Ke L. Mitochondrial dynamics and biogenesis indicators may serve as potential biomarkers for diagnosis of myasthenia gravis. Exp Ther Med 2022; 23:307. [PMID: 35340870 PMCID: PMC8931634 DOI: 10.3892/etm.2022.11236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 02/10/2022] [Indexed: 11/05/2022] Open
Abstract
Due to challenges in diagnosing myasthenia gravis (MG), identifying novel diagnostic biomarkers for this disease is essential. Mitochondria are key organelles that regulate multiple physiological functions, such as energy production, cell proliferation and cell death. In the present study, Mfn1/2, Opa1, Drp1, Fis1, AMPK, PGC-1α, NRF-1 and TFAM were compared between patients with MG and healthy subjects to identify potential diagnostic biomarkers for MG. Blood samples were collected from 50 patients with MG and 50 healthy subjects. The participants' demographic information and routine blood test results were recorded. Mitochondrial dynamics were evaluated and levels of Mfn1/2, Opa1, Drp1, Fis1, AMPK, PGC-1α, NRF-1 and TFAM were determined in peripheral blood mononuclear cells using western blotting and reverse transcription-quantitative PCR, respectively. Receiver operating characteristic curve analysis was used to evaluate the diagnostic accuracy of these indicators. The areas under the curve values of Mfn1/2, Opa1, Drp1, Fis1,AMPK, PGC-1α, NRF-1 and TFAM were 0.5408-0.8696. Compared with control subjects, mRNA expression levels of Mfn1/2, Opa1, AMPK, PGC-1α, NRF-1 and TFAM were lower, while those of Drp1 and Fis1 were higher in patients with MG. The protein expression levels of all these molecules were lower in patients with MG than in control subjects. These results suggested that mitochondrial dynamics and biogenesis indicators may be diagnostic biomarkers for MG.
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Affiliation(s)
- Lanqi Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Donghong Cai
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Huiya Zhong
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Fengbin Liu
- Department of Gastrosplenic Diseases, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Qilong Jiang
- Department of Gastrosplenic Diseases, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Jian Liang
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, Mathematical Engineering Academy of Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
| | - Peiwu Li
- Department of Gastrosplenic Diseases, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Yafang Song
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Aidong Ji
- Clinical Medical College of Acupuncture, Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
| | - Wei Jiao
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Jingwei Song
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Jinqiu Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Zhiwei Chen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Qing Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine
| | - Lingling Ke
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
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Kang S, Piao Y, Kang YC, Lim S, Pak YK. DA-9805 protects dopaminergic neurons from endoplasmic reticulum stress and inflammation. Biomed Pharmacother 2022; 145:112389. [PMID: 34775235 DOI: 10.1016/j.biopha.2021.112389] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/23/2021] [Accepted: 11/02/2021] [Indexed: 01/05/2023] Open
Abstract
Parkinson's disease (PD) is a multifactorial neurodegenerative disease with damages to mitochondria and endoplasmic reticulum (ER), followed by neuroinflammation. We previously reported that a triple herbal extract DA-9805 in experimental PD toxin-models had neuroprotective effects by alleviating mitochondrial damage and oxidative stress. In the present study, we investigated whether DA-9805 could suppress ER stress and neuroinflammation in vitro and/or in vivo. Pre-treatment with DA-9805 (1 μg/ml) attenuated upregulation of glucose-regulated protein 78 (GRP78), C/EBP homologous protein (CHOP) and cleaved caspase-3 in SH-SY5Y neuroblastoma cells treated with thapsigargin (1 µg/ml) or tunicamycin (2 µg/ml). In addition, DA-9805 prevented the production of IL-1β, IL-6, TNF-α and nitric oxide through inhibition of NF-κB activation in BV2 microglial cells stimulated with lipopolysaccharides (LPS). Intraperitoneal injection of LPS (10 mg/kg) into mice can induce acute neuroinflammation and dopaminergic neuronal cell death. Oral administration of DA-9805 (10 or 30 mg/kg/day for 3 days before LPS injection) prevented loss of dopaminergic neurons and activation of microglia and astrocytes in the substantia nigra in LPS-injected mouse models. Taken together, these results indicate that DA-9805 can effectively prevent ER stress and neuroinflammation, suggesting that DA-9805 is a multitargeting and disease-modifying therapeutic candidate for PD.
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Affiliation(s)
- Sora Kang
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Ying Piao
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Young Cheol Kang
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Suyeol Lim
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Youngmi Kim Pak
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, South Korea; Department of Physiology, College of Medicine, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, South Korea.
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Martín-Montañez E, Valverde N, Ladrón de Guevara-Miranda D, Lara E, Romero-Zerbo YS, Millon C, Boraldi F, Ávila-Gámiz F, Pérez-Cano AM, Garrido-Gil P, Labandeira-Garcia JL, Santin LJ, Pavia J, Garcia-Fernandez M. Insulin-like growth factor II prevents oxidative and neuronal damage in cellular and mice models of Parkinson's disease. Redox Biol 2021; 46:102095. [PMID: 34418603 PMCID: PMC8379511 DOI: 10.1016/j.redox.2021.102095] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/05/2021] [Accepted: 08/05/2021] [Indexed: 01/03/2023] Open
Abstract
Oxidative distress and mitochondrial dysfunction, are key factors involved in the pathophysiology of Parkinson's disease (PD). The pleiotropic hormone insulin-like growth factor II (IGF-II) has shown neuroprotective and antioxidant effects in some neurodegenerative diseases. In this work, we demonstrate the protective effect of IGF-II against the damage induced by 1-methyl-4-phenylpyridinium (MPP+) in neuronal dopaminergic cell cultures and a mouse model of progressive PD. In the neuronal model, IGF-II counteracts the oxidative distress produced by MPP + protecting dopaminergic neurons. Improved mitochondrial function, increased nuclear factor (erythroid-derived 2)-like2 (NRF2) nuclear translocation along with NRF2-dependent upregulation of antioxidative enzymes, and modulation of mammalian target of rapamycin (mTOR) signalling pathway were identified as mechanisms leading to neuroprotection and the survival of dopaminergic cells. The neuroprotective effect of IGF-II against MPP + -neurotoxicity on dopaminergic neurons depends on the specific IGF-II receptor (IGF-IIr). In the mouse model, IGF-II prevents behavioural dysfunction and dopaminergic nigrostriatal pathway degeneration and mitigates neuroinflammation induced by MPP+. Our work demonstrates that hampering oxidative stress and normalising mitochondrial function through the interaction of IGF-II with its specific IGF-IIr are neuroprotective in both neuronal and mouse models. Thus, the modulation of the IGF-II/IGF-IIr signalling pathway may be a useful therapeutic approach for the prevention and treatment of PD. IGF-II hampers oxidative damage and promotes survival in a cellular model of PD. IGF-II avoids mitochondrial damage in dopaminergic cells in a model of PD. IGF-II receptor mediates the neuroprotective effect of IGF-II in a cellular model of PD. IGF-II prevents nigrostriatal degeneration and inflammation in a mice model of PD. IGF-II prevents behavioural dysfunction in a mice model of PD.
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Affiliation(s)
- Elisa Martín-Montañez
- Departamento de Farmacología y Pediatría, Facultad de Medicina, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga (UMA), Malaga, 29010, Spain
| | - Nadia Valverde
- Departamento de Farmacología y Pediatría, Facultad de Medicina, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga (UMA), Malaga, 29010, Spain; Departamento de Fisiología Humana, Facultad de Medicina, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga (UMA), Malaga, 29010, Spain
| | - David Ladrón de Guevara-Miranda
- Departamento de Psicobiología y Metodología de las Ciencias del Comportamiento, Facultad de Psicología, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga (UMA), Malaga, 29010, Spain
| | - Estrella Lara
- Departamento de Fisiología Humana, Facultad de Medicina, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga (UMA), Malaga, 29010, Spain
| | - Yanina S Romero-Zerbo
- Departamento de Fisiología Humana, Facultad de Medicina, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga (UMA), Malaga, 29010, Spain
| | - Carmelo Millon
- Departamento de Fisiología Humana, Facultad de Medicina, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga (UMA), Malaga, 29010, Spain
| | - Federica Boraldi
- Dipartimento di Scienze della Vita. Patologia Generale.Universita di Modena e Reggio Emilia. 41125, Italy
| | - Fabiola Ávila-Gámiz
- Departamento de Psicobiología y Metodología de las Ciencias del Comportamiento, Facultad de Psicología, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga (UMA), Malaga, 29010, Spain
| | - Ana M Pérez-Cano
- Departamento de Psicobiología y Metodología de las Ciencias del Comportamiento, Facultad de Psicología, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga (UMA), Malaga, 29010, Spain
| | - Pablo Garrido-Gil
- Centro de Investigación en Medicina Molecular y Enfermedades Crónicas (CiMUS) y Centro de Investigación en Red de Enfermedades Neurodegenerativas (CIBERNED-Madrid). Universidad de Santiago de Compostela, 15782 Spain
| | - Jose Luis Labandeira-Garcia
- Centro de Investigación en Medicina Molecular y Enfermedades Crónicas (CiMUS) y Centro de Investigación en Red de Enfermedades Neurodegenerativas (CIBERNED-Madrid). Universidad de Santiago de Compostela, 15782 Spain
| | - Luis J Santin
- Departamento de Psicobiología y Metodología de las Ciencias del Comportamiento, Facultad de Psicología, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga (UMA), Malaga, 29010, Spain
| | - Jose Pavia
- Departamento de Farmacología y Pediatría, Facultad de Medicina, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga (UMA), Malaga, 29010, Spain.
| | - Maria Garcia-Fernandez
- Departamento de Fisiología Humana, Facultad de Medicina, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga (UMA), Malaga, 29010, Spain.
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Kaur I, Behl T, Sehgal A, Singh S, Sharma N, Aleya L, Bungau S. Connecting the dots between mitochondrial dysfunction and Parkinson's disorder: focus mitochondria-targeting therapeutic paradigm in mitigating the disease severity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:37060-37081. [PMID: 34053042 DOI: 10.1007/s11356-021-14619-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 05/25/2021] [Indexed: 06/12/2023]
Abstract
Mitochondria are unique cell organelles, which exhibit multifactorial roles in numerous cell physiological processes, significantly preserving the integrity of neural synaptic interconnections, mediating ATP production, and regulating apoptotic signaling pathways and calcium homeostasis. Multiple neurological disorders occur as a consequence of impaired mitochondrial functioning, with greater sensitivity of dopaminergic (DA) neurons to mitochondrial dysfunction, due to oxidative nature and low mitochondrial mass, thus supporting the contribution of mitochondrial impairment in Parkinson's disorder (neuronal damage due to curbed dopamine levels). The pathophysiology of the second most common disorder, PD, is potentiated by various mitochondrial homeostasis regulating genes, as discussed in the review. The PD symptoms are known to be aggravated by multiple mitochondria-linked alterations, like reactive oxygen species (ROS) production, Ca2+ buffering, imbalanced mitochondrial dynamics (fission, fusion, mitophagy), biogenetic dysfunctions, disrupted mitochondrial membrane potential (MMP), protein aggregation, neurotoxins, and genetic mutations, which manifest the central involvement of unhealthy mitochondria in neurodegeneration, resulting in retarded DA neurons in region of substantia nigra pars compacta (SNpc), causing PD. Furthermore, the review tends to target altered mitochondrial components, like oxidative stress, inflammation, biogenetic alterations, impaired dynamics, uncontrolled homeostasis, and genetic mutations, to provide a sustainable and reliable alternative in PD therapeutics and to overcome the pitfalls of conventional therapeutic agents. Therefore, the authors elaborate the relationship between PD pathogenesis and mitochondrial dysfunctions, followed by a suitable mitochondria-targeting therapeutic portfolio, as well as future considerations, aiding the researchers to investigate novel strategies to mitigate the severity of the disease.
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Affiliation(s)
- Ishnoor Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Punjab, India.
| | - Aayush Sehgal
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Sukhbir Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Neelam Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Lotfi Aleya
- Chrono-Environment Laboratory, UMR CNRS 6249, Bourgogne Franche-Comté University, Besançon, France
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
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9
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Omoruyi SI, Ibrakaw AS, Ekpo OE, Boatwright JS, Cupido CN, Hussein AA. Neuroprotective Activities of Crossyne flava Bulbs and Amaryllidaceae Alkaloids: Implications for Parkinson's Disease. Molecules 2021; 26:molecules26133990. [PMID: 34208814 PMCID: PMC8272225 DOI: 10.3390/molecules26133990] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/13/2021] [Accepted: 06/24/2021] [Indexed: 02/07/2023] Open
Abstract
Parkinson’s disease (PD) is one of the most common neurodegenerative diseases and affects approximately 6.3 million people worldwide. To date, the treatment of PD remains a challenge, as available treatment options are known to be associated with serious side effects; hence, the search for new treatment strategies is critical. Extracts from the Amaryllidaceae plant family as well as their alkaloids have been reported to have neuroprotective potentials. This study, therefore, investigated the biological activities of Crossyne flava and its isolated alkaloids in an in vitro MPP+ (1-methyl-4-phenylpyridinium) PD model using SH-SY5Y cells. The effects of the total extract as well as the four compounds isolated from Crossyne flava (i.e., pancratinine B (1), bufanidrine (2), buphanisine (3), and epibuphanisine (4)) were evaluated for cell viability, neuroprotection, levels of reactive oxygen species (ROS), adenosine triphosphate activity (ATP), and caspase 3/7 activity in SH-SY5Y cells. The results obtained showed that pre-treatment with both the extract and the isolated compounds was effective in protecting the SH-SY5Y cells from MPP+-induced neurotoxicity and inhibited ROS generation, ATP depletion as well as apoptosis induction in the SH-SY5Y cells. The results of this study show that the Amaryllidaceae plant family may be a source of novel compounds for the treatment of neurodegenerative diseases, which validates the reported traditional uses.
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Affiliation(s)
- Sylvester I. Omoruyi
- Department of Chemistry, Cape Peninsula University of Technology, Symphony Road, Bellville 7535, South Africa;
| | - Abobaker S. Ibrakaw
- Department of Biodiversity and Conservation Biology, University of the Western Cape, Cape Town, Robert Sobukwe Road, Bellville 7535, South Africa; (A.S.I.); (J.S.B.)
| | - Okobi E. Ekpo
- Department of Anatomy and Cellular Biology, College of Medicine and Health Sciences, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates;
| | - James S. Boatwright
- Department of Biodiversity and Conservation Biology, University of the Western Cape, Cape Town, Robert Sobukwe Road, Bellville 7535, South Africa; (A.S.I.); (J.S.B.)
| | - Christopher N. Cupido
- Department of Botany, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa;
| | - Ahmed A. Hussein
- Department of Chemistry, Cape Peninsula University of Technology, Symphony Road, Bellville 7535, South Africa;
- Correspondence: ; Tel.: +27-21-959-6193; Fax: +27-21-959-3055
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10
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Stępniak K, Machnicka MA, Mieczkowski J, Macioszek A, Wojtaś B, Gielniewski B, Poleszak K, Perycz M, Król SK, Guzik R, Dąbrowski MJ, Dramiński M, Jardanowska M, Grabowicz I, Dziedzic A, Kranas H, Sienkiewicz K, Diamanti K, Kotulska K, Grajkowska W, Roszkowski M, Czernicki T, Marchel A, Komorowski J, Kaminska B, Wilczyński B. Mapping chromatin accessibility and active regulatory elements reveals pathological mechanisms in human gliomas. Nat Commun 2021; 12:3621. [PMID: 34131149 PMCID: PMC8206121 DOI: 10.1038/s41467-021-23922-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 05/19/2021] [Indexed: 12/15/2022] Open
Abstract
Chromatin structure and accessibility, and combinatorial binding of transcription factors to regulatory elements in genomic DNA control transcription. Genetic variations in genes encoding histones, epigenetics-related enzymes or modifiers affect chromatin structure/dynamics and result in alterations in gene expression contributing to cancer development or progression. Gliomas are brain tumors frequently associated with epigenetics-related gene deregulation. We perform whole-genome mapping of chromatin accessibility, histone modifications, DNA methylation patterns and transcriptome analysis simultaneously in multiple tumor samples to unravel epigenetic dysfunctions driving gliomagenesis. Based on the results of the integrative analysis of the acquired profiles, we create an atlas of active enhancers and promoters in benign and malignant gliomas. We explore these elements and intersect with Hi-C data to uncover molecular mechanisms instructing gene expression in gliomas.
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Affiliation(s)
- Karolina Stępniak
- Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Magdalena A Machnicka
- Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, Warsaw, Poland
| | - Jakub Mieczkowski
- Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
- Medical University of Gdansk, International Research Agenda 3P Medicine Laboratory, Gdansk, Poland
| | - Anna Macioszek
- Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, Warsaw, Poland
| | - Bartosz Wojtaś
- Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Bartłomiej Gielniewski
- Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Katarzyna Poleszak
- Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Malgorzata Perycz
- Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Sylwia K Król
- Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Rafał Guzik
- Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Michał J Dąbrowski
- Institute of Computer Science of the Polish Academy of Sciences, Warsaw, Poland
| | - Michał Dramiński
- Institute of Computer Science of the Polish Academy of Sciences, Warsaw, Poland
| | - Marta Jardanowska
- Institute of Computer Science of the Polish Academy of Sciences, Warsaw, Poland
| | - Ilona Grabowicz
- Institute of Computer Science of the Polish Academy of Sciences, Warsaw, Poland
| | - Agata Dziedzic
- Institute of Computer Science of the Polish Academy of Sciences, Warsaw, Poland
| | - Hanna Kranas
- Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, Warsaw, Poland
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Karolina Sienkiewicz
- Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, Warsaw, Poland
| | - Klev Diamanti
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, Sweden
| | - Katarzyna Kotulska
- Departments of Neurology, Neurosurgery, Neuropathology, The Children's Memorial Health Institute, Warsaw, Poland
| | - Wiesława Grajkowska
- Departments of Neurology, Neurosurgery, Neuropathology, The Children's Memorial Health Institute, Warsaw, Poland
| | - Marcin Roszkowski
- Departments of Neurology, Neurosurgery, Neuropathology, The Children's Memorial Health Institute, Warsaw, Poland
| | - Tomasz Czernicki
- Department of Neurosurgery, Medical University of Warsaw, Warsaw, Poland
| | - Andrzej Marchel
- Department of Neurosurgery, Medical University of Warsaw, Warsaw, Poland
| | - Jan Komorowski
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, Sweden
| | - Bozena Kaminska
- Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland.
| | - Bartek Wilczyński
- Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, Warsaw, Poland.
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11
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Li H, Niu N, Yang J, Dong F, Zhang T, Li S, Zhao W. Nuclear respiratory factor 1 protects H9C2 cells against hypoxia-induced apoptosis via the death receptor pathway and mitochondrial pathway. Cell Biol Int 2021; 45:1784-1796. [PMID: 33913583 DOI: 10.1002/cbin.11619] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/06/2021] [Accepted: 04/18/2021] [Indexed: 12/22/2022]
Abstract
Hypoxia-induced cardiomyocyte apoptosis is one of the leading causes of heart failure. Nuclear respiratory factor 1 (NRF-1) was suggested as a protector against cell apoptosis; However, the mechanism is not clear. Therefore, the aim of this study was to elucidate the role of NRF-1 in hypoxia-induced H9C2 cardiomyocyte apoptosis and to explore its effect on regulating the death receptor pathway and mitochondrial pathway. NRF-1 was overexpressed or knocked down in H9C2 cells, which were then exposed to a hypoxia condition for 0, 3, 6, 12, and 24 h. Changes in cell proliferation, cell viability, reactive oxygen species (ROS) generation, and mitochondrial membrane potential (MMP) were investigated. The activities of caspase-3, -8, and -9, apoptosis rate, and the gene and protein expression levels of the death receptor pathway and mitochondrial pathway were analyzed. Under hypoxia exposure, NRF-1 overexpression improved the proliferation and viability of H9C2 cells and decreased ROS generation, MMP loss, caspase activities, and the apoptosis rate. However, the NRF-1 knockdown group showed the opposite results. Additionally, NRF-1 upregulated the expression of antiapoptotic molecules involved in the death receptor and mitochondrial pathways, such as CASP8 and FADD-like apoptosis regulator, B-cell lymphoma 2, B-cell lymphoma-extra-large, and cytochrome C. Conversely, the expression of proapoptotic molecules, such as caspase-8, BH3-interacting domain death agonist, Bcl-2-associated X protein, caspase-9, and caspase-3 was downregulated by NRF-1 overexpression in hypoxia-induced H9C2 cells. These results suggest that NRF-1 functions as an antiapoptotic factor in the death receptor and mitochondrial pathways to mitigate hypoxia-induced apoptosis in H9C2 cardiomyocytes.
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Affiliation(s)
- Hui Li
- College of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Nan Niu
- College of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Jihui Yang
- College of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Fei Dong
- College of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Tingrui Zhang
- College of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Shasha Li
- College of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Wei Zhao
- College of Basic Medicine, Ningxia Medical University, Yinchuan, China
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12
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Baghi M, Yadegari E, Rostamian Delavar M, Peymani M, Ganjalikhani‐Hakemi M, Salari M, Nasr‐Esfahani MH, Megraw TL, Ghaedi K. MiR-193b deregulation is associated with Parkinson's disease. J Cell Mol Med 2021; 25:6348-6360. [PMID: 34018309 PMCID: PMC8366452 DOI: 10.1111/jcmm.16612] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 02/12/2021] [Accepted: 04/28/2021] [Indexed: 02/05/2023] Open
Abstract
PGC-1α/FNDC5/BDNF has found to be a critical pathway in neurodegeneration. MicroRNAs (miR(NA)s) are non-coding regulatory RNAs whose dysregulation has been observed in multiple neurological disorders, and miRNA-mediated gene deregulation plays a decisive role in PD. Here, candidate miRNA was chosen based on the literature survey and in silico studies. Chronic and acute models of PD were created using MPP+-treated SH-SY5Y cells. Twenty PD patients and 20 healthy volunteers were recruited. RT-qPCR was performed to assess the expression of miRNA and genes. Severe mitochondrial dysfunction induced by acute MPP+ treatment instigated compensatory mechanisms through enhancing expression of PGC-1α/FNDC5/BDNF pathway genes, while chronic MPP+ toxicity led to down-regulated levels of the genes in SH-SY5Y cells. PD peripheral blood mononuclear cells (PBMCs) also showed decreased expression of target genes. There were significant changes in the level of miR-193b in both models, as well as PD PBMCs. Moreover, miR-193b overexpression significantly affected PGC-1α, FNDC5 and TFAM levels. Interestingly, down-regulations of PGC-1α, FNDC5, BDNF and TFAM were inversely correlated with miR-193b up-regulation in PD PBMCs. This study showed the deregulation of PGC-1α/FNDC5/BDNF pathway in PD models and PBMCs, verifying its importance in neurodegeneration. Our findings also revealed that miR-193b functions in PD development, possibly through regulating PGC-1α/FNDC5/BDNF pathway, suggesting miR-193b as a potential biomarker for PD diagnosis.
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Affiliation(s)
- Masoud Baghi
- Department of Cell and Molecular Biology and MicrobiologyFaculty of Biological Science and TechnologyUniversity of IsfahanIsfahanIran
- Department of Animal BiotechnologyCell Science Research CenterRoyan Institute for BiotechnologyACECRIsfahanIran
| | - Elaheh Yadegari
- Department of Cell and Molecular Biology and MicrobiologyFaculty of Biological Science and TechnologyUniversity of IsfahanIsfahanIran
| | - Mahsa Rostamian Delavar
- Department of Cell and Molecular Biology and MicrobiologyFaculty of Biological Science and TechnologyUniversity of IsfahanIsfahanIran
| | - Maryam Peymani
- Department of BiologyFaculty of Basic SciencesShahrekord BranchIslamic Azad UniversityShahrekordIran
| | | | - Mehri Salari
- Functional Neurosurgery Research CenterShohada Tajrish Neurosurgical Center of ExcellenceShahid Beheshti University of Medical SciencesTehranIran
| | | | - Timothy L. Megraw
- Department of Biomedical SciencesFlorida State UniversityCollege of MedicineTallahasseeFLUSA
| | - Kamran Ghaedi
- Department of Cell and Molecular Biology and MicrobiologyFaculty of Biological Science and TechnologyUniversity of IsfahanIsfahanIran
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13
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Ke L, Li Q, Song J, Jiao W, Ji A, Chen T, Pan H, Song Y. The mitochondrial biogenesis signaling pathway is a potential therapeutic target for myasthenia gravis via energy metabolism (Review). Exp Ther Med 2021; 22:702. [PMID: 34007311 PMCID: PMC8120506 DOI: 10.3892/etm.2021.10134] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 07/21/2020] [Indexed: 02/06/2023] Open
Abstract
Myasthenia gravis (MG) is an autoantibody-mediated autoimmune disease that is characterized by muscle weakness and fatigue. Traditional treatments for MG target the neuromuscular junction (NMJ) or the immune system. However, the efficacy of such treatments is limited, and novel therapeutic options for MG are urgently required. In the current review, a new therapeutic strategy is proposed based on the mitochondrial biogenesis and energy metabolism pathway, as stimulating mitochondrial biogenesis and the energy metabolism might alleviate myasthenia gravis. A number of cellular sensors of the energy metabolism were investigated, including AMP-activated protein kinase (AMPK) and sirtuin 1 (SIRT1). AMPK and SIRT1 are sensors that regulate cellular energy homeostasis and maintain energy metabolism by balancing anabolism and catabolism. Peroxisome proliferator-activated receptor γ coactivator 1α and its downstream transcription factors nuclear respiratory factors 1, nuclear respiratory factors 2, and transcription factor A are key sensors of mitochondrial biogenesis, which can restore mitochondrial DNA and produce new mitochondria. These processes help to control muscle contraction and relieve the symptoms of MG, including muscle weakness caused by dysfunctional NMJ transmission. Therefore, the present review provides evidence for the therapeutic potential of targeting mitochondrial biogenesis for the treatment of MG.
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Affiliation(s)
- Lingling Ke
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China.,Institute of Pi-Wei, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Qing Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China.,Institute of Pi-Wei, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Jingwei Song
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China.,Institute of Pi-Wei, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Wei Jiao
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China.,Institute of Pi-Wei, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Aidong Ji
- Clinical Medical College of Acupuncture, Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
| | - Tongkai Chen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China.,Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Huafeng Pan
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Yafang Song
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China.,Institute of Pi-Wei, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
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14
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Pak YK, Choi HS, Park WH, Im S, Lind PM, Lind L, Lee HK. High Serum-Induced AhRL Is Associated with Prevalent Metabolic Syndrome and Future Impairment of Glucose Tolerance in the Elderly. Endocrinol Metab (Seoul) 2021; 36:436-446. [PMID: 33866778 PMCID: PMC8090465 DOI: 10.3803/enm.2020.883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 03/09/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND High circulating levels of dioxins and dioxin-like chemicals, acting via the aryl hydrocarbon receptor (AhR), have previously been linked to diabetes. We now investigated whether the serum AhR ligands (AhRL) were higher in subjects with metabolic syndrome (MetS) and in subjects who had developed a worsened glucose tolerance over time. METHODS Serum AhRL at baseline was measured by a cell-based AhRL activity assay in 70-year-old subjects (n=911) in the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) study. The main outcome measures were prevalent MetS and worsening of glucose tolerance over 5 years of follow-up. RESULTS AhRL was significantly elevated in subjects with prevalent MetS as compared to those without MetS, following adjustment for sex, smoking, exercise habits, alcohol intake and educational level (P=0.009). AhRL at baseline was higher in subjects who developed impaired fasting glucose or diabetes at age 75 years than in those who remained normoglycemic (P=0.0081). The odds ratio (OR) of AhRL for worsening glucose tolerance over 5 years was 1.43 (95% confidence interval [CI], 1.13 to 1.81; P=0.003, continuous variables) and 2.81 (95% CI, 1.31 to 6.02; P=0.008, in the highest quartile) adjusted for sex, life style factors, body mass index, and glucose. CONCLUSION These findings support a large body of epidemiologic evidence that exposure to AhR transactivating substances, such as dioxins and dioxin-like chemicals, might be involved in the pathogenesis of MetS and diabetes development. Measurement of serum AhRL in humans can be a useful tool in predicting the onset of metabolic disorders.
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Affiliation(s)
- Youngmi Kim Pak
- Department of Physiology, Kyung Hee University School of Medicine, Seoul, Korea
- Department of Neuroscience, Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, Kyung Hee University School of Medicine, Graduate School, Seoul, Korea
| | - Hoon Sung Choi
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Wook Ha Park
- Department of Physiology, Kyung Hee University School of Medicine, Seoul, Korea
| | - Suyeol Im
- Department of Neuroscience, Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, Kyung Hee University School of Medicine, Graduate School, Seoul, Korea
| | - P. Monica Lind
- Occupational and Environmental Medicine, Uppsala University, Uppsala, Sweden
| | - Lars Lind
- Acute and Internal Medicine, Department of Medicine, Uppsala University Hospital, Uppsala, Sweden
| | - Hong Kyu Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
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15
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Liang J, Zhou X, Wang J, Fei ZY, Qin GC, Zhang DK, Zhou JY, Chen LX. Upregulation of silent information regulator 1 alleviates mitochondrial dysfunction in the trigeminal nucleus caudalis in a rat model of chronic migraine. Neuroreport 2021; 32:144-156. [PMID: 33395186 DOI: 10.1097/wnr.0000000000001569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Although the mechanism of chronic migraine is still unclear, more and more studies have shown that mitochondrial dysfunction plays a possible role in migraine pathophysiology. Silent information regulator 1 (SIRT1) plays a vital role in mitochondrial dysfunction in many diseases. However, there is no research on the role of SIRT1 in mitochondrial dysfunction of chronic migraine. The aim of this study was to explore the role of SIRT1 in mitochondrial dysfunction in chronic migraine. A rat model was established through repeated dural infusions of inflammatory soup for 7 days to simulate chronic migraine attacks. Cutaneous hyperalgesia caused by the repeated infusions of inflammatory soup was detected using the von Frey test. Then, we detected SIRT1 expression in the trigeminal nucleus caudalis. To explore the effect of SIRT1 on mitochondrial dysfunction in chronic migraine rats, we examined whether SRT1720, an activator of SIRT1, altered mitochondrial dysfunction in chronic migraine rats. Repeated infusions of inflammatory soup resulted in cutaneous hyperalgesia accompanied by downregulation of SIRT1. SRT1720 significantly alleviated the cutaneous hyperalgesia induced by repeated infusions of inflammatory soup. Furthermore, activation of SIRT1 markedly increased the expression of peroxisome proliferator-activated receptor gamma-coactivator 1-alpha, transcription factor A, nuclear respiratory factor 1 and nuclear respiratory factor 2 mitochondrial DNA and increased the ATP content and mitochondrial membrane potential. Our results indicate that SIRT1 may have an effect on mitochondrial dysfunction in chronic migraine rats. Activation of SIRT1 has a protective effect on mitochondrial function in chronic migraine rats.
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Affiliation(s)
| | | | | | | | | | | | - Ji-Ying Zhou
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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16
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Qi-activating quercetin alleviates mitochondrial dysfunction and neuroinflammation in vivo and in vitro. Arch Pharm Res 2020; 43:553-566. [DOI: 10.1007/s12272-020-01238-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 05/19/2020] [Indexed: 01/05/2023]
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17
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Zhao Q, Tian Z, Zhou G, Niu Q, Chen J, Li P, Dong L, Xia T, Zhang S, Wang A. SIRT1-dependent mitochondrial biogenesis supports therapeutic effects of resveratrol against neurodevelopment damage by fluoride. Theranostics 2020; 10:4822-4838. [PMID: 32308752 PMCID: PMC7163447 DOI: 10.7150/thno.42387] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 02/23/2020] [Indexed: 12/11/2022] Open
Abstract
Rationale: Potential adverse effects of fluoride on neurodevelopment has been extensively explored and mitochondria have been recognized as critical targets. Mitochondrial biogenesis serves a crucial role in maintaining mitochondrial homeostasis and salubrious properties of resveratrol (RSV) has been well-defined. However, the molecular mechanisms governing mitochondrial biogenesis in developmental fluoride neurotoxicity remain unclear and the related therapeutic dietary agent is lacking. Methods: In vitro neuroblastoma SH-SY5Y cells and in vivo Sprague-Dawley rat model of developmental fluoride exposure were adopted. A total population of 60 children under long-term stable fluoride exposure were also recruited. This work used a combination of biochemical and behavioral techniques. Biochemical methods included analysis of mitochondrial function and mitochondrial biogenesis, as well as mRNA and protein expression of mitochondrial biogenesis signaling molecules, including silent information regulator 1 (SIRT1), peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α), nuclear respiratory factor 1 (NRF1) and mitochondrial transcription factor A (TFAM). Behavioral studies investigated spatial learning and memory ability of rats. Results: Both in vivo and in vitro experiments showed that sodium fluoride (NaF) caused mitochondrial dysfunction and impaired mitochondrial biogenesis. Also, NaF elevated SIRT1 levels and suppressed SIRT1 deacetylase activity along with decreased levels of PGC-1α, NRF1 and TFAM, suggestive of dysregulation of mitochondrial biogenesis signaling molecules. Moreover, enhancement of mitochondrial biogenesis by TFAM overexpression alleviated NaF-induced neuronal death through improving mitochondrial function in vitro. Further in vivo and in vitro studies identified RSV, the strongest specific SIRT1 activator, improved mitochondrial biogenesis and subsequent mitochondrial function to protect against developmental fluoride neurotoxicity via activating SIRT1-dependent PGC-1α/NRF1/TFAM signaling pathway. Noteworthy, epidemiological data indicated intimate correlations between disturbed circulating levels of mitochondrial biogenesis signaling molecules and fluoride-caused intellectual loss in children. Conclusions: Our data suggest the pivotal role of impaired mitochondrial biogenesis in developmental fluoride neurotoxicity and the underlying SIRT1 signaling dysfunction in such neurotoxic process, which emphasizes RSV as a potential therapeutic dietary agent for relieving developmental fluoride neurotoxicity.
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Affiliation(s)
- Qian Zhao
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Zhiyuan Tian
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Guoyu Zhou
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Qiang Niu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Jingwen Chen
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Pei Li
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Lixin Dong
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Tao Xia
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Shun Zhang
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Aiguo Wang
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
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18
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Baghi M, Rostamian Delavar M, Yadegari E, Peymani M, Pozo D, Hossein Nasr-Esfahani M, Ghaedi K. Modified level of miR-376a is associated with Parkinson's disease. J Cell Mol Med 2020; 24:2622-2634. [PMID: 31930701 PMCID: PMC7028860 DOI: 10.1111/jcmm.14979] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 11/02/2019] [Accepted: 12/16/2019] [Indexed: 12/02/2022] Open
Abstract
Parkinson's disease (PD) is a frequent progressive neurodegenerative disorder. Impaired mitochondrial function is a major feature of sporadic PD. Some susceptibility or causative genes detected in PD are strongly associated with mitochondrial dysfunction including PGC1α, TFAM and GSK3β. microRNAs (miRNAs) are non‐coding RNAs whose altered levels are proven in disparate PD models and human brains. Therefore, the aim of this study was to detect modulations of miRs upstream of PGC1α, TFAM and GSK3β in association with PD onset and progress. In this study, a total of 33 PD subjects and 25 healthy volunteers were recruited. Candidate miRNA (miR‐376a) was selected through target prediction tools and literature survey. Chronic and acute in vitro PD models were created by MPP+‐intoxicated SHSY5Y cells. The levels of miR‐376a and aforementioned genes were assessed by RT‐qPCR. The expression of target genes was decreased in chronic model while there were dramatically up‐regulated levels of those genes in acute model of PD. miR‐376a was strongly altered in both acute and chronic PD models as well as PBMCs of PD patients. Our results also showed overexpression of PGC1α, and TFAM in PBMCs is inversely correlated with down‐regulation of miR‐376a, suggesting that miR‐376a possibly has an impact on PD pathogenesis through regulation of these genes which are involved in mitochondrial function. miR‐376a expression in PD‐derived PBMCs was also correlated with disease severity and may serve as a potential biomarker for PD diagnosis. This is the first study showing altered levels of miR‐376a in PD models and PBMCs, suggesting the probable role of this miRNA in PD pathogenesis. The present study also proposed TFAM and PGC1α as target genes of miR‐376a for the first time, through which it possibly can exert its impact on PD pathogenesis.
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Affiliation(s)
- Masoud Baghi
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.,Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, Isfahan, Iran
| | - Mahsa Rostamian Delavar
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.,Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, Isfahan, Iran
| | - Elaheh Yadegari
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Maryam Peymani
- Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, Isfahan, Iran.,Department of Biology, Faculty of Basic Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - David Pozo
- CABIMER, Andalusian Center for Molecular Biology and Regenerative Medicine, Sevilla, Spain.,Department of Medical Biochemistry, Molecular Biology and Immunology, Universidad de Sevilla, Sevilla, Spain
| | | | - Kamran Ghaedi
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.,Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, Isfahan, Iran
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Xia PP, Zhang F, Chen C, Wang ZH, Wang N, Li LY, Guo QL, Ye Z. Rac1 relieves neuronal injury induced by oxygenglucose deprivation and re-oxygenation via regulation of mitochondrial biogenesis and function. Neural Regen Res 2020; 15:1937-1946. [PMID: 32246643 PMCID: PMC7513980 DOI: 10.4103/1673-5374.280325] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Certain microRNAs (miRNAs) can function as neuroprotective factors after reperfusion/ischemia brain injury. miRNA-142-3p can participate in the occurrence and development of tumors and myocardial ischemic injury by negatively regulating the activity of Rac1, but it remains unclear whether miRNA-142-3p also participates in cerebral ischemia/reperfusion injury. In this study, a model of oxygen-glucose deprivation/re-oxygenation in primary cortical neurons was established and the neurons were transfected with miR-142-3p agomirs or miR-142-3p antagomirs. miR-142-3p expression was down-regulated in neurons when exposed to oxygen-glucose deprivation/re-oxygenation. Over-expression of miR-142-3p using its agomir remarkably promoted cell death and apoptosis induced by oxygen-glucose deprivation/re-oxygenation and improved mitochondrial biogenesis and function, including the expression of peroxisome proliferator-activated receptor-γ coactivator-1α, mitochondrial transcription factor A, and nuclear respiratory factor 1. However, the opposite effects were produced if miR-142-3p was inhibited. Luciferase reporter assays verified that Rac Family Small GTPase 1 (Rac1) was a target gene of miR-142-3p. Over-expressed miR-142-3p inhibited NOX2 activity and expression of Rac1 and Rac1-GTPase (its activated form). miR-142-3p antagomirs had opposite effects after oxygen-glucose deprivation/re-oxygenation. Our results indicate that miR-142-3p down-regulates the expression and activation of Rac1, regulates mitochondrial biogenesis and function, and inhibits oxygen-glucose deprivation damage, thus exerting a neuroprotective effect. The experiments were approved by the Committee of Experimental Animal Use and Care of Central South University, China (approval No. 201703346) on March 7, 2017.
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Affiliation(s)
- Ping-Ping Xia
- Department of Anesthesiology, Xiangya Hospital; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province, China
| | - Fan Zhang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Cheng Chen
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Zhi-Hua Wang
- Department of Anesthesiology, Hainan General Hospital, Haikou, Hainan Province, China
| | - Na Wang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Long-Yan Li
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Qu-Lian Guo
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Zhi Ye
- Department of Anesthesiology, Xiangya Hospital; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province, China
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20
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Zilocchi M, Fasano M, Alberio T. Mitochondrial Proteins in the Development of Parkinson’s Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1158:17-44. [DOI: 10.1007/978-981-13-8367-0_2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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21
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Deng X, Zhang S, Wu J, Sun X, Shen Z, Dong J, Huang J. Promotion of Mitochondrial Biogenesis via Activation of AMPK-PGC1ɑ Signaling Pathway by Ginger (Zingiber officinale Roscoe) Extract, and Its Major Active Component 6-Gingerol. J Food Sci 2019; 84:2101-2111. [PMID: 31369153 DOI: 10.1111/1750-3841.14723] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 06/04/2019] [Accepted: 06/10/2019] [Indexed: 01/10/2023]
Abstract
Several studies indicated that ginger (Zingiber officinale Roscoe) enhances thermogenesis and/or energy expenditure with which to interpret the beneficial effects of ginger on metabolic disorders. It is well known that mitochondrial activity plays an essential role in these processes. Thus, this study aimed to investigate the effect of ginger extract (GE) and its major components, 6-gingerol and 6-shogaol, on mitochondrial biogenesis and the underlying molecular mechanisms. Our results showed that GE at dose of 2 g/kg promoted oxygen consumption and intrascapular temperature in mice. The mitochondrial DNA (mtDNA) copy number in muscle and liver increased. Expression levels of oxidative phosphorylation (OXPHOS) related proteins and AMP-activated protein kinase ɑ/proliferator-activated receptor gamma coactivator 1 ɑ (AMPK/PGC1ɑ) signaling related proteins in the muscle, liver, and brown adipose tissue (BAT) increased as well. In HepG2 cells, GE at concentration of 2.5 and 5 mg/mL increased mitochondrial mass and mtDNA copy number. GE promoted ATP production, the activities of mitochondrial respiratory chain complex I and IV, and expression levels of OXPHOS complex related proteins and AMPK/PGC1ɑ signaling related proteins. The antagonist of AMPK eliminated partly the effect of GE on mitochondrial biogenesis. 6-Gingerol increased mitochondrial mass, mtDNA copy number and ATP production, and the activities of mitochondrial respiratory chain complexes in HepG2 cells as well. However, both 6-gingerol at high concentration of 200 µM and 6-shogaol at 10 to 200 µM inhibited cell viability. In conclusion, GE promoted mitochondrial biogenesis and improved mitochondrial functions via activation of AMPK-PGC1ɑ signaling pathway, and 6-gingerol other than 6-shogaol, may be the main active component. PRACTICAL APPLICATION: Ginger (Zingiber officinale Roscoe) is a food seasoning and also used as a medical plant in alternative medicine throughout the world. Here, we demonstrated that ginger extract (GE) promoted mitochondrial biogenesis and mitochondrial function via activation of AMPK-PGC1ɑ signaling pathway both in mice and in HepG2 cells, and 6-gingerol may be its main active component. Ginger, with anticipated safety, is expected to be a long-term used dietary supplement and be developed into a new remedy for mitochondrial dysfunctional disorders.
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Affiliation(s)
- Xiaohong Deng
- Dept. of Integrative Medicine, Huashan Hospital, Fudan Univ., No. 12, Wu Lu Mu Qi (Middle) Road, Shanghai, 200040, China
| | - Siwei Zhang
- Dept. of Traditional Chinese Medicine, Shenzhen People's Hospital, No. 1017, Dongmen (North) Road, Shenzhen, 518020, China
| | - Junzhen Wu
- Inst. of Antibiotics, Huashan Hospital, Fudan Univ., No. 12, Wu Lu Mu Qi (Middle) Road, Shanghai, 200040, China
| | - Xianjun Sun
- Dept. of Integrative Medicine, Huashan Hospital, Fudan Univ., No. 12, Wu Lu Mu Qi (Middle) Road, Shanghai, 200040, China
| | - Ziyin Shen
- Dept. of Integrative Medicine, Huashan Hospital, Fudan Univ., No. 12, Wu Lu Mu Qi (Middle) Road, Shanghai, 200040, China
| | - Jingcheng Dong
- Dept. of Integrative Medicine, Huashan Hospital, Fudan Univ., No. 12, Wu Lu Mu Qi (Middle) Road, Shanghai, 200040, China
| | - Jianhua Huang
- Dept. of Integrative Medicine, Huashan Hospital, Fudan Univ., No. 12, Wu Lu Mu Qi (Middle) Road, Shanghai, 200040, China
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22
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Benzoylaconine induces mitochondrial biogenesis in mice via activating AMPK signaling cascade. Acta Pharmacol Sin 2019; 40:658-665. [PMID: 30315253 DOI: 10.1038/s41401-018-0174-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 09/16/2018] [Indexed: 12/28/2022] Open
Abstract
The traditional Chinese medicine "Fuzi" (Aconiti Lateralis Radix Praeparata) and its three representative alkaloids, aconitine (AC), benzoylaconine (BAC), and aconine, have been shown to increase mitochondrial mass. Whether Fuzi has effect on mitochondrial biogenesis and the underlying mechanisms remain unclear. In the present study, we focused on the effect of BAC on mitochondrial biogenesis and the underlying mechanisms. We demonstrated that Fuzi extract and its three components AC, BAC, and aconine at a concentration of 50 μM significantly increased mitochondrial mass in HepG2 cells. BAC (25, 50, 75 μM) dose-dependently promoted mitochondrial mass, mtDNA copy number, cellular ATP production, and the expression of proteins related to the oxidative phosphorylation (OXPHOS) complexes in HepG2 cells. Moreover, BAC dose-dependently increased the expression of proteins involved in AMPK signaling cascade; blocking AMPK signaling abolished BAC-induced mitochondrial biogenesis. We further revealed that BAC treatment increased the cell viability but not the cell proliferation in HepG2 cells. These in vitro results were verified in mice treated with BAC (10 mg/kg per day, ip) for 7 days. We showed that BAC administration increased oxygen consumption rate in mice, but had no significant effect on intrascapular temperature. Meanwhile, BAC administration increased mtDNA copy number and OXPHOS-related protein expression and activated AMPK signaling in the heart, liver, and muscle. These results suggest that BAC induces mitochondrial biogenesis in mice through activating AMPK signaling cascade. BAC may have the potential to be developed as a novel remedy for some diseases associated with mitochondrial dysfunction.
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23
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Kumar R, Bhat TA, Walsh EM, Chaudhary AK, O'Malley J, Rhim JS, Wang J, Morrison CD, Attwood K, Bshara W, Mohler JL, Yadav N, Chandra D. Cytochrome c Deficiency Confers Apoptosome and Mitochondrial Dysfunction in African-American Men with Prostate Cancer. Cancer Res 2019; 79:1353-1368. [PMID: 30765600 DOI: 10.1158/0008-5472.can-18-2383] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 12/16/2018] [Accepted: 01/31/2019] [Indexed: 01/07/2023]
Abstract
Although African-American (AA) patients with prostate cancer tend to develop greater therapeutic resistance and faster prostate cancer recurrence compared with Caucasian-American (CA) men, the molecular mechanisms of this racial prostate cancer disparity remain undefined. In this study, we provide the first comprehensive evidence that cytochrome c deficiency in AA primary tumors and cancer cells abrogates apoptosome-mediated caspase activation and contributes to mitochondrial dysfunction, thereby promoting therapeutic resistance and prostate cancer aggressiveness in AA men. In AA prostate cancer cells, decreased nuclear accumulation of nuclear respiration factor 1 (Nrf1) and its subsequent loss of binding to the cytochrome c promoter mediated cytochrome c deficiency. The activation of cellular Myc (c-Myc) and NF-κB or inhibition of AKT prevented nuclear translocation of Nrf1. Genetic and pharmacologic inhibition of c-Myc and NF-κB or activation of AKT promoted Nrf1 binding to cytochrome c promoter, cytochrome c expression, caspase activation, and cell death. The lack of p-Drp1S616 in AA prostate cancer cells contributed to defective cytochrome c release and increased resistance to apoptosis, indicating that restoration of cytochrome c alone may be insufficient to induce effective apoptosis. Cytochrome c deficiency promoted the acquisition of glycolytic phenotypes and mitochondrial dysfunction, whereas cytochrome c restoration via inhibition of c-Myc and NF-κB or activation of AKT attenuated glycolysis in AA prostate cancer cells. Inhibition of c-Myc and NF-κB enhanced the efficacy of docetaxel in tumor xenografts. Therefore, restoring cytochrome c may overcome therapeutic resistance and prostate cancer aggressiveness in AA men. Overall, this study provides the first comprehensive experimental, mechanistic, and clinical evidence for apoptosome and mitochondrial dysfunction in prostate cancer racial disparity. SIGNIFICANCE: Mechanistic insights on prostate cancer health disparity among American men provide novel approaches to restore mitochondrial function, which can address therapeutic resistance and aggressiveness in African-American men with prostate cancer.
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Affiliation(s)
- Rahul Kumar
- Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Tariq A Bhat
- Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Elise M Walsh
- Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Ajay K Chaudhary
- Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Jordan O'Malley
- Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Johng S Rhim
- Center for Prostate Disease Research, Department of Surgery, Uniformed Services University of Health Sciences, Bethesda, Maryland
| | - Jianmin Wang
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Carl D Morrison
- Department of Pathology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Kristopher Attwood
- Department of Biostatistics, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Wiam Bshara
- Pathology Resource Network, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - James L Mohler
- Department of Urology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Neelu Yadav
- Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Dhyan Chandra
- Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, New York.
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24
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Abstract
The mitochondrial genome encodes proteins essential for the oxidative phosphorylation and, consequently, for proper mitochondrial function. Its localization and, possibly, structural organization contribute to higher DNA damage accumulation, when compared to the nuclear genome. In addition, the mitochondrial genome mutates at rates several times higher than the nuclear, although the causal relationship between these events are not clearly established. Maintaining mitochondrial DNA stability is critical for cellular function and organismal fitness, and several pathways contribute to that, including damage tolerance and bypass, degradation of damaged genomes and DNA repair. Despite initial evidence suggesting that mitochondria lack DNA repair activities, most DNA repair pathways have been at least partially characterized in mitochondria from several model organisms, including humans. In this chapter, we review what is currently known about how the main DNA repair pathways operate in mitochondria and contribute to mitochondrial DNA stability, with focus on the enzymology of mitochondrial DNA repair.
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Affiliation(s)
- Rebeca R Alencar
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Caio M P F Batalha
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Thiago S Freire
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Nadja C de Souza-Pinto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.
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25
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Jeong JS, Piao Y, Kang S, Son M, Kang YC, Du XF, Ryu J, Cho YW, Jiang HH, Oh MS, Hong SP, Oh YJ, Pak YK. Triple herbal extract DA-9805 exerts a neuroprotective effect via amelioration of mitochondrial damage in experimental models of Parkinson's disease. Sci Rep 2018; 8:15953. [PMID: 30374025 PMCID: PMC6206089 DOI: 10.1038/s41598-018-34240-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 10/10/2018] [Indexed: 12/13/2022] Open
Abstract
Moutan cortex, Angelica Dahurica root, and Bupleurum root are traditional herbal medicines used in Asian countries to treat various diseases caused by oxidative stress or inflammation. Parkinson's disease (PD) has been associated with mitochondrial dysfunction, but no effective treatment for mitochondrial dysfunction has yet been identified. In this study we investigated the neuroprotective effects of the triple herbal extract DA-9805 in experimental models of PD. DA-9805 was prepared by extracting three dried plant materials (Moutan cortex, Angelica Dahurica root, and Bupleurum root in a 1:1:1 mixture) with 90% ethanol on a stirring plate for 24 h at room temperature and fingerprinted using high-performance liquid chromatography. 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) and its active metabolite 1-methyl-4-phenylpyridinium (MPP+), which both exert neurotoxic effects on dopaminergic neurons by inhibiting mitochondrial oxidative phosphorylation (OXPHOS) complex I, were used to make experimental models of PD. In MPP+-treated SH-SY5Y cells, DA-9805 ameliorated the suppression of tyrosine hydroxylase expression and mitochondrial damage on OXPHOS complex 1 activity, mitochondrial membrane potential, reactive oxygen species (ROS) generation, and oxygen consumption rate. In the MPTP-induced subacute PD model mice, oral administration of DA-9805 recovered dopamine content as well as bradykinesia, as determined by the rotarod test. DA-9805 protected against neuronal damage in the substantia nigra pars compacta (SNpc) and striatum. In both in vitro and in vivo models of PD, DA-9805 normalized the phosphorylation of AKT at S473 and T308 on the insulin signaling pathway and the expression of mitochondria-related genes. These results demonstrate that the triple herbal extract DA-9805 showed neuroprotective effects via alleviating mitochondria damage in experimental models of PD. We propose that DA-9805 may be a suitable candidate for disease-modifying therapeutics for PD.
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Affiliation(s)
- Jin Seok Jeong
- R&D Center of Dong-A ST, Yong-in, Kyungki-do, 17073, Korea
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea
| | - Ying Piao
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, 02447, Korea
- Department of Emergency, Yanbian University Hospital, Yanji City, Jilin Province, 133000, China
| | - Sora Kang
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, 02447, Korea
| | - Minuk Son
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, 02447, Korea
| | - Young Cheol Kang
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, 02447, Korea
| | - Xiao Fei Du
- R&D Center of Dong-A ST, Yong-in, Kyungki-do, 17073, Korea
| | - Jayoung Ryu
- R&D Center of Dong-A ST, Yong-in, Kyungki-do, 17073, Korea
| | | | - Hai-Hua Jiang
- R&D Center of Dong-A ST, Yong-in, Kyungki-do, 17073, Korea
| | - Myung Sook Oh
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, 02447, Korea
| | - Seon-Pyo Hong
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, 02447, Korea
| | - Young J Oh
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea.
| | - Youngmi Kim Pak
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul, 02447, Korea.
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul, 02447, Korea.
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26
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Modulation of mitochondrial phenotypes by endurance exercise contributes to neuroprotection against a MPTP-induced animal model of PD. Life Sci 2018; 209:455-465. [DOI: 10.1016/j.lfs.2018.08.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/11/2018] [Accepted: 08/19/2018] [Indexed: 12/31/2022]
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27
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Monti DM, Ferraro G, Petruk G, Maiore L, Pane F, Amoresano A, Cinellu MA, Merlino A. Ferritin nanocages loaded with gold ions induce oxidative stress and apoptosis in MCF-7 human breast cancer cells. Dalton Trans 2018; 46:15354-15362. [PMID: 29072740 DOI: 10.1039/c7dt02370g] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Two anticancer gold(iii) compounds, Au2phen and Auoxo4, were encapsulated within a ferritin nanocage. The gold-compound loaded proteins were characterized by UV-Vis spectroscopy, inductively coupled plasma mass spectrometry and circular dichroism. X-ray crystallography shows that the compounds degrade upon encapsulation and gold(i) ions bind Ft within the cage, close to the side chains of Cys126. The gold-encapsulated nanocarriers are cytotoxic to human cancer cells. Au(i)-loaded Ft, obtained upon the encapsulation of Au2phen within the cage, induces oxidative stress activation, which finally leads to apoptosis in MCF-7 cells.
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Affiliation(s)
- Daria Maria Monti
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126, Napoli, Italy.
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28
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Zhang GM, Deng MT, Lei ZH, Wan YJ, Nie HT, Wang ZY, Fan YX, Wang F, Zhang YL. Effects of NRF1 on steroidogenesis and apoptosis in goat luteinized granulosa cells. Reproduction 2018. [PMID: 28624767 DOI: 10.1530/rep-16-0583] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
During goat follicular development, abnormal expression of nuclear respiratory factor 1 (NRF1) in granulosa cells may drive follicular atresia with unknown regulatory mechanisms. In this study, we investigated the effects of NRF1 on steroidogenesis and cell apoptosis by overexpressing or silencing it in goat luteinized granulosa cells (LGCs). Results showed that knockdown of NRF1 expression significantly inhibited the expression of STAR and CYP19A1, which are involved in sex steroid hormones synthesis, and led to lower estrogen levels. Knockdown of NRF1 resulted in an increased percentage of apoptosis, probably due to the release of cytochrome c from mitochondria, accompanied by upregulating mRNA and protein levels of apoptosis-related markers BAX, caspase 3 and caspase 9. These data indicate that NRF1 might be related with steroidogenesis and cell apoptosis. Furthermore, NRF1 silence reduced mitochondrial transcription factor A (TFAM) transcription activity, mtDNA copy number and ATP level. Simultaneously, knockdown of NRF1 suppressed the transcription and translation levels of SOD, GPx and CAT, decreased glutathione level and increased 8-OHdG level. However, the overexpression of NRF1 in LGCs or gain of TFAM in NRF1 silenced LGCs increased the expression of genes involved in mitochondrial function and biogenesis, and elevated the antioxidant stress system and steroids synthesis. Taken together, aberrant expression of NRF1 could induce mitochondrial dysfunction and disturb the cellular redox balance, which lead to disturbance of steroid hormone synthesis, and trigger LGC apoptosis through the mitochondria-dependent pathway. These findings will be helpful for understanding the role of NRF1 in goat ovarian follicular development and atresia.
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Affiliation(s)
- Guo-Min Zhang
- College of Veterinary MedicineNanjing Agricultural University, Nanjing, China.,Jiangsu Livestock Embryo Engineering LaboratoryNanjing Agricultural University, Nanjing, China
| | - Ming-Tian Deng
- Jiangsu Livestock Embryo Engineering LaboratoryNanjing Agricultural University, Nanjing, China
| | - Zhi-Hai Lei
- College of Veterinary MedicineNanjing Agricultural University, Nanjing, China
| | - Yong-Jie Wan
- Jiangsu Livestock Embryo Engineering LaboratoryNanjing Agricultural University, Nanjing, China
| | - Hai-Tao Nie
- Jiangsu Livestock Embryo Engineering LaboratoryNanjing Agricultural University, Nanjing, China
| | - Zi-Yu Wang
- Jiangsu Livestock Embryo Engineering LaboratoryNanjing Agricultural University, Nanjing, China
| | - Yi-Xuan Fan
- Jiangsu Livestock Embryo Engineering LaboratoryNanjing Agricultural University, Nanjing, China
| | - Feng Wang
- Jiangsu Livestock Embryo Engineering LaboratoryNanjing Agricultural University, Nanjing, China
| | - Yan-Li Zhang
- Jiangsu Livestock Embryo Engineering LaboratoryNanjing Agricultural University, Nanjing, China
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29
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Kang I, Chu CT, Kaufman BA. The mitochondrial transcription factor TFAM in neurodegeneration: emerging evidence and mechanisms. FEBS Lett 2018; 592:793-811. [PMID: 29364506 PMCID: PMC5851836 DOI: 10.1002/1873-3468.12989] [Citation(s) in RCA: 156] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 01/18/2018] [Accepted: 01/19/2018] [Indexed: 12/30/2022]
Abstract
The mitochondrial transcription factor A, or TFAM, is a mitochondrial DNA (mtDNA)-binding protein essential for genome maintenance. TFAM functions in determining the abundance of the mitochondrial genome by regulating packaging, stability, and replication. More recently, TFAM has been shown to play a central role in the mtDNA stress-mediated inflammatory response. Emerging evidence indicates that decreased mtDNA copy number is associated with several aging-related pathologies; however, little is known about the association of TFAM abundance and disease. In this Review, we evaluate the potential associations of altered TFAM levels or mtDNA copy number with neurodegeneration. We also describe potential mechanisms by which mtDNA replication, transcription initiation, and TFAM-mediated endogenous danger signals may impact mitochondrial homeostasis in Alzheimer, Huntington, Parkinson, and other neurodegenerative diseases.
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Affiliation(s)
- Inhae Kang
- Department of Food Science and Nutrition, Jeju National University, Jeju, Korea
- Division of Cardiology, Vascular Medicine Institute, Department of Medicine Center for Metabolic and Mitochondrial Medicine (C3M), University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Charleen T. Chu
- Department of Pathology, Center for Neuroscience, Pittsburgh Institute for Neurodegenerative Diseases, Conformational Protein Diseases Center, and the McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Brett A. Kaufman
- Division of Cardiology, Vascular Medicine Institute, Department of Medicine Center for Metabolic and Mitochondrial Medicine (C3M), University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
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30
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Zeissler ML, Eastwood J, McCorry K, Hanemann CO, Zajicek JP, Carroll CB. Delta-9-tetrahydrocannabinol protects against MPP+ toxicity in SH-SY5Y cells by restoring proteins involved in mitochondrial biogenesis. Oncotarget 2018; 7:46603-46614. [PMID: 27366949 PMCID: PMC5216821 DOI: 10.18632/oncotarget.10314] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 05/09/2016] [Indexed: 11/25/2022] Open
Abstract
Proliferator-activated receptor γ (PPARγ) activation can result in transcription of proteins involved in oxidative stress defence and mitochondrial biogenesis which could rescue mitochondrial dysfunction in Parkinson's disease (PD).The PPARγ agonist pioglitazone is protective in models of PD; however side effects have limited its clinical use. The cannabinoid Δ9-tetrahydrocannabinol (Δ9-THC) may have PPARγ dependent anti-oxidant properties. Here we investigate the effects of Δ9-THC and pioglitazone on mitochondrial biogenesis and oxidative stress. Differentiated SH-SY5Y neuroblastoma cells were exposed to the PD relevant mitochondrial complex 1 inhibitor 1-methyl-4-phenylpyridinium iodide (MPP+). We found that only Δ9-THC was able to restore mitochondrial content in MPP+ treated SH-SY5Y cells in a PPARγ dependent manner by increasing expression of the PPARγ co-activator 1α (PGC-1α), the mitochondrial transcription factor (TFAM) as well as mitochondrial DNA content. Co-application of Δ9-THC with pioglitazone further increased the neuroprotection against MPP+ toxicity as compared to pioglitazone treatment alone. Furthermore, using lentiviral knock down of the PPARγ receptor we showed that, unlike pioglitazone, Δ9-THC resulted in a PPARγ dependent reduction of MPP+ induced oxidative stress. We therefore suggest that, in contrast to pioglitazone, Δ9-THC mediates neuroprotection via PPARγ-dependent restoration of mitochondrial content which may be beneficial for PD treatment.
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Affiliation(s)
- Marie-Louise Zeissler
- Plymouth University Peninsula Schools of Medicine and Dentistry, Plymouth, PL6 8BU, United Kingdom
| | - Jordan Eastwood
- Plymouth University Peninsula Schools of Medicine and Dentistry, Plymouth, PL6 8BU, United Kingdom
| | - Kieran McCorry
- Plymouth University Peninsula Schools of Medicine and Dentistry, Plymouth, PL6 8BU, United Kingdom
| | - C Oliver Hanemann
- Plymouth University Peninsula Schools of Medicine and Dentistry, Plymouth, PL6 8BU, United Kingdom
| | - John P Zajicek
- School of Medicine, Medical and Biological Sciences, University of St Andrews, North Haugh, St Andrews, KY16 9TF, United Kingdom
| | - Camille B Carroll
- Plymouth University Peninsula Schools of Medicine and Dentistry, Plymouth, PL6 8BX, United Kingdom
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Terron A, Bal-Price A, Paini A, Monnet-Tschudi F, Bennekou SH, Leist M, Schildknecht S. An adverse outcome pathway for parkinsonian motor deficits associated with mitochondrial complex I inhibition. Arch Toxicol 2018; 92:41-82. [PMID: 29209747 PMCID: PMC5773657 DOI: 10.1007/s00204-017-2133-4] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 11/22/2017] [Indexed: 12/21/2022]
Abstract
Epidemiological studies have observed an association between pesticide exposure and the development of Parkinson's disease, but have not established causality. The concept of an adverse outcome pathway (AOP) has been developed as a framework for the organization of available information linking the modulation of a molecular target [molecular initiating event (MIE)], via a sequence of essential biological key events (KEs), with an adverse outcome (AO). Here, we present an AOP covering the toxicological pathways that link the binding of an inhibitor to mitochondrial complex I (i.e., the MIE) with the onset of parkinsonian motor deficits (i.e., the AO). This AOP was developed according to the Organisation for Economic Co-operation and Development guidelines and uploaded to the AOP database. The KEs linking complex I inhibition to parkinsonian motor deficits are mitochondrial dysfunction, impaired proteostasis, neuroinflammation, and the degeneration of dopaminergic neurons of the substantia nigra. These KEs, by convention, were linearly organized. However, there was also evidence of additional feed-forward connections and shortcuts between the KEs, possibly depending on the intensity of the insult and the model system applied. The present AOP demonstrates mechanistic plausibility for epidemiological observations on a relationship between pesticide exposure and an elevated risk for Parkinson's disease development.
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Affiliation(s)
| | | | - Alicia Paini
- European Commission Joint Research Centre, Ispra, Italy
| | | | | | - Marcel Leist
- In Vitro Toxicology and Biomedicine, Department of Biology, University of Konstanz, Universitätsstr. 10, PO Box M657, 78457, Konstanz, Germany
| | - Stefan Schildknecht
- In Vitro Toxicology and Biomedicine, Department of Biology, University of Konstanz, Universitätsstr. 10, PO Box M657, 78457, Konstanz, Germany.
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32
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Chen CY, Chen J, He L, Stiles BL. PTEN: Tumor Suppressor and Metabolic Regulator. Front Endocrinol (Lausanne) 2018; 9:338. [PMID: 30038596 PMCID: PMC6046409 DOI: 10.3389/fendo.2018.00338] [Citation(s) in RCA: 323] [Impact Index Per Article: 53.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 06/05/2018] [Indexed: 12/19/2022] Open
Abstract
Phosphatase and Tensin Homolog deleted on Chromosome 10 (PTEN) is a dual phosphatase with both protein and lipid phosphatase activities. PTEN was first discovered as a tumor suppressor with growth and survival regulatory functions. In recent years, the function of PTEN as a metabolic regulator has attracted significant attention. As the lipid phosphatase that dephosphorylates phosphatidylinositol-3, 4, 5-phosphate (PIP3), PTEN reduces the level of PIP3, a critical 2nd messenger mediating the signal of not only growth factors but also insulin. In this review, we introduced the discovery of PTEN, the PTEN-regulated canonical and nuclear signals, and PTEN regulation. We then focused on the role of PTEN and PTEN-regulated signals in metabolic regulation. This included the role of PTEN in glycolysis, gluconeogenesis, glycogen synthesis, lipid metabolism as well as mitochondrial metabolism. We also included how PTEN and PTEN regulated metabolic functions may act paradoxically toward insulin sensitivity and tumor metabolism and growth. Further understanding of how PTEN regulates metabolism and how such regulations lead to different biological outcomes is necessary for interventions targeting at the PTEN-regulated signals in either cancer or diabetes treatment.
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Affiliation(s)
- Chien-Yu Chen
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, United States
| | - Jingyu Chen
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, United States
| | - Lina He
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, United States
| | - Bangyan L. Stiles
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, United States
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
- *Correspondence: Bangyan L. Stiles
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33
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Park WH, Kang S, Lee HK, Salihovic S, Bavel BV, Lind PM, Pak YK, Lind L. Relationships between serum-induced AhR bioactivity or mitochondrial inhibition and circulating polychlorinated biphenyls (PCBs). Sci Rep 2017; 7:9383. [PMID: 28839207 PMCID: PMC5571204 DOI: 10.1038/s41598-017-09774-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 07/28/2017] [Indexed: 12/13/2022] Open
Abstract
Metabolic syndrome and mitochondrial dysfunction have been linked to elevated serum levels of persistent organic pollutants (POPs). However, it is not clear which specific POPs contribute to aryl hydrocarbon receptor (AhR)-dependent bioactivity or inhibit mitochondrial function in human subjects. Here, we measured the cumulative bioactivity of AhR ligand mixture (AhR bioactivity) and the effects on mitochondrial function (ATP concentration) in recombinant Hepa1c1c7 cells incubated with raw serum samples obtained from 911 elderly subjects in the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) cohort. Plasma concentrations of 30 POPs and plastic chemicals have previously been determined in the same PIVUS subjects. Linear regression analysis demonstrated that total toxic equivalence (TEQ) values and polychlorinated biphenyls (PCBs) were significantly correlated with AhR bioactivity (positively) and ATP concentration (negatively). Serum AhR bioactivities were positively associated with some PCBs, regardless of their dioxin-like properties, but only dioxin-like PCBs stimulated AhR bioactivity. By contrast, PCBs mediated a reduction in ATP content independently of their dioxin-like properties. This study suggests that AhR bioactivity and ATP concentrations in serum-treated cells may be valuable surrogate biomarkers of POP exposure and could be useful for the estimation of the effects of POPs on human health.
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Affiliation(s)
- Wook Ha Park
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul, 02447, Korea
| | - Sora Kang
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul, 02447, Korea
| | - Hong Kyu Lee
- Department of Internal Medicine, College of Medicine, Eulji University, Seoul, 01830, Korea
| | - Samira Salihovic
- MTM Research Centre, School of Science and Technology, Örebro University, Örebro, SE-701 82, Sweden
| | - Bert van Bavel
- MTM Research Centre, School of Science and Technology, Örebro University, Örebro, SE-701 82, Sweden
| | - P Monica Lind
- Occupational and Environmental Medicine, Uppsala University, Uppsala, SE-751 05, Sweden
| | - Youngmi Kim Pak
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul, 02447, Korea.
| | - Lars Lind
- Department of Medicine, Cardiovascular Epidemiology, Uppsala University, SE-751 05, Uppsala, Sweden.
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Ye Q, Chen C, Si E, Cai Y, Wang J, Huang W, Li D, Wang Y, Chen X. Mitochondrial Effects of PGC-1alpha Silencing in MPP + Treated Human SH-SY5Y Neuroblastoma Cells. Front Mol Neurosci 2017; 10:164. [PMID: 28611589 PMCID: PMC5447087 DOI: 10.3389/fnmol.2017.00164] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 05/11/2017] [Indexed: 12/30/2022] Open
Abstract
The dopaminergic neuron degeneration and loss that occurs in Parkinson’s disease (PD) has been tightly linked to mitochondrial dysfunction. Although the aged-related cause of the mitochondrial defect observed in PD patients remains unclear, nuclear genes are of potential importance to mitochondrial function. Human peroxisome proliferator-activated receptor γ coactivator-1alpha (PGC-1α) is a multi-functional transcription factor that tightly regulates mitochondrial biogenesis and oxidative capacity. The goal of the present study was to explore the potential pathogenic effects of interference by the PGC-1α gene on N-methyl-4-phenylpyridinium ion (MPP+)-induced SH-SY5Y cells. We utilized RNA interference (RNAi) technology to probe the pathogenic consequences of inhibiting PGC-1α in the SH-SY5Y cell line. Remarkably, a reduction in PGC-1α resulted in the reduction of mitochondrial membrane potential, intracellular ATP content and intracellular H2O2 generation, leading to the translocation of cytochrome c (cyt c) to the cytoplasm in the MPP+-induced PD cell model. The expression of related proteins in the signaling pathway (e.g., estrogen-related receptor α (ERRα), nuclear respiratory factor 1 (NRF-1), NRF-2 and Peroxisome proliferator-activated receptor γ (PPARγ)) also decreased. Our finding indicates that small interfering RNA (siRNA) interference targeting the PGC-1α gene could inhibit the function of mitochondria in several capacities and that the PGC-1α gene may modulate mitochondrial function by regulating the expression of ERRα, NRF-1, NRF-2 and PPARγ. Thus, PGC-1α can be considered a potential therapeutic target for PD.
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Affiliation(s)
- Qinyong Ye
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union HospitalFuzhou, China.,Key Laboratory of Brain Aging and Neurodegenerative Diseases, Fujian Key Laboratory of Molecular Neurology, Fujian Medical UniversityFuzhou, China
| | - Chun Chen
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union HospitalFuzhou, China
| | - Erwang Si
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union HospitalFuzhou, China
| | - Yousheng Cai
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union HospitalFuzhou, China
| | - Juhua Wang
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union HospitalFuzhou, China
| | - Wanling Huang
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union HospitalFuzhou, China
| | - Dongzhu Li
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union HospitalFuzhou, China
| | - Yingqing Wang
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union HospitalFuzhou, China
| | - Xiaochun Chen
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union HospitalFuzhou, China.,Key Laboratory of Brain Aging and Neurodegenerative Diseases, Fujian Key Laboratory of Molecular Neurology, Fujian Medical UniversityFuzhou, China
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35
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miR-24-mediated knockdown of H2AX damages mitochondria and the insulin signaling pathway. Exp Mol Med 2017; 49:e313. [PMID: 28386126 PMCID: PMC5420797 DOI: 10.1038/emm.2016.174] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 11/02/2016] [Accepted: 11/06/2016] [Indexed: 01/02/2023] Open
Abstract
Mitochondrial deficits or altered expressions of microRNAs are associated with the pathogenesis of various diseases, and microRNA-operated control of mitochondrial activity has been reported. Using a retrovirus-mediated short-hairpin RNA (shRNA) system, we observed that miR-24-mediated H2AX knockdown (H2AX-KD) impaired both mitochondria and the insulin signaling pathway. The overexpression of miR-24 decreased mitochondrial H2AX and disrupted mitochondrial function, as indicated by the ATP content, membrane potential and oxygen consumption. Similar mitochondrial damage was observed in shH2AX-mediated specific H2AX-KD cells. The H2AX-KD reduced the expression levels of mitochondrial transcription factor A (TFAM) and mitochondrial DNA-dependent transcripts. H2AX-KD mitochondria were swollen, and their cristae were destroyed. H2AX-KD also blocked the import of precursor proteins into mitochondria and the insulin-stimulated phosphorylation of IRS-1 (Y632) and Akt (S473 and T308). The rescue of H2AX, but not the nuclear form of ΔC24-H2AX, restored all features of miR-24- or shH2AX-mediated impairment of mitochondria. Hepatic miR-24 levels were significantly increased in db/db and ob/ob mice. A strong feedback loop may be present among miR-24, H2AX, mitochondria and the insulin signaling pathway. Our findings suggest that H2AX-targeting miR-24 may be a novel negative regulator of mitochondrial function and is implicated in the pathogenesis of insulin resistance.
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36
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Alterations of mitochondrial biogenesis in chronic lymphocytic leukemia cells with loss of p53. Mitochondrion 2016; 31:33-39. [PMID: 27650502 DOI: 10.1016/j.mito.2016.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 09/06/2016] [Accepted: 09/16/2016] [Indexed: 01/24/2023]
Abstract
Deletion of chromosome 17p with a loss of p53 is an unfavorable cytogenetic change in chronic lymphocytic leukemia (CLL) with poor clinical outcome. Since p53 affects mitochondrial function and integrity, we examined possible mitochondrial changes in CLL mice with TCL1-Tg/p53-/- and TCL1-Tg/p53+/+ genotypes and in primary leukemia cells from CLL patients with or without 17p-deletion. Although the expression of mitochondrial COX1, ND2, and ND6 decreased in p53-/-CLL cells, there was an increase in mitochondrial biogenesis as evidenced by higher mitochondrial mass and mtDNA copy number associated with an elevated expression of TFAM and PGC-1α. Surprisingly, the overall mitochondrial respiratory activity and maximum reserved capacity increased in p53-/- CLL cells. Our study suggests that leukemia cells lacking p53 seem able to maintain respiratory function by compensatory increase in mitochondrial biogenesis.
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37
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Ye Q, Huang W, Li D, Si E, Wang J, Wang Y, Chen C, Chen X. Overexpression of PGC-1α Influences Mitochondrial Signal Transduction of Dopaminergic Neurons. Mol Neurobiol 2016; 53:3756-3770. [PMID: 26141122 DOI: 10.1007/s12035-015-9299-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 06/09/2015] [Indexed: 12/21/2022]
Abstract
Parkinson's disease (PD) is a common neurodegenerative disease in the elderly. Mitochondrial dysfunction plays an important role in the pathogenesis of PD. Peroxisome proliferator-activated receptor γ coactivator 1α (PGC-1α) is a powerful transcription factor, interacting with multiple transcription factors and widely involving in the regulation of mitochondrial biogenesis, oxidative stress, and other processes. The present study investigated the neuroprotective effects and signal transduction mechanisms of the overexpression of PGC-1α on N-methyl-4-phenylpyridinium ion (MPP(+))-induced mitochondrial damage in SH-SY5Y cell, establishing the cell model of overexpression of PGC-1α and the cell model of PD by using adenoviral vectors and MPP(+). 3-(4,5-Dimethylthiazol-2yl)-2,5-diphenyltetrazolium bromide thiazolyl blue (MTT) assay was used to investigate the effects of MPP(+) and adenovirus on the cell viability of SH-SY5Y cells and the cell viability of experimental groups. Western blot and real-time PCR analysis were used to detect the expression of PGC-1α. Flow cytometry and ELISA were used to detect mitochondrial membrane potential and the level of cytochrome C, respectively. The level of intracellular ATP and H2O2 was measured by multifunctional fluorescence microplate. Western blot analysis and real-time PCR were used to observe the expression of estrogen-related receptor α (ERRα), peroxisome proliferator-activated receptor γ (PPARγ), nuclear respiratory factor (NRF)-1, and NRF-2. Confocal fluorescence analysis was used to observe subcellular localization of PGC-1α in SH-SY5Y cells under the intervention of MPP(+). The expression of PGC-1α messenger RNA and protein significantly increased in Adv-PGC-1α + GFP groups, compared with the control and Adv-GFP groups (P < 0.01). The overexpression of PGC-1α could increase mitochondrial membrane potential, reduce the release of mitochondrial cytochrome C, inhibit H2O2 production, and improve the level of ATP in SH-SY5Y cells. The trend of expression of ERRα, PPARγ, and NRF-1 was more consistent with PGC-1α, the most remarkable change is ERRα, but the expression of NRF-2 has no significant changes. Under the gradually increasing concentration of MPP(+), microscale PGC-1α gradually appeared in the cytoplasm of SH-SY5Y cells. The overexpression of PGC-1α can inhibit MPP(+)-induced mitochondrial damage in SH-SY5Y cells, and PGC-1α may realize the neuroprotective effects via the ERRα, PPARγ, and NRF-1 pathway.
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Affiliation(s)
- Qinyong Ye
- Department of Neurology, Fujian Institute of Geriatrics, The Affiliated Union Hospital of Fujian Medical University, 29 Xinquan Road, Fuzhou, Fujian, 350001, China.
| | - Wanling Huang
- Department of Neurology, Fujian Institute of Geriatrics, The Affiliated Union Hospital of Fujian Medical University, 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Dongzhu Li
- Department of Neurology, Fujian Institute of Geriatrics, The Affiliated Union Hospital of Fujian Medical University, 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Erwang Si
- Department of Neurology, Fujian Institute of Geriatrics, The Affiliated Union Hospital of Fujian Medical University, 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Juhua Wang
- Department of Neurology, Fujian Institute of Geriatrics, The Affiliated Union Hospital of Fujian Medical University, 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Yingqing Wang
- Department of Neurology, Fujian Institute of Geriatrics, The Affiliated Union Hospital of Fujian Medical University, 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Chun Chen
- Department of Neurology, Fujian Institute of Geriatrics, The Affiliated Union Hospital of Fujian Medical University, 29 Xinquan Road, Fuzhou, Fujian, 350001, China
| | - Xiaochun Chen
- Department of Neurology, Fujian Institute of Geriatrics, The Affiliated Union Hospital of Fujian Medical University, 29 Xinquan Road, Fuzhou, Fujian, 350001, China
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38
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Li L, Xiao L, Hou Y, He Q, Zhu J, Li Y, Wu J, Zhao J, Yu S, Zhao Y. Sestrin2 Silencing Exacerbates Cerebral Ischemia/Reperfusion Injury by Decreasing Mitochondrial Biogenesis through the AMPK/PGC-1α Pathway in Rats. Sci Rep 2016; 6:30272. [PMID: 27453548 PMCID: PMC4958997 DOI: 10.1038/srep30272] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 06/29/2016] [Indexed: 01/01/2023] Open
Abstract
Sestrin2 (Sesn2) exerts neuroprotective properties in some neurodegenerative diseases. However, the role of Sesn2 in stroke is unclear. The AMP-activated protein kinase/peroxisome proliferator-activated receptor γ coactivator-1α (AMPK/PGC-1α) pathway plays an important role in regulating mitochondrial biogenesis, which helps prevent cerebral ischemia/reperfusion (I/R) injury. Here, we aimed to determine whether Sesn2 alleviated I/R damage by regulating mitochondrial biogenesis through the AMPK/PGC-1α signaling pathway. To be able to test this, Sprague-Dawley rats were subjected to middle cerebral artery occlusion (MCAO) for 1 h with Sesn2 silencing. At 24 h after reperfusion, we found that neurological deficits were exacerbated, infarct volume was enlarged, and oxidative stress and neuronal damage were greater in the Sesn2 siRNA group than in the MCAO group. To explore protective mechanisms, an AMPK activator was used. Expression levels of Sesn2, p-AMPK, PGC-1α, NRF-1, TFAM, SOD2, and UCP2 were significantly increased following cerebral I/R. However, upregulation of these proteins was prevented by Sesn2 small interfering RNA (siRNA). In contrast, activation of AMPK with 5′-aminoimidazole-4-carboxamide riboside weakened the effects of Sesn2 siRNA. These results suggest that Sesn2 silencing may suppress mitochondrial biogenesis, reduce mitochondrial biological activity, and finally aggravate cerebral I/R injury through inhibiting the AMPK/PGC-1α pathway.
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Affiliation(s)
- Lingyu Li
- Department of Pathology, Chongqing Medical University, Chongqing, People's Republic of China.,Institute of Neuroscience, Chongqing Medical University, Chongqing, PR China
| | - Lina Xiao
- Department of Pathology, Chongqing Medical University, Chongqing, People's Republic of China
| | - Yanghao Hou
- Institute of Neuroscience, Chongqing Medical University, Chongqing, PR China.,Department of Pathophysiology, Chongqing Medical University, Chongqing, People's Republic of China
| | - Qi He
- Institute of Neuroscience, Chongqing Medical University, Chongqing, PR China.,Department of Pathophysiology, Chongqing Medical University, Chongqing, People's Republic of China
| | - Jin Zhu
- Department of Pathology, Chongqing Medical University, Chongqing, People's Republic of China.,Institute of Neuroscience, Chongqing Medical University, Chongqing, PR China
| | - Yixin Li
- Department of Pathology, Chongqing Medical University, Chongqing, People's Republic of China.,Institute of Neuroscience, Chongqing Medical University, Chongqing, PR China
| | - Jingxian Wu
- Department of Pathology, Chongqing Medical University, Chongqing, People's Republic of China.,Institute of Neuroscience, Chongqing Medical University, Chongqing, PR China
| | - Jing Zhao
- Institute of Neuroscience, Chongqing Medical University, Chongqing, PR China.,Department of Pathophysiology, Chongqing Medical University, Chongqing, People's Republic of China
| | - Shanshan Yu
- Department of Pathology, Chongqing Medical University, Chongqing, People's Republic of China.,Institute of Neuroscience, Chongqing Medical University, Chongqing, PR China
| | - Yong Zhao
- Department of Pathology, Chongqing Medical University, Chongqing, People's Republic of China.,Institute of Neuroscience, Chongqing Medical University, Chongqing, PR China
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39
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Lee G, Joo JC, Choi BY, Lindroth AM, Park SJ, Park YJ. Neuroprotective effects of Paeonia Lactiflora extract against cell death of dopaminergic SH-SY5Y cells is mediated by epigenetic modulation. Altern Ther Health Med 2016; 16:208. [PMID: 27405852 PMCID: PMC4942901 DOI: 10.1186/s12906-016-1205-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 06/15/2016] [Indexed: 11/20/2022]
Abstract
Background The Paeonia lactiflora extract (PLE) has been reported to have neuroprotective effect against neurodegeneration that are induced by cellular stress such as oxidative stress. Its underlying mechanisms, however, remain unclear. In latest decades, emerging evidence has suggested that epigenetic mechanisms play a key role in gene regulation in response to the cellular stress. We investigated whether epigenetic modulation was involved in neuronal cell death by the neurotoxicant, 1-Methyl-4-phenylpyridinium (MPP+), and the neuroprotective effect of PLE. Methods Differentiated SH-SY5Y, which is a well-established dopaminergic cell line model, was treated with 0 ~ 200 μg/ml PLE for 4 h prior to MPP+ treatment. The effect of PLE on cell viability was determined by MTT assays. Gene expression levels of oxidative stress responsive genes, such as Heme oxygenase 1 (HMOX1), and histone modifiers, such as histone acetyltransferases (HATs) and deacetylases (HDACs) were measured by quantitative RT PCR. In order to investigate the changes in epigenetic modifications, the acetylated lysine 9 (H3K9ac) and lysine 27 (H3K27ac) of Histone H3 were measured by western blot using histones extracted from the cells. Results MPP+-induced cell death in SH-SY5Y cells was significantly reduced by PLE pretreatment in a dose-dependent manner, indicating the potent neuroprotective effects of PLE. It was accompanied by induced expression of HMOX1. MPP+ treatment increased the expression of HATs and consistently increased H3K9ac and H3K27ac of Histone H3. PLE pretreatment impeded the changes in H3K9ac and H3K27ac, coincided with increased expression of HDAC5 without changes in HAT expression. Conclusions The results suggested that MPP+-induced cell death in the dopaminergic SH-SY5Y cells was related with transcriptional induction of HATs and increased histone H3 acetylation and that PLE might prevent the cells from MPP+-induced cell death via tempering histone H3 acetylation.
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40
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Pharmacological modulation of HDAC1 and HDAC6 in vivo in a zebrafish model: Therapeutic implications for Parkinson’s disease. Pharmacol Res 2016; 103:328-39. [DOI: 10.1016/j.phrs.2015.11.024] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 11/27/2015] [Accepted: 11/29/2015] [Indexed: 11/22/2022]
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41
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Cai N, Li Y, Chang S, Liang J, Lin C, Zhang X, Liang L, Hu J, Chan W, Kendler KS, Malinauskas T, Huang GJ, Li Q, Mott R, Flint J. Genetic Control over mtDNA and Its Relationship to Major Depressive Disorder. Curr Biol 2015; 25:3170-7. [PMID: 26687620 PMCID: PMC4691240 DOI: 10.1016/j.cub.2015.10.065] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 10/07/2015] [Accepted: 10/28/2015] [Indexed: 12/25/2022]
Abstract
Control over the number of mtDNA molecules per cell appears to be tightly regulated, but the mechanisms involved are largely unknown. Reversible alterations in the amount of mtDNA occur in response to stress suggesting that control over the amount of mtDNA is involved in stress-related diseases including major depressive disorder (MDD). Using low-coverage sequence data from 10,442 Chinese women to compute the normalized numbers of reads mapping to the mitochondrial genome as a proxy for the amount of mtDNA, we identified two loci that contribute to mtDNA levels: one within the TFAM gene on chromosome 10 (rs11006126, p value = 8.73 × 10(-28), variance explained = 1.90%) and one over the CDK6 gene on chromosome 7 (rs445, p value = 6.03 × 10(-16), variance explained = 0.50%). Both loci replicated in an independent cohort. CDK6 is thus a new molecule involved in the control of mtDNA. We identify increased rates of heteroplasmy in women with MDD, and show from an experimental paradigm using mice that the increase is likely due to stress. Furthermore, at least one heteroplasmic variant is significantly associated with changes in the amount of mtDNA (position 513, p value = 3.27 × 10(-9), variance explained = 0.48%) suggesting site-specific heteroplasmy as a possible link between stress and increase in amount of mtDNA. These findings indicate the involvement of mitochondrial genome copy number and sequence in an organism's response to stress.
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Affiliation(s)
- Na Cai
- Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, Oxfordshire OX3 7BN, UK
| | - Yihan Li
- Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, Oxfordshire OX3 7BN, UK
| | - Simon Chang
- Department and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan 33302, Taiwan
| | - Jieqin Liang
- BGI-Shenzhen, Floor 9 Complex Building, Beishan Industrial Zone, Yantian District, Shenzhen, Guangdong 518083, China
| | - Chongyun Lin
- BGI-Shenzhen, Floor 9 Complex Building, Beishan Industrial Zone, Yantian District, Shenzhen, Guangdong 518083, China
| | - Xiufei Zhang
- BGI-Shenzhen, Floor 9 Complex Building, Beishan Industrial Zone, Yantian District, Shenzhen, Guangdong 518083, China
| | - Lu Liang
- BGI-Shenzhen, Floor 9 Complex Building, Beishan Industrial Zone, Yantian District, Shenzhen, Guangdong 518083, China
| | - Jingchu Hu
- BGI-Shenzhen, Floor 9 Complex Building, Beishan Industrial Zone, Yantian District, Shenzhen, Guangdong 518083, China
| | - Wharton Chan
- Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, Oxfordshire OX3 7BN, UK
| | - Kenneth S Kendler
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Tomas Malinauskas
- Cold Spring Harbor Laboratory, Beckman Building, One Bungtown Road, Cold Spring Harbor, NY 11724, USA
| | - Guo-Jen Huang
- Department and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan 33302, Taiwan
| | - Qibin Li
- BGI-Shenzhen, Floor 9 Complex Building, Beishan Industrial Zone, Yantian District, Shenzhen, Guangdong 518083, China
| | - Richard Mott
- Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, Oxfordshire OX3 7BN, UK
| | - Jonathan Flint
- Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, Oxfordshire OX3 7BN, UK.
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42
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MTERF4 regulates the mitochondrial dysfunction induced by MPP+ in SH-SY5Y cells. Biochem Biophys Res Commun 2015; 464:214-20. [DOI: 10.1016/j.bbrc.2015.06.119] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 06/17/2015] [Indexed: 11/21/2022]
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43
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Moon HE, Paek SH. Mitochondrial Dysfunction in Parkinson's Disease. Exp Neurobiol 2015; 24:103-16. [PMID: 26113789 PMCID: PMC4479806 DOI: 10.5607/en.2015.24.2.103] [Citation(s) in RCA: 235] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 06/02/2015] [Accepted: 06/03/2015] [Indexed: 12/21/2022] Open
Abstract
Parkinson's disease (PD) is characterized by the selective loss of dopaminergic neurons of the substantia nigra pars compacta (SNc) with motor and nonmotor symptoms. Defective mitochondrial function and increased oxidative stress (OS) have been demonstrated as having an important role in PD pathogenesis, although the underlying mechanism is not clear. The etiopathogenesis of sporadic PD is complex with variable contributions of environmental factors and genetic susceptibility. Both these factors influence various mitochondrial aspects, including their life cycle, bioenergetic capacity, quality control, dynamic changes of morphology and connectivity (fusion, fission), subcellular distribution (transport), and the regulation of cell death pathways. Mitochondrial dysfunction has mainly been reported in various non-dopaminergic cells and tissue samples from human patients as well as transgenic mouse and fruit fly models of PD. Thus, the mitochondria represent a highly promising target for the development of PD biomarkers. However, the limited amount of dopaminergic neurons prevented investigation of their detailed study. For the first time, we established human telomerase reverse transcriptase (hTERT)-immortalized wild type, idiopathic and Parkin deficient mesenchymal stromal cells (MSCs) isolated from the adipose tissues of PD patients, which could be used as a good cellular model to evaluate mitochondrial dysfunction for the better understanding of PD pathology and for the development of early diagnostic markers and effective therapy targets of PD. In this review, we examine evidence for the roles of mitochondrial dysfunction and increased OS in the neuronal loss that leads to PD and discuss how this knowledge further improve the treatment for patients with PD.
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Affiliation(s)
- Hyo Eun Moon
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Cancer Research Institute, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul 110-744, Korea
| | - Sun Ha Paek
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Cancer Research Institute, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul 110-744, Korea
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44
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Braatz EM, Coleman RA. A mathematical model of insulin resistance in Parkinson’s disease. Comput Biol Chem 2015; 56:84-97. [DOI: 10.1016/j.compbiolchem.2015.04.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 04/06/2015] [Accepted: 04/06/2015] [Indexed: 01/04/2023]
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45
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Zhang G, Wan Y, Zhang Y, Lan S, Jia R, Wang Z, Fan Y, Wang F. Expression of Mitochondria-Associated Genes (PPARGC1A, NRF-1, BCL-2 and BAX) in Follicular Development and Atresia of Goat Ovaries. Reprod Domest Anim 2015; 50:465-73. [PMID: 25779891 DOI: 10.1111/rda.12514] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 02/23/2015] [Indexed: 12/31/2022]
Abstract
Most follicles undergo atresia during the developmental process. Follicular atresia is predominantly regulated by apoptosis of granulosa cells, but the mechanism underlying apoptosis via the mitochondria-dependent apoptotic pathway is unclear. We aimed to investigate whether the mitochondria-associated genes peroxisome proliferator-activated receptor-gamma, coactivator1-alpha (PPARGC1A), nuclear respiratory factor-1 (NRF-1), B-cell CLL/lymphoma 2 (BCL-2) and BCL2-associated X protein (BAX) played a role in follicular atresia through this pathway. The four mitochondria-associated proteins (PGC-1α, which are encoded by the PPARGC1A gene, NRF-1, BCL-2 and BAX) mainly expressed in granulosa cells. The mRNA and protein levels of PPARGC1A/PGC-1α and NRF-1 in granulosa cells increased with the follicular development. These results showed that these genes may play a role in the regulation of the follicular development. In addition, compared with healthy follicles, the granulosa cell in atretic follicles had a reduced expression of NRF-1, increased BAX expression and increased ratio of BAX to BCL-2 expression. These results suggested that changes of the mitochondria-associated gene expression patterns in granulosa cells may lead to follicular atresia during goat follicle development.
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Affiliation(s)
- G Zhang
- Jiangsu Livestock Embryo Engineering Laboratory, Nanjing Agricultural University, Nanjing, China
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46
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Lee D, Kim KY, Shim MS, Kim SY, Ellisman MH, Weinreb RN, Ju WK. Coenzyme Q10 ameliorates oxidative stress and prevents mitochondrial alteration in ischemic retinal injury. Apoptosis 2015; 19:603-14. [PMID: 24337820 PMCID: PMC3938850 DOI: 10.1007/s10495-013-0956-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Coenzyme Q10 (CoQ10) acts by scavenging reactive oxygen species for protecting neuronal cells against oxidative stress in neurodegenerative diseases. We tested whether a diet supplemented with CoQ10 ameliorates oxidative stress and mitochondrial alteration, as well as promotes retinal ganglion cell (RGC) survival in ischemic retina induced by intraocular pressure elevation. A CoQ10 significantly promoted RGC survival at 2 weeks after ischemia. Superoxide dismutase 2 (SOD2) and heme oxygenase-1 (HO-1) expression were significantly increased at 12 h after ischemic injury. In contrast, the CoQ10 significantly prevented the upregulation of SOD2 and HO-1 protein expression in ischemic retina. In addition, the CoQ10 significantly blocked activation of astroglial and microglial cells in ischemic retina. Interestingly, the CoQ10 blocked apoptosis by decreasing caspase-3 protein expression in ischemic retina. Bax and phosphorylated Bad (pBad) protein expression were significantly increased in ischemic retina at 12 h. Interestingly, while CoQ10 significantly decreased Bax protein expression in ischemic retina, CoQ10 showed greater increase of pBad protein expression. Of interest, ischemic injury significantly increased mitochondrial transcription factor A (Tfam) protein expression in the retina at 12 h, however, CoQ10 significantly preserved Tfam protein expression in ischemic retina. Interestingly, there were no differences in mitochondrial DNA content among control- or CoQ10-treated groups. Our findings demonstrate that CoQ10 protects RGCs against oxidative stress by modulating the Bax/Bad-mediated mitochondrial apoptotic pathway as well as prevents mitochondrial alteration by preserving Tfam protein expression in ischemic retina. Our results suggest that CoQ10 may provide neuroprotection against oxidative stress-mediated mitochondrial alterations in ischemic retinal injury.
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Affiliation(s)
- Dongwook Lee
- Laboratory for Optic Nerve Biology, Department of Ophthalmology, Hamilton Glaucoma Center, University of California San Diego, 9415 Campus Point Drive, La Jolla, CA 92037 USA
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonju, Chonbuk Republic of Korea
| | - Keun-Young Kim
- Department of Neuroscience, Center for Research on Biological Systems, National Center for Microscopy and Imaging Research, University of California San Diego, La Jolla, CA USA
| | - Myoung Sup Shim
- Laboratory for Optic Nerve Biology, Department of Ophthalmology, Hamilton Glaucoma Center, University of California San Diego, 9415 Campus Point Drive, La Jolla, CA 92037 USA
| | - Sang Yeop Kim
- Laboratory for Optic Nerve Biology, Department of Ophthalmology, Hamilton Glaucoma Center, University of California San Diego, 9415 Campus Point Drive, La Jolla, CA 92037 USA
| | - Mark H. Ellisman
- Department of Neuroscience, Center for Research on Biological Systems, National Center for Microscopy and Imaging Research, University of California San Diego, La Jolla, CA USA
| | - Robert N. Weinreb
- Laboratory for Optic Nerve Biology, Department of Ophthalmology, Hamilton Glaucoma Center, University of California San Diego, 9415 Campus Point Drive, La Jolla, CA 92037 USA
| | - Won-Kyu Ju
- Laboratory for Optic Nerve Biology, Department of Ophthalmology, Hamilton Glaucoma Center, University of California San Diego, 9415 Campus Point Drive, La Jolla, CA 92037 USA
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47
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Kim J, Piao Y, Pak YK, Chung D, Han YM, Hong JS, Jun EJ, Shim JY, Choi J, Kim CJ. Umbilical cord mesenchymal stromal cells affected by gestational diabetes mellitus display premature aging and mitochondrial dysfunction. Stem Cells Dev 2015; 24:575-86. [PMID: 25437179 DOI: 10.1089/scd.2014.0349] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Human umbilical cord mesenchymal stromal cells (hUC-MSCs) of Wharton's jelly origin undergo adipogenic, osteogenic, and chondrogenic differentiation in vitro. Recent studies have consistently shown their therapeutic potential in various human disease models. However, the biological effects of major pregnancy complications on the cellular properties of hUC-MSCs remain to be studied. In this study, we compared the basic properties of hUC-MSCs obtained from gestational diabetes mellitus (GDM) patients (GDM-UC-MSCs) and normal pregnant women (N-UC-MSCs). Assessments of cumulative cell growth, MSC marker expression, cellular senescence, and mitochondrial function-related gene expression were performed using a cell count assay, senescence-associated β-galactosidase staining, quantitative real-time reverse transcription-polymerase chain reaction, immunoblotting, and cell-based mitochondrial functional assay system. When compared with N-UC-MSCs, GDM-UC-MSCs showed decreased cell growth and earlier cellular senescence with accumulation of p16 and p53, even though they expressed similar levels of CD105, CD90, and CD73 MSC marker proteins. GDM-UC-MSCs also displayed significantly lower osteogenic and adipogenic differentiation potentials than N-UC-MSCs. Furthermore, GDM-UC-MSCs exhibited a low mitochondrial activity and significantly reduced expression of the mitochondrial function regulatory genes ND2, ND9, COX1, PGC-1α, and TFAM. Here, we report intriguing and novel evidence that maternal metabolic derangement during gestation affects the biological properties of fetal cells, which may be a component of fetal programming. Our findings also underscore the importance of the critical assessment of the biological impact of maternal-fetal conditions in biological studies and clinical applications of hUC-MSCs.
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Affiliation(s)
- Jooyeon Kim
- 1 Departments of Pathology, Asan Medical Center, University of Ulsan College of Medicine , Seoul, Korea
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SIRT3 Attenuates MPTP-Induced Nigrostriatal Degeneration Via Enhancing Mitochondrial Antioxidant Capacity. Neurochem Res 2015; 40:600-8. [DOI: 10.1007/s11064-014-1507-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 12/18/2014] [Accepted: 12/20/2014] [Indexed: 12/23/2022]
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Politano G, Benso A, Savino A, Di Carlo S. ReNE: a cytoscape plugin for regulatory network enhancement. PLoS One 2014; 9:e115585. [PMID: 25541727 PMCID: PMC4277354 DOI: 10.1371/journal.pone.0115585] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 12/01/2014] [Indexed: 11/19/2022] Open
Abstract
One of the biggest challenges in the study of biological regulatory mechanisms is the integration, americanmodeling, and analysis of the complex interactions which take place in biological networks. Despite post transcriptional regulatory elements (i.e., miRNAs) are widely investigated in current research, their usage and visualization in biological networks is very limited. Regulatory networks are commonly limited to gene entities. To integrate networks with post transcriptional regulatory data, researchers are therefore forced to manually resort to specific third party databases. In this context, we introduce ReNE, a Cytoscape 3.x plugin designed to automatically enrich a standard gene-based regulatory network with more detailed transcriptional, post transcriptional, and translational data, resulting in an enhanced network that more precisely models the actual biological regulatory mechanisms. ReNE can automatically import a network layout from the Reactome or KEGG repositories, or work with custom pathways described using a standard OWL/XML data format that the Cytoscape import procedure accepts. Moreover, ReNE allows researchers to merge multiple pathways coming from different sources. The merged network structure is normalized to guarantee a consistent and uniform description of the network nodes and edges and to enrich all integrated data with additional annotations retrieved from genome-wide databases like NCBI, thus producing a pathway fully manageable through the Cytoscape environment. The normalized network is then analyzed to include missing transcription factors, miRNAs, and proteins. The resulting enhanced network is still a fully functional Cytoscape network where each regulatory element (transcription factor, miRNA, gene, protein) and regulatory mechanism (up-regulation/down-regulation) is clearly visually identifiable, thus enabling a better visual understanding of its role and the effect in the network behavior. The enhanced network produced by ReNE is exportable in multiple formats for further analysis via third party applications. ReNE can be freely installed from the Cytoscape App Store (http://apps.cytoscape.org/apps/rene) and the full source code is freely available for download through a SVN repository accessible at http://www.sysbio.polito.it/tools_svn/BioInformatics/Rene/releases/. ReNE enhances a network by only integrating data from public repositories, without any inference or prediction. The reliability of the introduced interactions only depends on the reliability of the source data, which is out of control of ReNe developers.
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Affiliation(s)
- Gianfranco Politano
- Department of Control and Computer Engineering, Politecnico di Torino, Torino, Italy
| | - Alfredo Benso
- Department of Control and Computer Engineering, Politecnico di Torino, Torino, Italy
- Consorzio Interuniversitario Nazionale per l′Informatica, Verres (AO), Italy
| | - Alessandro Savino
- Department of Control and Computer Engineering, Politecnico di Torino, Torino, Italy
| | - Stefano Di Carlo
- Department of Control and Computer Engineering, Politecnico di Torino, Torino, Italy
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50
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Impaired mitochondrial homeostasis and neurodegeneration: towards new therapeutic targets? J Bioenerg Biomembr 2014; 47:89-99. [PMID: 25216534 PMCID: PMC4323516 DOI: 10.1007/s10863-014-9576-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 08/25/2014] [Indexed: 12/12/2022]
Abstract
The sustained integrity of the mitochondrial population of a cell is critical for maintained cell health, and disruption of that integrity is linked strongly to human disease, especially to the neurodegenerative diseases. These are appalling diseases causing untold levels of suffering for which treatment is woefully inadequate. Understanding the mechanisms that disturb mitochondrial homeostasis may therefore prove key to identification of potential new therapeutic pathways. Mechanisms causing mitochondrial dysfunction include the acute catastrophic loss of function caused by opening of the mitochondrial permeability transition pore (mPTP), which collapses bioenergetic function and initiates cell death. This is best characterised in ischaemic reperfusion injury, although it may also contribute to a number of other diseases. More insidious disturbances of mitochondrial homeostasis may result from impaired balance in the pathways that promote mitochondrial repair (biogenesis) and pathways that remove dysfunctional mitochondria (mitophagy). Impaired coordination between these processes is emerging as a key feature of a number of neurodegenerative and neuromuscular disorders. Here we review pathways that may prove to be valuable potential therapeutic targets, focussing on the molecular mechanisms that govern the coordination of these processes and their involvement in neurodegenerative diseases.
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