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Sun Q, Jin C. Cell signaling and epigenetic regulation of nicotine-induced carcinogenesis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 345:123426. [PMID: 38295934 PMCID: PMC10939829 DOI: 10.1016/j.envpol.2024.123426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 11/22/2023] [Accepted: 01/21/2024] [Indexed: 02/05/2024]
Abstract
Nicotine, a naturally occurring tobacco alkaloid responsible for tobacco addiction, has long been considered non-carcinogenic. However, emerging evidence suggests that nicotine may possess carcinogenic properties in mice and could be a potential carcinogen in humans. This review aims to summarize the potential molecular mechanisms underlying nicotine-induced carcinogenesis, with a specific focus on epigenetic regulation and the activation of nicotinic acetylcholine receptors (nAChRs) in addition to genotoxicity and excess reactive oxygen species (ROS). Additionally, we explore a novel hypothesis regarding nicotine's carcinogenicity involving the downregulation of stem-loop binding protein (SLBP), a critical regulator of canonical histone mRNA, and the polyadenylation of canonical histone mRNA. By shedding light on these mechanisms, this review underscores the need for further research to elucidate the carcinogenic potential of nicotine and its implications for human health.
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Affiliation(s)
- Qi Sun
- Department of Medicine, New York University Grossman School of Medicine, New York, NY, 10010, USA; Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang, Liaoning, 110013, China; Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention, Ministry of Education, China Medical University, Shenyang, Liaoning, 110122, China
| | - Chunyuan Jin
- Department of Medicine, New York University Grossman School of Medicine, New York, NY, 10010, USA; Perlmutter Cancer Center, NYU Langone Health, New York, NY, 10016, USA.
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2
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Bele T, Turk T, Križaj I. Nicotinic acetylcholine receptors in cancer: Limitations and prospects. Biochim Biophys Acta Mol Basis Dis 2024; 1870:166875. [PMID: 37673358 DOI: 10.1016/j.bbadis.2023.166875] [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: 05/22/2023] [Revised: 08/09/2023] [Accepted: 08/31/2023] [Indexed: 09/08/2023]
Abstract
Nicotinic acetylcholine receptors (nAChRs) have long been considered to solely mediate neurotransmission. However, their widespread distribution in the human body suggests a more diverse physiological role. Additionally, the expression of nAChRs is increased in certain cancers, such as lung cancer, and has been associated with cell proliferation, epithelial-to-mesenchymal cell transition, angiogenesis and apoptosis prevention. Several compounds that interact with these receptors have been identified as potential therapeutic agents. They have been tested as drugs for treating nicotine addiction, alcoholism, depression, pain and Alzheimer's disease. This review focuses on nAChR-mediated signalling in cancer, presenting opportunities for the development of innovative nAChR-based anticancer drugs. It displays the differences in expression of each nAChR subunit between normal and cancer cells for selected cancer types, highlighting their possible involvement in specific cases. Antagonists of nAChRs that could complement existing cancer therapies are summarised and critically discussed. We hope that this review will stimulate further research on the role of nAChRs in cancer potentially leading to innovative cancer therapies.
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Affiliation(s)
- T Bele
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia; Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000 Ljubljana, Slovenia.
| | - T Turk
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, SI-1000 Ljubljana, Slovenia.
| | - I Križaj
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
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3
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Santos EW, Khatoon S, Di Mise A, Zheng YM, Wang YX. Mitochondrial Dynamics in Pulmonary Hypertension. Biomedicines 2023; 12:53. [PMID: 38255160 PMCID: PMC10813473 DOI: 10.3390/biomedicines12010053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/12/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024] Open
Abstract
Mitochondria are essential organelles for energy production, calcium homeostasis, redox signaling, and other cellular responses involved in pulmonary vascular biology and disease processes. Mitochondrial homeostasis depends on a balance in mitochondrial fusion and fission (dynamics). Mitochondrial dynamics are regulated by a viable circadian clock. Hypoxia and nicotine exposure can cause dysfunctions in mitochondrial dynamics, increases in mitochondrial reactive oxygen species generation and calcium concentration, and decreases in ATP production. These mitochondrial changes contribute significantly to pulmonary vascular oxidative stress, inflammatory responses, contractile dysfunction, pathologic remodeling, and eventually pulmonary hypertension. In this review article, therefore, we primarily summarize recent advances in basic, translational, and clinical studies of circadian roles in mitochondrial metabolism in the pulmonary vasculature. This knowledge may not only be crucial to fully understanding the development of pulmonary hypertension, but also greatly help to create new therapeutic strategies for treating this devastating disease and other related pulmonary disorders.
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Affiliation(s)
- Ed Wilson Santos
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA; (E.W.S.); (S.K.); (A.D.M.)
| | - Subika Khatoon
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA; (E.W.S.); (S.K.); (A.D.M.)
| | - Annarita Di Mise
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA; (E.W.S.); (S.K.); (A.D.M.)
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Via Orabona, 4, 70125 Bari, Italy
| | - Yun-Min Zheng
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA; (E.W.S.); (S.K.); (A.D.M.)
| | - Yong-Xiao Wang
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA; (E.W.S.); (S.K.); (A.D.M.)
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4
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Kaplan A, Lakkis B, El-Samadi L, Karaayvaz EB, Booz GW, Zouein FA. Cooling Down Inflammation in the Cardiovascular System via the Nicotinic Acetylcholine Receptor. J Cardiovasc Pharmacol 2023; 82:241-265. [PMID: 37539950 DOI: 10.1097/fjc.0000000000001455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 07/06/2023] [Indexed: 08/05/2023]
Abstract
ABSTRACT Inflammation is a major player in many cardiovascular diseases including hypertension, atherosclerosis, myocardial infarction, and heart failure. In many individuals, these conditions coexist and mutually exacerbate each other's progression. The pathophysiology of these diseases entails the active involvement of both innate and adaptive immune cells. Immune cells that possess the α7 subunit of the nicotinic acetylcholine receptor on their surface have the potential to be targeted through both pharmacological and electrical stimulation of the cholinergic system. The cholinergic system regulates the inflammatory response to various stressors in different organ systems by systematically suppressing spleen-derived monocytes and chemokines and locally improving immune cell function. Research on the cardiovascular system has demonstrated the potential for atheroma plaque stabilization and regression as favorable outcomes. Smaller infarct size and reduced fibrosis have been associated with improved cardiac function and a decrease in adverse cardiac remodeling. Furthermore, enhanced electrical stability of the myocardium can lead to a reduction in the incidence of ventricular tachyarrhythmia. In addition, improving mitochondrial dysfunction and decreasing oxidative stress can result in less myocardial tissue damage caused by reperfusion injury. Restoring baroreflex activity and reduction in renal damage can promote blood pressure regulation and help counteract hypertension. Thus, the present review highlights the potential of nicotinic acetylcholine receptor activation as a natural approach to alleviate the adverse consequences of inflammation in the cardiovascular system.
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Affiliation(s)
- Abdullah Kaplan
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Riad El-Solh, Beirut, Lebanon
- Department of Cardiology, Kemer Public Hospital, Kemer, Antalya, Turkey
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, Beirut, Lebanon
| | - Bachir Lakkis
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Riad El-Solh, Beirut, Lebanon
| | - Lana El-Samadi
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Riad El-Solh, Beirut, Lebanon
| | - Ekrem Bilal Karaayvaz
- Department of Cardiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - George W Booz
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS; and
| | - Fouad A Zouein
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Riad El-Solh, Beirut, Lebanon
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, Beirut, Lebanon
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS; and
- Department of Signaling and Cardiovascular Pathophysiology, UMR-S 1180, Inserm, Université Paris-Saclay, France
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5
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Shakeri M, Kong B, Zhuang H, Bowker B. Potential Role of Ribonucleotide Reductase Enzyme in Mitochondria Function and Woody Breast Condition in Broiler Chickens. Animals (Basel) 2023; 13:2038. [PMID: 37370548 DOI: 10.3390/ani13122038] [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: 06/07/2023] [Revised: 06/16/2023] [Accepted: 06/18/2023] [Indexed: 06/29/2023] Open
Abstract
The cellular events leading to the development of the woody breast myopathy in broiler breast muscle are unclear. Affected woody breast muscle exhibits muscle fiber degeneration/regeneration, connective tissue accumulation, and adverse morphological changes in mitochondria. Ribonucleotide reductase (RNR) is an enzyme for the synthesis of dNTP, which is important for mitochondria DNA content (mtDNA). RNR consists of two subunits: RRM1/RRM2. A decrease in RRM2 is associated with a decrease in mtDNA and mitochondria proteins, leading to impaired ATP production. The objective of this study was to investigate potential RNR differences between woody breast (WB) and normal (N) breast muscle by examining RRM2 expression and associated pathways. Gene expression and enzyme activities were examined by qPCR and commercial kits. Results showed that RRM2 expression reduced for WB (p = 0.01) and genes related to mitochondria, including ATP6 (p = 0.03), COX1 (p = 0.001), CYTB (p = 0.07), ND2 (p = 0.001) and ND4L (p = 0.03). Furthermore, NDUFB7 and COX 14, which are related to mitochondria and ATP synthesis, tended to be reduced in WB. Compared to N, GLUT1 reduced for WB (p = 0.05), which is responsible for glucose transport in cells. Consequently, PDK4 (p = 0.0001) and PPARG (p = 0.008) increased in WB, suggesting increased fatty acid oxidation. Citric synthase activity and the NAD/NADH ratio (p = 0.02) both reduced for WB, while WB increased CHRND expression (p = 0.001), which is a possible indicator of high reactive oxygen species levels. In conclusion, a reduction in RRM2 impaired mitochondria function, potentially ATP synthesis in WB, by increasing fibrosis and the down-regulation of several genes related to mitochondria function.
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Affiliation(s)
- Majid Shakeri
- U.S. National Poultry Research Center, USDA-ARS, Athens, GA 30605, USA
| | - Byungwhi Kong
- U.S. National Poultry Research Center, USDA-ARS, Athens, GA 30605, USA
| | - Hong Zhuang
- U.S. National Poultry Research Center, USDA-ARS, Athens, GA 30605, USA
| | - Brian Bowker
- U.S. National Poultry Research Center, USDA-ARS, Athens, GA 30605, USA
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Abstract
The analogy of mitochondria as powerhouses has expired. Mitochondria are living, dynamic, maternally inherited, energy-transforming, biosynthetic, and signaling organelles that actively transduce biological information. We argue that mitochondria are the processor of the cell, and together with the nucleus and other organelles they constitute the mitochondrial information processing system (MIPS). In a three-step process, mitochondria (1) sense and respond to both endogenous and environmental inputs through morphological and functional remodeling; (2) integrate information through dynamic, network-based physical interactions and diffusion mechanisms; and (3) produce output signals that tune the functions of other organelles and systemically regulate physiology. This input-to-output transformation allows mitochondria to transduce metabolic, biochemical, neuroendocrine, and other local or systemic signals that enhance organismal adaptation. An explicit focus on mitochondrial signal transduction emphasizes the role of communication in mitochondrial biology. This framework also opens new avenues to understand how mitochondria mediate inter-organ processes underlying human health.
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Affiliation(s)
- Martin Picard
- Department of Psychiatry, Division of Behavioral Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA; Department of Neurology, H. Houston Merritt Center, Columbia Translational Neuroscience Initiative, Columbia University Irving Medical Center, New York, NY 10032, USA; New York State Psychiatric Institute, New York, NY 10032, USA.
| | - Orian S Shirihai
- Department of Medicine, Endocrinology, and Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Metabolism Theme, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
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7
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Giannoulis SV, Chenoweth MJ, Saquilayan P, Tyndale RF, Lerman C, Kennedy JL, Zawertailo L, Gonçalves V. Examining the role of mitochondrial genetic variation in nicotine dependence. Psychiatry Res 2022; 310:114452. [PMID: 35227992 DOI: 10.1016/j.psychres.2022.114452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 01/31/2022] [Accepted: 02/15/2022] [Indexed: 10/19/2022]
Abstract
Nicotine dependence (ND) has a heritability rate of ∼50%, suggesting genetic factors contribute to underlying mechanisms. Here, we aimed to examine variants within both mtDNA and the nuclear genome to determine if mitochondrial genes are associated with ND. A total of 129 mtDNA SNPs and 1136 nuclear-encoded mitochondrial genes in a sample of N = 374 Caucasians were selected for analysis. Age of onset of first, occasional, and daily smoking and Fagerström Test for Nicotine Dependence were used as outcomes for the analysis. Linear regression was used to test common variants. Gene analyses were performed using MAGMA. One nuclear mitochondrial SNP, rs78417112 found in the HSD17B4 gene, was significantly associated with the age of onset of occasional smoking. Additionally, one nuclear mitochondrial gene, PRKACA, was significantly associated with age of onset of both first and occasional smoking. Replication testing of the mtDNA m.1700T>C SNP, nominally associated with age of onset of daily smoking, was available in the PNAT2 clinical trial (N = 930 Caucasians). A meta-analysis showed this SNP was associated with age of onset of daily smoking (p-value = 0.004). Overall, the findings suggest mitochondrial genetic variation may contribute to variability in smoking phenotypes, although replication in larger samples is required.
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Affiliation(s)
- Stavroula V Giannoulis
- Molecular Brain Sciences Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, CAMH, 250 College Street, M5T 1R8, Toronto, ON, Canada; Institute of Medical Science, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Meghan J Chenoweth
- Molecular Brain Sciences Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, CAMH, 250 College Street, M5T 1R8, Toronto, ON, Canada; Department of Pharmacology and Toxicology, University of Toronto, ON, Canada
| | - Paulo Saquilayan
- Molecular Brain Sciences Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, CAMH, 250 College Street, M5T 1R8, Toronto, ON, Canada; Institute of Medical Science, Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Nicotine Dependence Clinic, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Rachel F Tyndale
- Molecular Brain Sciences Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, CAMH, 250 College Street, M5T 1R8, Toronto, ON, Canada; Department of Pharmacology and Toxicology, University of Toronto, ON, Canada; Division of Addictions, Centre for Addiction and Mental Health, Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Caryn Lerman
- Department of Psychiatry and USC Norris Comprehensive Cancer Center, University of Southern California, 1441 Eastlake Avenue, Cancer Center, Los Angeles, CA 90089, United States
| | - James L Kennedy
- Molecular Brain Sciences Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, CAMH, 250 College Street, M5T 1R8, Toronto, ON, Canada; Institute of Medical Science, Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Laurie Zawertailo
- Molecular Brain Sciences Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, CAMH, 250 College Street, M5T 1R8, Toronto, ON, Canada; Department of Pharmacology and Toxicology, University of Toronto, ON, Canada; Nicotine Dependence Clinic, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Vanessa Gonçalves
- Molecular Brain Sciences Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, CAMH, 250 College Street, M5T 1R8, Toronto, ON, Canada; Institute of Medical Science, Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Department of Pharmacology and Toxicology, University of Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
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8
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Wang J, Zhu S, Lu W, Li A, Zhou Y, Chen Y, Chen M, Qian C, Hu X, Zhang Y, Huang C. Varenicline improved laparotomy-induced cognitive impairment by restoring mitophagy in aged mice. Eur J Pharmacol 2022; 916:174524. [PMID: 34582844 DOI: 10.1016/j.ejphar.2021.174524] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 09/16/2021] [Accepted: 09/22/2021] [Indexed: 01/06/2023]
Abstract
Growing incidence of postoperative cognitive dysfunction (POCD) in the elderly populations after major surgery challenges us to provide stable and effective treatments. Mitochondria dysfunction is essential in the pathogenesis of aging and neurodegenerative diseases. It is hypothesized that varenicline improves cognitive impairment through restoring mitophagy and tau phosphorylation. Wild type C57BL/6 mice (male, 18-month-old) were subjected to laparotomy with or without chronic varenicline administration. Postoperative cognition and anxiety were determined by Morris water maze and elevated plus maze tests. Meanwhile, oxidative stress, mitochondria function, mitophagy and tau phosphorylation, as well as the correlation of PKR and STAT3 were characterized. In aged mice following laparotomy, persistent cognitive dysfunction in spatial learning and memory were indicated by longer escape latency and less crossing frequency in the target quadrant. Laparotomy also induced anxiety responses deficits. After postoperative 14 days, significant ROS accumulation and smaller mitochondria with impaired function were presented in the hippocampus. Simultaneously, there were abundant of neuronal apoptosis and translocation of tau phosphorylation in the mitochondria. Enhanced mitophagy and down regulated ChAT activity were distributed in the mice subjected to laparotomy. PKR signaling was activated and required for subcellular activation of STAT3 in the brain. After chronic varenicline administration (1 mg/kg/day), cognitive dysfunction, hippocampal oxidative stress, as well as fragile mitophagy were improved. Our results highlight that laparotomy caused cognitive impairment with persistent oxidative stress, mitochondria dysfunction and autophagy dysregulation. PKR/STAT3 maybe the potential mechanism, and perioperative varenicline treatment could be an efficient therapeutic strategy for POCD.
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Affiliation(s)
- Jianan Wang
- Department of Anesthesiology, The Second Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province, China; Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei City, Anhui Province, China; Scientific Research and Experiment Center of the Second Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province, China
| | - Shoufeng Zhu
- Department of Anesthesiology, The Second Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province, China; Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei City, Anhui Province, China; Scientific Research and Experiment Center of the Second Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province, China
| | - Wenping Lu
- Department of Anesthesiology, The Second Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province, China; Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei City, Anhui Province, China; Scientific Research and Experiment Center of the Second Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province, China
| | - Ao Li
- The Second Clinical Medical College of Anhui Medical University, Hefei City, Anhui Province, China
| | - Yuqi Zhou
- The Second Clinical Medical College of Anhui Medical University, Hefei City, Anhui Province, China
| | - Yihuan Chen
- The Second Clinical Medical College of Anhui Medical University, Hefei City, Anhui Province, China
| | - Ming Chen
- The Second Clinical Medical College of Anhui Medical University, Hefei City, Anhui Province, China
| | - Cheng Qian
- Center for Scientific Research of Anhui Medical University, Hefei City, Anhui Province, China
| | - Xianwen Hu
- Department of Anesthesiology, The Second Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province, China; Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei City, Anhui Province, China; Scientific Research and Experiment Center of the Second Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province, China
| | - Ye Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province, China; Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei City, Anhui Province, China; Scientific Research and Experiment Center of the Second Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province, China
| | - Chunxia Huang
- Department of Anesthesiology, The Second Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province, China; Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei City, Anhui Province, China; Scientific Research and Experiment Center of the Second Affiliated Hospital of Anhui Medical University, Hefei City, Anhui Province, China.
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9
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Ivanušec A, Šribar J, Križaj I. Secreted Phospholipases A 2 - not just Enzymes: Revisited. Int J Biol Sci 2022; 18:873-888. [PMID: 35002531 PMCID: PMC8741859 DOI: 10.7150/ijbs.68093] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 12/02/2021] [Indexed: 12/18/2022] Open
Abstract
Secreted phospholipases A2 (sPLA2s) participate in a very broad spectrum of biological processes through their enzymatic activity and as ligands for membrane and soluble receptors. The physiological roles of sPLA2s as enzymes have been very well described, while their functions as ligands are still poorly known. Since the last overview of sPLA2-binding proteins (sPLA2-BPs) 10 years ago, several important discoveries have occurred in this area. New and more sensitive analytical tools have enabled the discovery of additional sPLA2-BPs, which are presented and critically discussed here. The structural diversity of sPLA2-BPs reveals sPLA2s as very promiscuous proteins, and we offer some structural explanations for this nature that makes these proteins evolutionarily highly advantageous. Three areas of physiological engagement of sPLA2-BPs have appeared most clearly: cellular transport and signalling, and regulation of the enzymatic activity of sPLA2s. Due to the multifunctionality of sPLA2s, they appear to be exceptional pharmacological targets. We reveal the potential to exploit interactions of sPLA2s with other proteins in medical terms, for the development of original diagnostic and therapeutic procedures. We conclude this survey by suggesting the priority questions that need to be answered.
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Affiliation(s)
- Adrijan Ivanušec
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.,Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000 Ljubljana, Slovenia
| | - Jernej Šribar
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Igor Križaj
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
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10
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Skok M. Universal nature of cholinergic regulation demonstrated with nicotinic acetylcholine receptors. BBA ADVANCES 2022; 2:100061. [PMID: 37082580 PMCID: PMC10074969 DOI: 10.1016/j.bbadva.2022.100061] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 10/30/2022] [Indexed: 11/17/2022] Open
Abstract
Mammalian nicotinic acetylcholine receptors (nAChRs) were initially discovered as ligand-gated ion channels mediating fast synaptic transmission in the neuro-muscular junctions and autonomic ganglia. They were further found to be involved in a wide range of basic biological processes within the brain and in non-excitable tissues. The present review summarizes the data obtained in our laboratory during last two decades. Investigation of autonomic ganglia with the nAChR subunit-specific antibodies was followed by identification of nAChRs in B lymphocytes, discovery of mitochondrial nAChRs and their role in mitochondrial apoptosis pathway, and revealing the role of α7 nAChRs and α7-specific antibodies in neuroinflammation-related Alzheimer disease and COVID-19. The data obtained demonstrate the involvement of nAChRs in cell survival, proliferation, cell-to-cell communication and inflammatory reaction. Together with the ability of nAChRs to function in both ionotropic and metabotropic way, these data illustrate the universal nature of cholinergic regulation mediated by nAChRs.
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11
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Skok M. Mitochondrial nicotinic acetylcholine receptors: Mechanisms of functioning and biological significance. Int J Biochem Cell Biol 2021; 143:106138. [PMID: 34929396 DOI: 10.1016/j.biocel.2021.106138] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 12/09/2021] [Accepted: 12/15/2021] [Indexed: 10/19/2022]
Abstract
Nicotinic acetylcholine receptors mediate fast synaptic transmission in neuro-muscular junctions and autonomic ganglia and modulate survival, proliferation and neurotransmitter or cytokine release in the brain and non-excitable cells. The neuronal-type nicotinic acetylcholine receptors are expressed in the outer mitochondria membrane to regulate the release of pro-apoptotic substances like cytochrome c or reactive oxygen species. In the intracellular environment, nicotinic acetylcholine receptor signaling is ion-independent and triggers intramitochondrial kinases, similar to those activated by plasma membrane nicotinic acetylcholine receptors. The present review will describe the data obtained during the last five years including, in particular, post-translational glycosylation as a targeting signal to mitochondria, mechanisms of mitochondrial nicotinic acetylcholine receptor signaling studied with subtype-specific agonists, antagonists, positive allosteric modulators and knockout mice lacking certain nicotinic acetylcholine receptor subunits, interaction of mitochondrial nicotinic acetylcholine receptors with Bcl-2 family proteins and their involvement in important pathologies like neuroinflammation, liver damage and SARS-CoV-2 infection.
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Affiliation(s)
- Maryna Skok
- Palladin Institute of Biochemistry, 9, Leontovycha str., 01054 Kyiv, Ukraine.
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12
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Muramatsu I, Uwada J, Chihara K, Sada K, Wang MH, Yazawa T, Taniguchi T, Ishibashi T, Masuoka T. Evaluation of radiolabeled acetylcholine synthesis and release in rat striatum. J Neurochem 2021; 160:342-355. [PMID: 34878648 DOI: 10.1111/jnc.15556] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 10/18/2021] [Accepted: 11/30/2021] [Indexed: 12/26/2022]
Abstract
Cholinergic transmission underlies higher brain functions such as cognition and movement. To elucidate the process whereby acetylcholine (ACh) release is maintained and regulated in the central nervous system, uptake of [3 H]choline and subsequent synthesis and release of [3 H]ACh were investigated in rat striatal segments. Incubation with [3 H]choline elicited efficient uptake via high-affinity choline transporter-1, resulting in accumulation of [3 H]choline and [3 H]ACh. However, following inhibition of ACh esterase (AChE), incubation with [3 H]choline led predominantly to the accumulation of [3 H]ACh. Electrical stimulation and KCl depolarization selectively released [3 H]ACh but not [3 H]choline. [3 H]ACh release gradually declined upon repetitive stimulation, whereas the release was reproducible under inhibition of AChE. [3 H]ACh release was abolished after treatment with vesamicol, an inhibitor of vesicular ACh transporter. These results suggest that releasable ACh is continually replenished from the cytosol to releasable pools of cholinergic vesicles to maintain cholinergic transmission. [3 H]ACh release evoked by electrical stimulation was abolished by tetrodotoxin, but that induced by KCl was largely resistant. ACh release was Ca2+ dependent and exhibited slightly different sensitivities to N- and P-type Ca2+ channel toxins (ω-conotoxin GVIA and ω-agatoxin IVA, respectively) between both stimuli. [3 H]ACh release was negatively regulated by M2 muscarinic and D2 dopaminergic receptors. The present results suggest that inhibition of AChE within cholinergic neurons and of presynaptic negative regulation of ACh release contributes to maintenance and facilitation of cholinergic transmission, providing a potentially useful clue for the development of therapies for cholinergic dysfunction-associated disorders, in addition to inhibition of synaptic cleft AChE.
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Affiliation(s)
- Ikunobu Muramatsu
- Department of Pharmacology, School of Medicine, Kanazawa Medical University, Uchinada, Ishikawa, Japan.,Division of Genomic Science and Microbiology, School of Medicine, University of Fukui, Eiheiji, Fukui, Japan.,Kimura Hospital, Awara, Fukui, Japan
| | - Junsuke Uwada
- Department of Pharmacology, School of Medicine, Kanazawa Medical University, Uchinada, Ishikawa, Japan.,Division of Cellular Signal Transduction, Department of Biochemistry, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
| | - Kazuyasu Chihara
- Division of Genomic Science and Microbiology, School of Medicine, University of Fukui, Eiheiji, Fukui, Japan
| | - Kiyonao Sada
- Division of Genomic Science and Microbiology, School of Medicine, University of Fukui, Eiheiji, Fukui, Japan
| | - Mao-Hsien Wang
- Division of Genomic Science and Microbiology, School of Medicine, University of Fukui, Eiheiji, Fukui, Japan.,Department of Anesthesia, En Chu Kon Hospital, New Taipei City, Taiwan, ROC
| | - Takashi Yazawa
- Division of Cellular Signal Transduction, Department of Biochemistry, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
| | - Takanobu Taniguchi
- Division of Cellular Signal Transduction, Department of Biochemistry, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
| | - Takaharu Ishibashi
- Department of Pharmacology, School of Medicine, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Takayoshi Masuoka
- Department of Pharmacology, School of Medicine, Kanazawa Medical University, Uchinada, Ishikawa, Japan
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13
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Hollenhorst MI, Krasteva-Christ G. Nicotinic Acetylcholine Receptors in the Respiratory Tract. Molecules 2021; 26:6097. [PMID: 34684676 PMCID: PMC8539672 DOI: 10.3390/molecules26206097] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/01/2021] [Accepted: 10/06/2021] [Indexed: 02/07/2023] Open
Abstract
Nicotinic acetylcholine receptors (nAChR) are widely distributed in neuronal and non-neuronal tissues, where they play diverse physiological roles. In this review, we highlight the recent findings regarding the role of nAChR in the respiratory tract with a special focus on the involvement of nAChR in the regulation of multiple processes in health and disease. We discuss the role of nAChR in mucociliary clearance, inflammation, and infection and in airway diseases such as asthma, chronic obstructive pulmonary disease, and cancer. The subtype diversity of nAChR enables differential regulation, making them a suitable pharmaceutical target in many diseases. The stimulation of the α3β4 nAChR could be beneficial in diseases accompanied by impaired mucociliary clearance, and the anti-inflammatory effect due to an α7 nAChR stimulation could alleviate symptoms in diseases with chronic inflammation such as chronic obstructive pulmonary disease and asthma, while the inhibition of the α5 nAChR could potentially be applied in non-small cell lung cancer treatment. However, while clinical studies targeting nAChR in the airways are still lacking, we suggest that more detailed research into this topic and possible pharmaceutical applications could represent a valuable tool to alleviate the symptoms of diverse airway diseases.
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14
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Iarkov A, Mendoza C, Echeverria V. Cholinergic Receptor Modulation as a Target for Preventing Dementia in Parkinson's Disease. Front Neurosci 2021; 15:665820. [PMID: 34616271 PMCID: PMC8488354 DOI: 10.3389/fnins.2021.665820] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 08/26/2021] [Indexed: 12/20/2022] Open
Abstract
Parkinson’s disease (PD) is a neurodegenerative condition characterized by the loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc) in the midbrain resulting in progressive impairment in cognitive and motor abilities. The physiological and molecular mechanisms triggering dopaminergic neuronal loss are not entirely defined. PD occurrence is associated with various genetic and environmental factors causing inflammation and mitochondrial dysfunction in the brain, leading to oxidative stress, proteinopathy, and reduced viability of dopaminergic neurons. Oxidative stress affects the conformation and function of ions, proteins, and lipids, provoking mitochondrial DNA (mtDNA) mutation and dysfunction. The disruption of protein homeostasis induces the aggregation of alpha-synuclein (α-SYN) and parkin and a deficit in proteasome degradation. Also, oxidative stress affects dopamine release by activating ATP-sensitive potassium channels. The cholinergic system is essential in modulating the striatal cells regulating cognitive and motor functions. Several muscarinic acetylcholine receptors (mAChR) and nicotinic acetylcholine receptors (nAChRs) are expressed in the striatum. The nAChRs signaling reduces neuroinflammation and facilitates neuronal survival, neurotransmitter release, and synaptic plasticity. Since there is a deficit in the nAChRs in PD, inhibiting nAChRs loss in the striatum may help prevent dopaminergic neurons loss in the striatum and its pathological consequences. The nAChRs can also stimulate other brain cells supporting cognitive and motor functions. This review discusses the cholinergic system as a therapeutic target of cotinine to prevent cognitive symptoms and transition to dementia in PD.
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Affiliation(s)
- Alexandre Iarkov
- Laboratorio de Neurobiología, Facultad de Ciencias de la Salud, Universidad San Sebastián, Concepción, Chile
| | - Cristhian Mendoza
- Laboratorio de Neurobiología, Facultad de Ciencias de la Salud, Universidad San Sebastián, Concepción, Chile
| | - Valentina Echeverria
- Laboratorio de Neurobiología, Facultad de Ciencias de la Salud, Universidad San Sebastián, Concepción, Chile.,Research & Development Service, Bay Pines VA Healthcare System, Bay Pines, FL, United States
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15
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Seyedaghamiri F, Mahmoudi J, Hosseini L, Sadigh-Eteghad S, Farhoudi M. Possible Engagement of Nicotinic Acetylcholine Receptors in Pathophysiology of Brain Ischemia-Induced Cognitive Impairment. J Mol Neurosci 2021; 72:642-652. [PMID: 34596872 DOI: 10.1007/s12031-021-01917-4] [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: 06/30/2021] [Accepted: 09/12/2021] [Indexed: 10/20/2022]
Abstract
Post-stroke disabilities like cognitive impairment impose are complex conditions with great economic burdens on health care systems. For these comorbidities, no effective therapies have been identified yet. Nicotinic acetylcholine receptors (nAChRs) are multifunctional receptors participating in various behavioral and neurobiological functions. During brain ischemia, the increased glutamate accumulation leads to neuronal excitotoxicity as well as mitochondrial dysfunction. These abnormalities then cause the increased levels of oxidants, which play key roles in neuronal death and apoptosis in the infarct zone. Additionally, recall of cytokines and inflammatory factors play a prominent role in the exacerbation of ischemic injury. As well, neurotrophic factors' insufficiency results in synaptic dysfunction and cognitive impairments in ischemic brain. Of note, nAChRs through various signaling pathways can participate in therapeutic approaches such as cholinergic system's stimulation, and reduction of excitotoxicity, inflammation, apoptosis, oxidative stress, mitochondrial dysfunction, and autophagy. Moreover, the possible roles of nAChRs in neurogenesis, synaptogenesis, and stimulation of neurotrophic factors expression have been reported previously. On the other hand, the majority of the above-mentioned mechanisms were found to be common in both brain ischemia pathogenesis and cognitive function tuning. Therefore, it seems that nAChRs might be known as key regulators in the control of ischemia pathology, and their modulation could be considered as a new avenue in the multi-target treatment of post-stroke cognitive impairment.
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Affiliation(s)
| | - Javad Mahmoudi
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Leila Hosseini
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeed Sadigh-Eteghad
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Mehdi Farhoudi
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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16
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Patalas-Krawczyk P, Malinska D, Walczak J, Kratzer G, Prill M, Michalska B, Drabik K, Titz B, Eb-Levadoux Y, Schneider T, Szymanski J, Hoeng J, Peitsch MC, Duszynski J, Szczepanowska J, Van der Toorn M, Mathis C, Wieckowski MR. Effects of plant alkaloids on mitochondrial bioenergetic parameters. Food Chem Toxicol 2021; 154:112316. [PMID: 34089800 DOI: 10.1016/j.fct.2021.112316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 05/26/2021] [Accepted: 05/29/2021] [Indexed: 10/21/2022]
Abstract
Mitochondria are among the first responders to various stress factors that challenge cell and tissue homeostasis. Various plant alkaloids have been investigated for their capacity to modulate mitochondrial activities. In this study, we used isolated mitochondria from mouse brain and liver tissues to assess nicotine, anatabine and anabasine, three alkaloids found in tobacco plant, for potential modulatory activity on mitochondrial bioenergetics parameters. All alkaloids decreased basal oxygen consumption of mouse brain mitochondria in a dose-dependent manner without any effect on the ADP-stimulated respiration. None of the alkaloids, at 1 nM or 1.25 μM concentrations, influenced the maximal rate of swelling of brain mitochondria. In contrast to brain mitochondria, 1.25 μM anatabine, anabasine and nicotine increased maximal rate of swelling of liver mitochondria suggesting a toxic effect. Only at 1 mM concentration, anatabine slowed down the maximal rate of Ca2+-induced swelling and increased the time needed to reach the maximal rate of swelling. The observed mitochondrial bioenergetic effects are probably mediated through a pathway independent of nicotinic acetylcholine receptors, as quantitative proteomic analysis could not confirm their expression in pure mitochondrial fractions isolated from mouse brain tissue.
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Affiliation(s)
| | - Dominika Malinska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
| | - Jaroslaw Walczak
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
| | - Gilles Kratzer
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland.
| | - Monika Prill
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
| | - Bernadeta Michalska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
| | - Karolina Drabik
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
| | - Bjorn Titz
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland.
| | - Yvan Eb-Levadoux
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland.
| | | | - Jedrzej Szymanski
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland.
| | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland.
| | - Jerzy Duszynski
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
| | - Joanna Szczepanowska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
| | - Marco Van der Toorn
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland.
| | - Carole Mathis
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000, Neuchâtel, Switzerland.
| | - Mariusz R Wieckowski
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
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17
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Luijerink LLM, Vivekanandarajah A, Waters KA, Machaalani R. The α7 and β2 nicotinic acetylcholine receptor subunits regulate apoptosis in the infant hippocampus, and in sudden infant death syndrome (SIDS). Apoptosis 2021; 25:574-589. [PMID: 32577853 DOI: 10.1007/s10495-020-01618-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Apoptosis is increased in the hippocampus of infants who died of sudden infant death syndrome (SIDS), yet it is not known via which mechanism this has occurred. Following existing support for a role of the α7 and β2 nicotinic acetylcholine receptor (nAChR) subunits in apoptotic regulation, we aimed to determine whether these subunits are altered in the SIDS hippocampus and if they are correlated with cell death markers of active caspase-3 (Casp-3) and TUNEL. Further analyses were run according to the presence of major SIDS risk factors related to hypoxia (bed-sharing and prone sleeping), infection (presence of an upper respiratory tract infection (URTI)), cigarette smoke exposure and gender. Immunohistochemical expression of the markers was studied in 4 regions of the hippocampus (Cornu Ammonis (CA)1, CA2, CA3, CA4) and subiculum amongst 52 infants (aged 1-7 months) who died suddenly and unexpectedly (SUDI) and for whom the cause of death was explained (eSUDI; n = 9), or not and characterised as SIDS I (n = 8) and SIDS II (n = 35) according to the San Diego diagnostic criteria. Results showed that SIDS II infants had widespread increases in TUNEL compared with eSUDI and SIDS I infants, as well as increased α7 and Casp-3 in CA2 compared to eSUDI infants, although these changes were predominant amongst infants who did not bed-share. Cigarette smoke exposure had minimal effects on the markers, while an URTI was associated with changes in all markers (after accounting for bed-sharing). Our findings support the role of nAChRs in regulating apoptosis in the SIDS hippocampus, and highlight the need for separate analysis according to risk factors.
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Affiliation(s)
- L L M Luijerink
- Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Medical Foundation Building K25, Sydney, NSW, 2006, Australia
| | - A Vivekanandarajah
- Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Medical Foundation Building K25, Sydney, NSW, 2006, Australia
| | - K A Waters
- Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Medical Foundation Building K25, Sydney, NSW, 2006, Australia.,The Children's Hospital at Westmead, Westmead, NSW, 2146, Australia
| | - R Machaalani
- Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Medical Foundation Building K25, Sydney, NSW, 2006, Australia. .,The Children's Hospital at Westmead, Westmead, NSW, 2146, Australia.
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18
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Nourse JB, Harshefi G, Marom A, Karmi A, Cohen Ben-Ami H, Caldwell KA, Caldwell GA, Treinin M. Conserved nicotine-activated neuroprotective pathways involve mitochondrial stress. iScience 2021; 24:102140. [PMID: 33665559 PMCID: PMC7900352 DOI: 10.1016/j.isci.2021.102140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 01/03/2021] [Accepted: 01/29/2021] [Indexed: 12/14/2022] Open
Abstract
Tobacco smoking is a risk factor for several human diseases. Conversely, smoking also reduces the prevalence of Parkinson's disease, whose hallmark is degeneration of substantia nigra dopaminergic neurons (DNs). We use C. elegans as a model to investigate whether tobacco-derived nicotine activates nicotinic acetylcholine receptors (nAChRs) to selectively protect DNs. Using this model, we demonstrate conserved functions of DN-expressed nAChRs. We find that DOP-2, a D3-receptor homolog; MCU-1, a mitochondrial calcium uniporter; PINK-1 (PTEN-induced kinase 1); and PDR-1 (Parkin) are required for nicotine-mediated protection of DNs. Together, our results support involvement of a calcium-modulated, mitochondrial stress-activated PINK1/Parkin-dependent pathway in nicotine-induced neuroprotection. This suggests that nicotine-selective protection of substantia nigra DNs is due to the confluence of two factors: first, their unique vulnerability to mitochondrial stress, which is mitigated by increased mitochondrial quality control due to PINK1 activation, and second, their specific expression of D3-receptors.
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Affiliation(s)
- J Brucker Nourse
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, 35487 AL, USA
| | - Gilad Harshefi
- Department of Medical Neurobiology, Hebrew University - Hadassah Medical School, Jerusalem 91120, Israel
| | - Adi Marom
- Department of Medical Neurobiology, Hebrew University - Hadassah Medical School, Jerusalem 91120, Israel
| | - Abdelrahaman Karmi
- Department of Medical Neurobiology, Hebrew University - Hadassah Medical School, Jerusalem 91120, Israel
| | - Hagit Cohen Ben-Ami
- Department of Medical Neurobiology, Hebrew University - Hadassah Medical School, Jerusalem 91120, Israel
| | - Kim A Caldwell
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, 35487 AL, USA.,Departments of Neurology and Neurobiology, Center for Neurodegeneration and Experimental Therapeutics, Nathan Shock Center of Excellence in the Basic Biology of Aging, University of Alabama at Birmingham School of Medicine, Birmingham, 35294 AL, USA
| | - Guy A Caldwell
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, 35487 AL, USA.,Departments of Neurology and Neurobiology, Center for Neurodegeneration and Experimental Therapeutics, Nathan Shock Center of Excellence in the Basic Biology of Aging, University of Alabama at Birmingham School of Medicine, Birmingham, 35294 AL, USA
| | - Millet Treinin
- Department of Medical Neurobiology, Hebrew University - Hadassah Medical School, Jerusalem 91120, Israel
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19
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Kalashnyk O, Lykhmus O, Uspenska K, Izmailov M, Komisarenko S, Skok M. Mitochondrial α7 nicotinic acetylcholine receptors are displaced from complexes with VDAC1 to form complexes with Bax upon apoptosis induction. Int J Biochem Cell Biol 2020; 129:105879. [PMID: 33147521 DOI: 10.1016/j.biocel.2020.105879] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/16/2020] [Accepted: 10/12/2020] [Indexed: 02/06/2023]
Abstract
Nicotinic acetylcholine receptors (nAChRs) mediate fast synaptic transmission in muscles and autonomic ganglia and regulate cytokine and neurotransmitter release in the brain and non-excitable cells. The α7 nAChRs localized in the outer membrane of mitochondria regulate cytochrome c release stimulated by apoptosis-inducing agents. However, the mechanisms through which nAChRs influence mitochondrial permeability remain obscure. Here we put an aim to explore the interaction of nAChRs with voltage-dependent anion channels (VDAC1) and pro-apoptotic protein Bax in the course of apoptosis induction. By using molecular modeling in silico, it was shown that both Bax and VDAC1 can bind within the 4th transmembrane portion (M4) of nAChR subunits. Experimentally, α7 nAChR-Bax and α7 nAChR-VDAC1 complexes were identified by sandwich ELISA in mitochondria isolated from astrocytoma U373 cells. Stimulating apoptosis of U373 cells by H2O2 disrupted α7-VDAC complexes and favored formation of α7-Bax complexes accompanied by cytochrome c release from mitochondria. α7-selective agonist PNU282987 or type 2 positive allosteric modulator PNU120596 disrupted α7-Bax and returned α7 nAChR to complex with VDAC1 resulting in attenuation of cytochrome c release. It is concluded that mitochondrial nAChRs regulate apoptosis-induced mitochondrial channel formation by modulating the interplay of apoptosis-related proteins in mitochondria outer membrane.
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Affiliation(s)
- Olena Kalashnyk
- Department of Molecular Immunology, Palladin Institute of Biochemistry NAS of Ukraine, 9, Leontovycha str., 01054 Kyiv, Ukraine
| | - Olena Lykhmus
- Department of Molecular Immunology, Palladin Institute of Biochemistry NAS of Ukraine, 9, Leontovycha str., 01054 Kyiv, Ukraine
| | - Kateryna Uspenska
- Department of Molecular Immunology, Palladin Institute of Biochemistry NAS of Ukraine, 9, Leontovycha str., 01054 Kyiv, Ukraine
| | - Mykhailo Izmailov
- Department of Molecular Immunology, Palladin Institute of Biochemistry NAS of Ukraine, 9, Leontovycha str., 01054 Kyiv, Ukraine
| | - Sergiy Komisarenko
- Department of Molecular Immunology, Palladin Institute of Biochemistry NAS of Ukraine, 9, Leontovycha str., 01054 Kyiv, Ukraine
| | - Maryna Skok
- Department of Molecular Immunology, Palladin Institute of Biochemistry NAS of Ukraine, 9, Leontovycha str., 01054 Kyiv, Ukraine.
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20
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Trikash I, Kasatkina L, Lykhmus O, Skok M. Nicotinic acetylcholine receptors regulate clustering, fusion and acidification of the rat brain synaptic vesicles. Neurochem Int 2020; 138:104779. [PMID: 32474177 PMCID: PMC7256623 DOI: 10.1016/j.neuint.2020.104779] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/20/2020] [Accepted: 05/25/2020] [Indexed: 11/15/2022]
Abstract
The brain nicotinic acetylcholine receptors (nAChRs) expressed in pre-synaptic nerve terminals regulate neurotransmitter release. However, there is no evidence for the expression of nAChRs in synaptic vesicles, which deliver neurotransmitter to synaptic cleft. The aim of this paper was to investigate the presence of nAChRs in synaptic vesicles purified from the rat brain and to study their possible involvement in vesicles life cycle. According to dynamic light scattering analysis, the antibody against extracellular domain (1-208) of α7 nAChR subunit inhibited synaptic vesicles clustering. Sandwich ELISA with nAChR subunit-specific antibodies demonstrated the presence of α4β2, α7 and α7β2nAChR subtypes in synaptic vesicles and showed that α7 and β2 nAChR subunits are co-localized with synaptic vesicle glycoprotein 2A (SV2A). Pre-incubation with either α7-selective agonist PNU282987 or nicotine did not affect synaptic vesicles clustering but delayed their Ca2+-dependent fusion with the plasma membranes. In contrast, nicotine but not PNU282987 stimulated acidification of isolated synaptic vesicles, indicating that α4β2 but not α7-containing nAChRs are involved in regulation of proton influx and neurotransmitter refilling. Treatment of rats with levetiracetam, a specific modulator of SV2A, increased the content of α7 nAChRs in synaptic vesicles accompanied by increased clustering but decreased Ca2+-dependent fusion. These data for the first time demonstrate the presence of nAChRs in synaptic vesicles and suggest an active involvement of cholinergic regulation in neurotransmitter release. Synaptic vesicles may be an additional target of nicotine inhaled upon smoking and of α7-specific drugs widely discussed as anti-inflammatory and pro-cognitive tools.
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Affiliation(s)
- Irene Trikash
- Palladin Institute of Biochemistry, NAS of Ukraine, Kyiv, Ukraine
| | | | - Olena Lykhmus
- Palladin Institute of Biochemistry, NAS of Ukraine, Kyiv, Ukraine
| | - Maryna Skok
- Palladin Institute of Biochemistry, NAS of Ukraine, Kyiv, Ukraine.
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21
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Ashraf-Uz-Zaman M, Bhalerao A, Mikelis CM, Cucullo L, German NA. Assessing the Current State of Lung Cancer Chemoprevention: A Comprehensive Overview. Cancers (Basel) 2020; 12:E1265. [PMID: 32429547 PMCID: PMC7281533 DOI: 10.3390/cancers12051265] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/06/2020] [Accepted: 05/14/2020] [Indexed: 12/14/2022] Open
Abstract
Chemoprevention of lung cancer is thought to significantly reduce the risk of acquiring these conditions in the subpopulation of patients with underlying health issues, such as chronic obstructive pulmonary disorder and smoking-associated lung problems. Many strategies have been tested in the previous decades, with very few translating to successful clinical trials in specific subpopulations of patients. In this review, we analyze these strategies, as well as new approaches that have emerged throughout the last few years, including synthetic lethality concept and microbiome-induced regulation of lung carcinogenesis. Overall, the continuous effort in the area of lung chemoprevention is required to develop practical therapeutical approaches. Given the inconsistency of results obtained in clinical trials targeting lung cancer chemoprevention in various subgroups of patients that differ in the underlying health condition, race, and gender, we believe that individualized approaches will have more promise than generalized treatments.
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Affiliation(s)
- Md Ashraf-Uz-Zaman
- Department of Pharmaceutical Sciences, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA; (M.A.-U.-Z.); (A.B.); (C.M.M.); (L.C.)
| | - Aditya Bhalerao
- Department of Pharmaceutical Sciences, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA; (M.A.-U.-Z.); (A.B.); (C.M.M.); (L.C.)
| | - Constantinos M. Mikelis
- Department of Pharmaceutical Sciences, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA; (M.A.-U.-Z.); (A.B.); (C.M.M.); (L.C.)
- Center for Blood-Brain Barrier Research, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA
| | - Luca Cucullo
- Department of Pharmaceutical Sciences, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA; (M.A.-U.-Z.); (A.B.); (C.M.M.); (L.C.)
- Center for Blood-Brain Barrier Research, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA
| | - Nadezhda A. German
- Department of Pharmaceutical Sciences, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA; (M.A.-U.-Z.); (A.B.); (C.M.M.); (L.C.)
- Center for Blood-Brain Barrier Research, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA
- Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
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22
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Kumar R, Kumar A, Nordberg A, Långström B, Darreh-Shori T. Proton pump inhibitors act with unprecedented potencies as inhibitors of the acetylcholine biosynthesizing enzyme-A plausible missing link for their association with incidence of dementia. Alzheimers Dement 2020; 16:1031-1042. [PMID: 32383816 DOI: 10.1002/alz.12113] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 03/12/2020] [Accepted: 04/08/2020] [Indexed: 01/22/2023]
Abstract
INTRODUCTION Several pharmacoepidemiological studies indicate that proton pump inhibitors (PPIs) significantly increase the risk of dementia. Yet, the underlying mechanism is not known. Here, we report the discovery of an unprecedented mode of action of PPIs that explains how PPIs may increase the risk of dementia. METHODS Advanced in silico docking analyses and detailed enzymological assessments were performed on PPIs against the core-cholinergic enzyme, choline-acetyltransferase (ChAT), responsible for biosynthesis of acetylcholine (ACh). RESULTS This report shows compelling evidence that PPIs act as inhibitors of ChAT, with high selectivity and unprecedented potencies that lie far below their in vivo plasma and brain concentrations. DISCUSSION Given that accumulating evidence points at cholinergic dysfunction as a driving force of major dementia disorders, our findings mechanistically explain how prolonged use of PPIs may increase incidence of dementia. This call for restrictions for prolonged use of PPIs in elderly, and in patients with dementia or amyotrophic lateral sclerosis.
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Affiliation(s)
- Rajnish Kumar
- Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Amit Kumar
- Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Agneta Nordberg
- Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Bengt Långström
- Department of Chemistry, Uppsala University, Uppsala, Sweden
| | - Taher Darreh-Shori
- Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
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23
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Wessler I, Kirkpatrick CJ. Cholinergic signaling controls immune functions and promotes homeostasis. Int Immunopharmacol 2020; 83:106345. [PMID: 32203906 DOI: 10.1016/j.intimp.2020.106345] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/06/2020] [Accepted: 02/23/2020] [Indexed: 12/15/2022]
Abstract
Acetylcholine (ACh) was created by nature as one of the first signaling molecules, expressed already in procaryotes. Based on the positively charged nitrogen, ACh could initially mediate signaling in the absence of receptors. When evolution established more and more complex organisms the new emerging organs systems, like the smooth and skeletal muscle systems, energy-generating systems, sexual reproductive system, immune system and the nervous system have further optimized the cholinergic signaling machinery. Thus, it is not surprising that ACh and the cholinergic system are expressed in the vast majority of cells. Consequently, multiple common interfaces exist, for example, between the nervous and the immune system. Research of the last 20 years has unmasked these multiple regulating mechanisms mediated by cholinergic signaling and thus, the biological role of ACh has been revised. The present article summarizes new findings and describes the role of both non-neuronal and neuronal ACh in protecting the organism from external and internal health threats, in providing energy for the whole organism and for the individual cell, controling immune functions to prevent inflammatory dysbalance, and finally, the involvement in critical brain functions, such as learning and memory. All these capacities of ACh enable the organism to attain and maintain homeostasis under changing external conditions. However, the existence of identical interfaces between all these different organ systems complicates the research for new therapeutic interventions, making it essential that every effort should be undertaken to find out more specific targets to modulate cholinergic signaling in different diseases.
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Affiliation(s)
- Ignaz Wessler
- Institute of Pathology, University Medical Center, Johannes Gutenberg University, D-55101 Mainz, Germany.
| | - Charles James Kirkpatrick
- Institute of Pathology, University Medical Center, Johannes Gutenberg University, D-55101 Mainz, Germany
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24
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Grando SA, Rigas M, Chernyavsky A. Rationale for including intravenous immunoglobulin in the multidrug protocol of curative treatment of pemphigus vulgaris and development of an assay predicting disease relapse. Int Immunopharmacol 2020; 82:106385. [PMID: 32172211 DOI: 10.1016/j.intimp.2020.106385] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 03/04/2020] [Accepted: 03/05/2020] [Indexed: 11/29/2022]
Abstract
Analysis of reported outcomes of treatment of pemphigus vulgaris (PV) patients demonstrated that the multidrug approach offers a lower relapse rate compared to the FDA-approved prednisone/rituximab regimen. The multidrug protocol protects keratinocytes from autoantibody attack by systemic corticosteroids and mitochondrion-protecting drugs, selectively eliminates pathogenic autoantibodies by intravenous immunoglobulin (IVIg) and inhibits autoantibody production by cytotoxic immunosuppressors. Therefore, IVIg should be always added to the prednisone/rituximab regimen that does not eliminate circulating autoantibodies. To decrease risk for relapse to a minimum, PV should be maintained in full clinical remission until the critical mass of autoreactive plasma cells dies off. The two major factors that determine patient's risk for a relapse are the composition of the pool of pathogenic autoantibodies and the innate abilities of keratinocytes to sustain an autoantibody attack. As it is currently impossible to evaluate the risk for a relapse, development of a biomarker assay that could do so would be helpful in a long-term management of PV patients. We compared the magnitude of cytochrome c (CytC) release in keratinocytes by serum from PV patients in acute disease stage vs. remission and identified very strong positive correlation with disease severity. PV patients whose serum contained autoantibodies requiring higher amounts of normal IgG to neutralize their ability to release CytC were found to be at a higher risk for disease relapse. However, lack of very strong statistical correlation suggested that CytC is not an ideal biomarker to predict disease relapse, which should prompt a search for alternative candidates.
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Affiliation(s)
- Sergei A Grando
- Department of Dermatology, University of California Irvine, CA, USA.
| | | | - Alex Chernyavsky
- Department of Dermatology, University of California Irvine, CA, USA
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25
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Tarasenko O, Voytenko S, Koval L, Lykhmus O, Kalashnyk O, Skok M. Unusual properties of α7 nicotinic acetylcholine receptor ion channels in B lymphocyte-derived SP-2/0 cells. Int Immunopharmacol 2020; 82:106373. [PMID: 32163855 DOI: 10.1016/j.intimp.2020.106373] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/25/2020] [Accepted: 03/02/2020] [Indexed: 12/30/2022]
Abstract
This study demonstrates the presence of α7 nicotinic acetylcholine receptors (nAChR) in B lymphocyte-derived SP-2/0 cells by means of flow cytometry and immunocytochemistry. According to lectin and sandwich ELISA, the α7 subunits expressed in SP-2/0 cells are more glycosylated compared to those expressed in the brain or normal B lymphocytes and are combined with β2 subunits. At zero and negative pipette potentials, either acetylcholine or α7-specific agonist PNU282987 stimulated the ion channel activity in SP-2/0 cells revealed by single channel patch-clamp recordings. The conductivity was within the range of 19 to 39 pS and reversal potential was between -17 mV and +28 mV, the currents were potentiated by α7-specific positive allosteric modulator PNU120596 and were partially blocked by α7-specific antagonist methyllicaconitine (MLA). However, they were oriented downwards suggesting that the channels mediated the cation outflux rather than influx. As shown by Ca2+ imaging studies, PNU282987 did not stimulate immediate Ca2+ influx into SP-2/0 cells. Instead, Ca2+ influx through Ca-release-activated channels (CRACs) was observed within minutes after either PNU282987 or MLA application. It is concluded that SP-2/0 express α7β2 nAChRs, which mediate the cation outflux under negative pipette potentials applied, possibly, due to depolarized membrane or negative surface charge formed by carbohydrate residues. In addition, α7β2 nAChRs may influence CRACs in ion-independent way.
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Affiliation(s)
| | - Sergiy Voytenko
- Bogomoletz Institute of Physiology, 4, Bogomoletz Str, 01024 Kyiv, Ukraine
| | - Lyudmyla Koval
- Palladin Institute of Biochemistry, 9, Leontovycha Str., 01030 Kyiv, Ukraine.
| | - Olena Lykhmus
- Palladin Institute of Biochemistry, 9, Leontovycha Str., 01030 Kyiv, Ukraine
| | - Olena Kalashnyk
- Palladin Institute of Biochemistry, 9, Leontovycha Str., 01030 Kyiv, Ukraine
| | - Maryna Skok
- Palladin Institute of Biochemistry, 9, Leontovycha Str., 01030 Kyiv, Ukraine.
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26
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Sarlak S, Lalou C, Amoedo ND, Rossignol R. Metabolic reprogramming by tobacco-specific nitrosamines (TSNAs) in cancer. Semin Cell Dev Biol 2020; 98:154-166. [PMID: 31699542 DOI: 10.1016/j.semcdb.2019.09.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 08/25/2019] [Accepted: 09/02/2019] [Indexed: 12/21/2022]
Abstract
Metabolic reprogramming is a hallmark of cancer and the link between oncogenes activation, tumor supressors inactivation and bioenergetics modulation is well established. However, numerous carcinogenic environmental factors are responsible for early cancer initiation and their impact on metabolic reprogramming just starts to be deciphered. For instance, it was recently shown that UVB irradiation triggers metabolic reprogramming at the pre-cancer stage with implication for skin cancer detection and therapy. These observations foster the need to study the early changes in tissue metabolism following exposure to other carcinogenic events. According to the International Agency for Research on Cancer (IARC), tobacco smoke is a major class I-carcinogenic environmental factor that contains different carcinogens, but little is known on the impact of tobacco smoke on tissue metabolism and its participation to cancer initiation. In particular, tobacco-specific nitrosamines (TSNAs) play a central role in tobacco-smoke mediated cancer initiation. Here we describe the recent advances that have led to a new hypothesis regarding the link between nitrosamines signaling and metabolic reprogramming in cancer.
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Affiliation(s)
- Saharnaz Sarlak
- INSERM U1211, 33000 Bordeaux, France; Bordeaux University, 146 rue Léo Saignat, 33000 Bordeaux, France
| | - Claude Lalou
- INSERM U1211, 33000 Bordeaux, France; Bordeaux University, 146 rue Léo Saignat, 33000 Bordeaux, France
| | - Nivea Dias Amoedo
- CELLOMET, Functional Genomics Center (CGFB), 146 rue Léo Saignat, 33000 Bordeaux, France
| | - Rodrigue Rossignol
- INSERM U1211, 33000 Bordeaux, France; Bordeaux University, 146 rue Léo Saignat, 33000 Bordeaux, France; CELLOMET, Functional Genomics Center (CGFB), 146 rue Léo Saignat, 33000 Bordeaux, France.
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27
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Cheng WL, Chen KY, Lee KY, Feng PH, Wu SM. Nicotinic-nAChR signaling mediates drug resistance in lung cancer. J Cancer 2020; 11:1125-1140. [PMID: 31956359 PMCID: PMC6959074 DOI: 10.7150/jca.36359] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 10/26/2019] [Indexed: 02/07/2023] Open
Abstract
Lung cancer is the leading cause of cancer death worldwide. Cigarette smoking is the most common risk factor for lung carcinoma; other risks include genetic factors and exposure to radon gas, asbestos, secondhand smoke, and air pollution. Nicotine, the primary addictive constituent of cigarettes, contributes to cancer progression through activation of nicotinic acetylcholine receptors (nAChRs), which are membrane ligand-gated ion channels. Activation of nicotine/nAChR signaling is associated with lung cancer risk and drug resistance. We focused on nAChR pathways activated by nicotine and its downstream signaling involved in regulating apoptotic factors of mitochondria and drug resistance in lung cancer. Increasing evidence suggests that several sirtuins play a critical role in multiple aspects of cancer drug resistance. Thus, understanding the consequences of crosstalk between nicotine/nAChRs and sirtuin signaling pathways in the regulation of drug resistance could be a critical implication for cancer therapy.
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Affiliation(s)
- Wan-Li Cheng
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Kuan-Yuan Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.,Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
| | - Kang-Yun Lee
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.,Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.,Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Po-Hao Feng
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.,Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Sheng-Ming Wu
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.,Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
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28
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Morris G, Berk M, Maes M, Carvalho AF, Puri BK. Socioeconomic Deprivation, Adverse Childhood Experiences and Medical Disorders in Adulthood: Mechanisms and Associations. Mol Neurobiol 2019; 56:5866-5890. [PMID: 30685844 PMCID: PMC6614134 DOI: 10.1007/s12035-019-1498-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 01/15/2019] [Indexed: 12/30/2022]
Abstract
Severe socioeconomic deprivation (SED) and adverse childhood experiences (ACE) are significantly associated with the development in adulthood of (i) enhanced inflammatory status and/or hypothalamic-pituitary-adrenal (HPA) axis dysfunction and (ii) neurological, neuroprogressive, inflammatory and autoimmune diseases. The mechanisms by which these associations take place are detailed. The two sets of consequences are themselves strongly associated, with the first set likely contributing to the second. Mechanisms enabling bidirectional communication between the immune system and the brain are described, including complex signalling pathways facilitated by factors at the level of immune cells. Also detailed are mechanisms underpinning the association between SED, ACE and the genesis of peripheral inflammation, including epigenetic changes to immune system-related gene expression. The duration and magnitude of inflammatory responses can be influenced by genetic factors, including single nucleotide polymorphisms, and by epigenetic factors, whereby pro-inflammatory cytokines, reactive oxygen species, reactive nitrogen species and nuclear factor-κB affect gene DNA methylation and histone acetylation and also induce several microRNAs including miR-155, miR-181b-1 and miR-146a. Adult HPA axis activity is regulated by (i) genetic factors, such as glucocorticoid receptor polymorphisms; (ii) epigenetic factors affecting glucocorticoid receptor function or expression, including the methylation status of alternative promoter regions of NR3C1 and the methylation of FKBP5 and HSD11β2; (iii) chronic inflammation and chronic nitrosative and oxidative stress. Finally, it is shown how severe psychological stress adversely affects mitochondrial structure and functioning and is associated with changes in brain mitochondrial DNA copy number and transcription; mitochondria can act as couriers of childhood stress into adulthood.
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Affiliation(s)
- Gerwyn Morris
- IMPACT Strategic Research Centre, School of Medicine, Deakin University, Barwon Health, P.O. Box 291, Geelong, Victoria, Australia
| | - Michael Berk
- IMPACT Strategic Research Centre, School of Medicine, Deakin University, Barwon Health, P.O. Box 291, Geelong, Victoria, Australia
- Department of Psychiatry, Level 1 North, Main Block, Royal Melbourne Hospital, University of Melbourne, Parkville, Victoria, Australia
- Florey Institute for Neuroscience and Mental Health, University of Melbourne, Kenneth Myer Building, 30 Royal Parade, Parkville, Victoria, Australia
- Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Rd, Parkville, Victoria, Australia
| | - Michael Maes
- IMPACT Strategic Research Centre, School of Medicine, Deakin University, Barwon Health, P.O. Box 291, Geelong, Victoria, Australia
- Department of Psychiatry, Chulalongkorn University, Bangkok, Thailand
| | - André F Carvalho
- Department of Psychiatry, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Centre for Addiction & Mental Health (CAMH), Toronto, ON, Canada
| | - Basant K Puri
- Department of Medicine, Hammersmith Hospital, Imperial College London, London, UK.
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29
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Malińska D, Więckowski MR, Michalska B, Drabik K, Prill M, Patalas-Krawczyk P, Walczak J, Szymański J, Mathis C, Van der Toorn M, Luettich K, Hoeng J, Peitsch MC, Duszyński J, Szczepanowska J. Mitochondria as a possible target for nicotine action. J Bioenerg Biomembr 2019; 51:259-276. [PMID: 31197632 PMCID: PMC6679833 DOI: 10.1007/s10863-019-09800-z] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 05/19/2019] [Indexed: 12/26/2022]
Abstract
Mitochondria are multifunctional and dynamic organelles deeply integrated into cellular physiology and metabolism. Disturbances in mitochondrial function are involved in several disorders such as neurodegeneration, cardiovascular diseases, metabolic diseases, and also in the aging process. Nicotine is a natural alkaloid present in the tobacco plant which has been well studied as a constituent of cigarette smoke. It has also been reported to influence mitochondrial function both in vitro and in vivo. This review presents a comprehensive overview of the present knowledge of nicotine action on mitochondrial function. Observed effects of nicotine exposure on the mitochondrial respiratory chain, oxidative stress, calcium homeostasis, mitochondrial dynamics, biogenesis, and mitophagy are discussed, considering the context of the experimental design. The potential action of nicotine on cellular adaptation and cell survival is also examined through its interaction with mitochondria. Although a large number of studies have demonstrated the impact of nicotine on various mitochondrial activities, elucidating its mechanism of action requires further investigation.
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Affiliation(s)
- Dominika Malińska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093, Warsaw, Poland
| | - Mariusz R Więckowski
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093, Warsaw, Poland
| | - Bernadeta Michalska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093, Warsaw, Poland
| | - Karolina Drabik
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093, Warsaw, Poland
| | - Monika Prill
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093, Warsaw, Poland
| | - Paulina Patalas-Krawczyk
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093, Warsaw, Poland
| | - Jarosław Walczak
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093, Warsaw, Poland
| | - Jędrzej Szymański
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093, Warsaw, Poland
| | - Carole Mathis
- PMI R&D, Philip Morris Products S.A. (part of Philip Morris International group of companies), Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Marco Van der Toorn
- PMI R&D, Philip Morris Products S.A. (part of Philip Morris International group of companies), Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Karsta Luettich
- PMI R&D, Philip Morris Products S.A. (part of Philip Morris International group of companies), Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A. (part of Philip Morris International group of companies), Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A. (part of Philip Morris International group of companies), Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Jerzy Duszyński
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093, Warsaw, Poland.
| | - Joanna Szczepanowska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093, Warsaw, Poland.
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30
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Huang TH, Lin YW, Huang CP, Chen JM, Hsieh CL. Short-term auricular electrical stimulation rapidly elevated cortical blood flow and promoted the expression of nicotinic acetylcholine receptor α4 in the 2 vessel occlusion rats model. J Biomed Sci 2019; 26:36. [PMID: 31078140 PMCID: PMC6511660 DOI: 10.1186/s12929-019-0526-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 04/23/2019] [Indexed: 01/14/2023] Open
Abstract
Background Vascular dementia is the second dementing illness after Alzheimer’s disease and caused by reduced blood flow to the brain, and affects cognitive abilities. Our previous study found that auricular electrical stimulation (ES) improved motor and learning impairment, and this phenomenon related with nicotinic acetylcholine receptor (nAChR) expressed cells. However, the underlying mechanism was not clear. In the present study, we investigated the effects of auricular ES on cortical blood flow (CBF) and acetylcholine (ACh) - nAChRs expressed cells. Methods Vascular dementia rat animal model was established by permanent occlusions of common carotid arteries with 6–0 nylon suture filament. At 21 day after surgery, motor impairment was confirmed by rotarod test. 15-Hz auricular ES were applied to the ears for 20 min and CBF was recorded at the mean time. The brains were immediately dissected for immunohistochemical stain and western blot analysis. Results Our results showed that 15-Hz auricular ES rapidly elevated CBF in the middle cerebral artery. The numbers of nAChR α4 immuno-positive cells and western blot levels were significally increased by 15-Hz auricular ES in the hippocampal CA2 output cortex. The numbers of choline acetyltransferase (ChAT) – a key enzyme for biosynthesis of ACh – immuno-positive cells and western blot levels had no significant differences. Conclusions The present data suggested that the 15-Hz auricular ES for 20 min rapidly elevated cortical blood flow, promoted the expression of nAChR α4, and would be beneficial for the treatment of Alzheimer type and vascular type dementia.
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Affiliation(s)
- Tai-Hsiang Huang
- Graduate Institute of Acupuncture Science, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan
| | - Yi-Wen Lin
- Graduate Institute of Acupuncture Science, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan.,Chinese Medicine Research Center, China Medical University, Taichung, 40402, Taiwan
| | - Chun-Ping Huang
- Chinese Medicine Research Center, China Medical University, Taichung, 40402, Taiwan
| | - Jing-Ming Chen
- Graduate Institute of Applied Science and Engineering, Fu Jen Catholic University, New Taipei City, 510, Taiwan
| | - Ching-Liang Hsieh
- Chinese Medicine Research Center, China Medical University, Taichung, 40402, Taiwan. .,Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, 91 Hsueh-Shih Road, Taichung, 40402, Taiwan. .,Department of Chinese Medicine, China Medical University Hospital, Taichung, 40447, Taiwan. .,Research Center for Chinese Medicine and Acupuncture, China Medical Univeristy, Taichung, 40402, Taiwan.
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31
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Lykhmus O, Koval L, Voytenko L, Uspenska K, Komisarenko S, Deryabina O, Shuvalova N, Kordium V, Ustymenko A, Kyryk V, Skok M. Intravenously Injected Mesenchymal Stem Cells Penetrate the Brain and Treat Inflammation-Induced Brain Damage and Memory Impairment in Mice. Front Pharmacol 2019; 10:355. [PMID: 31057400 PMCID: PMC6479176 DOI: 10.3389/fphar.2019.00355] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 03/21/2019] [Indexed: 12/11/2022] Open
Abstract
Neuroinflammation is regarded as one of the pathogenic factors of Alzheimer disease (AD). Previously, we showed that mice regularly injected with bacterial lipopolysaccharide (LPS) possessed the AD-like symptoms like episodic memory decline, elevated amounts of amyloid beta (Aβ) peptide (1-42), and decreased levels of nicotinic acetylcholine receptors (nAChRs) in the brain. The use of mesenchymal stem cells (MSCs), which can differentiate into multiple cell types, including neurons, is an attractive idea of regenerative medicine, in particular, for neurodegenerative disorders like AD. In the present study, we aimed to investigate whether pathogenic effect of LPS on the brain and behavior of mice can be prevented or treated by injection of MSCs or MSC-produced soluble factors. Fluorescently-labeled MSCs, injected intravenously, were found in the brain blood vessels of LPS-treated mice. Mice co-injected with LPS and MSCs did not demonstrate episodic memory impairment, Aβ (1-42) accumulation, and nAChR decrease in the brain and brain mitochondria. Their mitochondria released less cytochrome c under the effect of Ca2+ compared to mitochondria of LPS-only-treated mice. Moreover, MSCs could reverse the pathogenic symptoms developed 3 weeks after LPS injection. Cultured MSCs produced IL-6 in response to LPS and MSCs effect in vivo was accompanied by additional stimulation of both micro- and macroglia. Xenogeneic (human) MSCs were almost as efficient as allogeneic (mouse) ones and regular injections of human MSC-conditioned medium also produced positive effect. These data allow suggesting MSCs as a potential therapeutic tool to cure neuroinflammation-related cognitive pathology.
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Affiliation(s)
- Olena Lykhmus
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry NAS, Kyiv, Ukraine
| | - Lyudmyla Koval
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry NAS, Kyiv, Ukraine
| | - Larysa Voytenko
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry NAS, Kyiv, Ukraine
| | - Kateryna Uspenska
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry NAS, Kyiv, Ukraine
| | - Serhiy Komisarenko
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry NAS, Kyiv, Ukraine
| | - Olena Deryabina
- Department of Gene Technologies, State Institute of Genetic and Regenerative Medicine NAMS, Kyiv, Ukraine
| | - Nadia Shuvalova
- Department of Gene Technologies, State Institute of Genetic and Regenerative Medicine NAMS, Kyiv, Ukraine
| | - Vitalii Kordium
- Department of Gene Technologies, State Institute of Genetic and Regenerative Medicine NAMS, Kyiv, Ukraine.,Department of Cell Regulatory Mechanisms, Institute of Molecular Biology and Genetics NAS, Kyiv, Ukraine
| | - Alina Ustymenko
- Department of Gene Technologies, State Institute of Genetic and Regenerative Medicine NAMS, Kyiv, Ukraine
| | - Vitalii Kyryk
- Department of Gene Technologies, State Institute of Genetic and Regenerative Medicine NAMS, Kyiv, Ukraine
| | - Maryna Skok
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry NAS, Kyiv, Ukraine
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Mocayar Marón FJ, Ferder L, Saraví FD, Manucha W. Hypertension linked to allostatic load: from psychosocial stress to inflammation and mitochondrial dysfunction. Stress 2019; 22:169-181. [PMID: 30547701 DOI: 10.1080/10253890.2018.1542683] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
Although a large number of available treatments and strategies, the prevalence of cardiovascular diseases continues to grow worldwide. Emerging evidence supports the notion of counteracting stress as a critical component of a comprehensive therapeutic strategy for cardiovascular disease. Indeed, an unhealthy lifestyle is a burden to biological variables such as plasma glucose, lipid profile, and blood pressure control. Recent findings identify allostatic load as a new paradigm for an integrated understanding of the importance of psychosocial stress and its impact on the development and maintenance of cardiovascular disease. Allostasis complement homeostasis and integrates behavioral and physiological mechanisms by which genes, early experiences, environment, lifestyle, diet, sleep, and physical exercise can modulate and adapt biological responses at the cellular level. For example, variability is a physiological characteristic of blood pressure necessary for survival and the allostatic load in hypertension can contribute to its related cardiovascular morbidity and mortality. Therefore, the current review will focus on the mechanisms that link hypertension to allostatic load, which includes psychosocial stress, inflammation, and mitochondrial dysfunction. We will describe and discuss new insights on neuroendocrine-immune effects linked to allostatic load and its impact on the cellular and molecular responses; the links between allostatic load, inflammation, and endothelial dysfunction; the epidemiological evidence supporting the pathophysiological origins of hypertension; and the biological embedding of allostatic load and hypertension with an emphasis on mitochondrial dysfunction.
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Affiliation(s)
- Feres José Mocayar Marón
- a Área de Química Biológica, Departamento de Morfofisiología, Facultad de Ciencias Médicas , Universidad Nacional de Cuyo , Mendoza , Argentina
| | - León Ferder
- b Department of Pediatrics , Nephrology Division, Miller School of Medicine, University of Miami , FL , USA
| | - Fernando Daniel Saraví
- c Instituto de Fisiología, Departamento de Morfofisiología, Facultad de Ciencias Médicas , Universidad Nacional de Cuyo , Mendoza , Argentina
| | - Walter Manucha
- d Área de Farmacología, Departamento de Patología, Facultad de Ciencias Médicas , Universidad Nacional de Cuyo , Mendoza , Argentina
- e Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) , Mendoza , Argentina
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33
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Increased Active OMI/HTRA2 Serine Protease Displays a Positive Correlation with Cholinergic Alterations in the Alzheimer's Disease Brain. Mol Neurobiol 2018; 56:4601-4619. [PMID: 30361890 PMCID: PMC6657433 DOI: 10.1007/s12035-018-1383-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 10/05/2018] [Indexed: 12/11/2022]
Abstract
OMI/HTRA2 (high-temperature requirement serine protease A2) is a mitochondrial serine protease involved in several cellular processes, including autophagy, chaperone activity, and apoptosis. Few studies on the role of OMI/HTRA2 in Alzheimer's disease (AD) are available, but none on its relationship with the cholinergic system and neurotrophic factors as well as other AD-related proteins. In this study, immunohistochemical analyses revealed that AD patients had a higher cytosolic distribution of OMI/HTRA2 protein compared to controls. Quantitative analyses on brain extracts indicated a significant increase in the active form of OMI/HTRA2 in the AD brain. Activated OMI/HTRA2 protein positively correlated with stress-associated read-through acetylcholinesterase activity. In addition, α7 nicotinic acetylcholine receptor gene expression, a receptor also known to be localized on the outer membrane of mitochondria, showed a strong correlation with OMI/HTRA2 gene expression in three different brain regions. Interestingly, the activated OMI/HTRA2 levels also correlated with the activity of the acetylcholine-biosynthesizing enzyme, choline acetyltransferase (ChAT); with levels of the neurotrophic factors, NGF and BDNF; with levels of the soluble fragments of amyloid precursor protein (APP); and with gene expression of the microtubule-associated protein tau in the examined brain regions. Overall, the results demonstrate increased levels of the mitochondrial serine protease OMI/HTRA2, and a coherent pattern of association between the activated form of OMI/HTRA2 and several key proteins involved in AD pathology. In this paper, we propose a new hypothetical model to highlight the importance and needs of further investigation on the role of OMI/HTRA2 in the mitochondrial function and AD.
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Abstract
The neurotransmitter acetylcholine (ACh) acts as an autocrine growth factor for human lung cancer. Several lines of evidence show that lung cancer cells express all of the proteins required for the uptake of choline (choline transporter 1, choline transporter-like proteins) synthesis of ACh (choline acetyltransferase, carnitine acetyltransferase), transport of ACh (vesicular acetylcholine transport, OCTs, OCTNs) and degradation of ACh (acetylcholinesterase, butyrylcholinesterase). The released ACh binds back to nicotinic (nAChRs) and muscarinic receptors on lung cancer cells to accelerate their proliferation, migration and invasion. Out of all components of the cholinergic pathway, the nAChR-signaling has been studied the most intensely. The reason for this trend is due to genome-wide data studies showing that nicotinic receptor subtypes are involved in lung cancer risk, the relationship between cigarette smoke and lung cancer risk as well as the rising popularity of electronic cigarettes considered by many as a "safe" alternative to smoking. There are a small number of articles which review the contribution of the other cholinergic proteins in the pathophysiology of lung cancer. The primary objective of this review article is to discuss the function of the acetylcholine-signaling proteins in the progression of lung cancer. The investigation of the role of cholinergic network in lung cancer will pave the way to novel molecular targets and drugs in this lethal malignancy.
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Uspenska K, Lykhmus O, Obolenskaya M, Pons S, Maskos U, Komisarenko S, Skok M. Mitochondrial Nicotinic Acetylcholine Receptors Support Liver Cells Viability After Partial Hepatectomy. Front Pharmacol 2018; 9:626. [PMID: 29950998 PMCID: PMC6008424 DOI: 10.3389/fphar.2018.00626] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 05/24/2018] [Indexed: 12/11/2022] Open
Abstract
Nicotinic acetylcholine receptors (nAChRs) expressed on the cell plasma membrane are ligand-gated ion channels mediating fast synaptic transmission, regulating neurotransmitter and cytokine release and supporting the viability of many cell types. The nAChRs expressed in mitochondria regulate the release of pro-apoptotic factors, like cytochrome c, in ion channel-independent manner. Here we show that α3β2, α7β2, and α9α10 nAChR subtypes are up-regulated in rat liver mitochondria 3–6 h after partial hepatectomy resulting in increased sustainability of mitochondria to apoptogenic effects of Ca2+ and H2O2. In contrast, laparotomy resulted in down-regulation of all nAChR subunits, except α9, and decreased mitochondria sustainability to apoptogenic effects of Ca2+ and H2O2. Experiments performed in liver mitochondria from α3+/-, α7-/-, β4-/-, α7β2-/-, or wild-type C57Bl/6J mice demonstrated that the decrease of α3 or absence of α7 or α7/β2 subunits in mitochondria is compensated with β4 and α9 subunits, which could be found in α3β4, α4β4, α9β4, and α9α10 combinations. Mitochondria from knockout mice maintained their sustainability to Ca2+ but were differently regulated by nAChR subtype-specific ligands: PNU-282987, methyllycaconitine, dihydro-β-erythroidine, α-conotoxin MII, and α-conotoxin PeIA. It is concluded that mitochondrial nAChRs play an important role in supporting the viability of hepatic cells and, therefore, may be a pharmacological target for pro-survival therapy. The concerted action of multiple nAChR subtypes controlling either CaKMII- or Src-dependent signaling pathways in mitochondria ensures a reliable protection against apoptogenic factors of different nature.
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Affiliation(s)
- Kateryna Uspenska
- Laboratory of Cell Receptors Immunology, O. V. Palladin Institute of Biochemistry, Kiev, Ukraine
| | - Olena Lykhmus
- Laboratory of Cell Receptors Immunology, O. V. Palladin Institute of Biochemistry, Kiev, Ukraine
| | - Maria Obolenskaya
- System Biology Group, Institute of Molecular Biology and Genetics, Kiev, Ukraine
| | - Stephanie Pons
- Integrative Neurobiology of Cholinergic Systems, Institut Pasteur, Paris, France
| | - Uwe Maskos
- Integrative Neurobiology of Cholinergic Systems, Institut Pasteur, Paris, France
| | - Serhiy Komisarenko
- Laboratory of Cell Receptors Immunology, O. V. Palladin Institute of Biochemistry, Kiev, Ukraine
| | - Maryna Skok
- Laboratory of Cell Receptors Immunology, O. V. Palladin Institute of Biochemistry, Kiev, Ukraine
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36
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Nesterov SV, Skorobogatova YA, Panteleeva AA, Pavlik LL, Mikheeva IB, Yaguzhinsky LS, Nartsissov YR. NMDA and GABA receptor presence in rat heart mitochondria. Chem Biol Interact 2018; 291:40-46. [PMID: 29883723 DOI: 10.1016/j.cbi.2018.06.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 05/30/2018] [Accepted: 06/05/2018] [Indexed: 11/19/2022]
Abstract
The purpose of this study is to demonstrate the presence of three more receptors in mitochondria. Two N-methyl-d-aspartate receptor (NMDAR) subunits (NR1 and NR2B) are found by protein immunoblot and immunogold labeling in mitochondria fraction isolated from rat heart. These data allow supposing NMDAR presence and functioning in the inner mitochondrial membrane. There are no signs of receptor presence obtained in heart tissue lysate, that indicates the receptor localization exactly in mitochondria. The possible receptor functions discussed are its participation in calcium transport and in excitation-metabolism coupling. Besides, preliminary evidence is obtained of GABAA and GABAB receptors presence in heart mitochondria. One can surmise their role in metabolism regulation and their possible co-operation with NMDAR just as in the nervous system.
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Affiliation(s)
- Semen V Nesterov
- Moscow Institute of Physics and Technology, Institutskiy pereulok, 9, Dolgoprudny, 141700, Russia.
| | - Yulia A Skorobogatova
- Moscow Institute of Physics and Technology, Institutskiy pereulok, 9, Dolgoprudny, 141700, Russia.
| | - Alisa A Panteleeva
- Belozersky Research Institute for Physico Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia.
| | - Lyubov L Pavlik
- Institute of Theoretical and Experimental Biophisics Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia.
| | - Irina B Mikheeva
- Institute of Theoretical and Experimental Biophisics Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia.
| | - Lev S Yaguzhinsky
- Institute of Cytochemistry and Molecular Pharmacology, 6-th Radialnaya str. 24-14, Moscow, 115404, Russia; Belozersky Research Institute for Physico Chemical Biology, Lomonosov Moscow State University, Moscow, Russia.
| | - Yaroslav R Nartsissov
- Institute of Cytochemistry and Molecular Pharmacology, 6-th Radialnaya str. 24-14, Moscow, 115404, Russia.
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37
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Amber KT, Valdebran M, Grando SA. Non-Desmoglein Antibodies in Patients With Pemphigus Vulgaris. Front Immunol 2018; 9:1190. [PMID: 29915578 PMCID: PMC5994403 DOI: 10.3389/fimmu.2018.01190] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 05/14/2018] [Indexed: 12/14/2022] Open
Abstract
Pemphigus vulgaris (PV) is a potentially life-threatening mucocutaneous autoimmune blistering disease. Patients develop non-healing erosions and blisters due to cell–cell detachment of keratinocytes (acantholysis), with subsequent suprabasal intraepidermal splitting. Identified almost 30 years ago, desmoglein-3 (Dsg3), a Ca2+-dependent cell adhesion molecule belonging to the cadherin family, has been considered the “primary” autoantigen in PV. Proteomic studies have identified numerous autoantibodies in patients with PV that have known roles in the physiology and cell adhesion of keratinocytes. Antibodies to these autoantibodies include desmocollins 1 and 3, several muscarinic and nicotinic acetylcholine receptor subtypes, mitochondrial proteins, human leukocyte antigen molecules, thyroid peroxidase, and hSPCA1—the Ca2+/Mn2+-ATPase encoded by ATP2C1, which is mutated in Hailey–Hailey disease. Several studies have identified direct pathogenic roles of these proteins, or synergistic roles when combined with Dsg3. We review the role of these direct and indirect mechanisms of non-desmoglein autoantibodies in the pathogenesis of PV.
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Affiliation(s)
- Kyle T Amber
- Department of Dermatology, University of California Irvine, Irvine, CA, United States
| | - Manuel Valdebran
- Department of Dermatology, University of California Irvine, Irvine, CA, United States
| | - Sergei A Grando
- Department of Dermatology, University of California Irvine, Irvine, CA, United States.,Department of Dermatology, Institute for Immunology, University of California Irvine, Irvine, CA, United States.,Department of Biological Chemistry, Institute for Immunology, University of California Irvine, Irvine, CA, United States
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38
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Uspenska K, Lykhmus O, Arias HR, Pons S, Maskos U, Komisarenko S, Skok M. Positive allosteric modulators of α7* or β2* nicotinic acetylcholine receptors trigger different kinase pathways in mitochondria. Int J Biochem Cell Biol 2018; 99:226-235. [PMID: 29704624 DOI: 10.1016/j.biocel.2018.04.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 04/12/2018] [Accepted: 04/24/2018] [Indexed: 12/29/2022]
Abstract
Mitochondrial nicotinic acetylcholine receptors (nAChRs) regulate the early stage of mitochondria-driven apoptosis, including cytochrome c release. Mitochondrial nAChR signaling is mainly mediated by intra-mitochondrial kinases, in an ion-independent manner. To determine the relationship between specific nAChR subtypes and mitochondrial kinases, the effects of a set of nAChR subtype-selective positive allosteric modulators (PAMs) on cytochrome c release from mouse liver mitochondria stimulated by 0.9 μM Ca2+, 0.5 mM H2O2 or 1.0 μM wortmanin is studied. The results indicate that Ca2+-stimulated cytochrome c release from wild-type, but not α7-/-, mice mitochondria is attenuated by the potent agonist PNU-282987 or type II PAMs (PNU-120596, 4BP-TQS, and PAM-2-4), but not by NS-1738, a type I PAM. In contrast, wortmannin-stimulated cytochrome c release from wild-type and, to a lesser extent, α7-/- mice mitochondria is efficiently attenuated by the β2-selective PAM desformylfrustrabromine. In conclusion, the ligand-evoked α7* nAChR conformational changes required to induce intra-mitochondrial signaling can be triggered through orthosteric (agonists) and transmembrane (type II PAMs) sites, but not by the interaction with type I PAMs. The α7 and β2 nAChR subunits are responsible for the engagement of distinct kinase pathways, supporting the concept that multiple heteromeric nAChR subtypes ensure mitochondria resistance to various exogenous and endogenous apoptogenic agents.
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Affiliation(s)
- Kateryna Uspenska
- Palladin Institute of Biochemistry, 9, Leontovycha str., 01030, Kyiv, Ukraine
| | - Olena Lykhmus
- Palladin Institute of Biochemistry, 9, Leontovycha str., 01030, Kyiv, Ukraine
| | - Hugo R Arias
- CONICET, Godoy Cruz, 2290, Buenos Aires, Argentina
| | - Stephanie Pons
- Institut Pasteur, 25, rue du Dr Roux, 75015, Paris, France
| | - Uwe Maskos
- Institut Pasteur, 25, rue du Dr Roux, 75015, Paris, France
| | - Serghiy Komisarenko
- Palladin Institute of Biochemistry, 9, Leontovycha str., 01030, Kyiv, Ukraine
| | - Maryna Skok
- Palladin Institute of Biochemistry, 9, Leontovycha str., 01030, Kyiv, Ukraine.
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39
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Nicotine Modulates Mitochondrial Dynamics in Hippocampal Neurons. Mol Neurobiol 2018; 55:8965-8977. [PMID: 29619740 DOI: 10.1007/s12035-018-1034-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 03/23/2018] [Indexed: 01/08/2023]
Abstract
Mitochondria are widely recognized as fundamental organelles for cellular physiology and constitute the main energy source for different cellular processes. The location, morphology, and interactions of mitochondria with other organelles, such as the endoplasmic reticulum (ER), have emerged as critical events capable of determining cellular fate. Mitochondria-related functions have proven particularly relevant in neurons; mitochondria are necessary for proper neuronal morphogenesis and the highly energy-demanding synaptic transmission process. Mitochondrial health depends on balanced fusion-fission events, termed mitochondrial dynamics, to repair damaged organelles and/or improve the quality of mitochondrial function, ATP production, calcium homeostasis, and apoptosis, which represent some mitochondrial functions closely related to mitochondrial dynamics. Several neurodegenerative disorders, such as Alzheimer's, Parkinson's, and Huntington's diseases, have been correlated with severe mitochondrial dysfunction. In this regard, nicotine, which has been associated with relevant neuroprotective effects mainly through activation of the nicotinic acetylcholine receptor (nAChR), exerts its effects at least in part by acting directly on mitochondrial physiology and morphology. Additionally, a recent description of mitochondrial nAChR localization suggests a nicotine-dependent mitochondrial function. In the present work, we evaluated in cultured hipocampal neurons the effects of nicotine on mitochondrial dynamics by assessing mitochondrial morphology, membrane potential, as well as interactions between mitochondria, cytoskeleton and IP3R, levels of the cofactor PGC-1α, and fission-fusion-related proteins. Our results suggest that nicotine modulates mitochondrial dynamics and influences mitochondrial association from microtubules, increasing IP3 receptor clustering showing modulation between mitochondria-ER communications, together with the increase of mitochondrial biogenesis.
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40
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Gupta SK, Mesharam MK, Krishnamurthy S. Electromagnetic radiation 2450 MHz exposure causes cognition deficit with mitochondrial dysfunction and activation of intrinsic pathway of apoptosis in rats. J Biosci 2018. [DOI: 10.1007/s12038-018-9744-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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41
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Designing selective modulators for the nicotinic receptor subtypes: challenges and opportunities. Future Med Chem 2018; 10:433-459. [PMID: 29451400 DOI: 10.4155/fmc-2017-0169] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Nicotinic receptors are membrane proteins involved in several physiological processes. They are considered suitable drug targets for various CNS disorders or conditions, as shown by the large number of compounds which have entered clinical trials. In recent years, nonconventional agonists have been discovered: positive allosteric modulators, allosteric agonists, site-specific agonists and silent desensitizers are compounds able to modulate the receptor interacting at sites different from the orthodox one, or to desensitize the receptor without prior opening. While these new findings can further complicate the pharmacology of these proteins and the design and optimization of ligands, they undoubtedly offer new opportunities to find drugs for the many therapeutic indications involving nicotinic receptors.
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42
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Arias HR, Lykhmus O, Uspenska K, Skok M. Coronaridine congeners modulate mitochondrial α3β4* nicotinic acetylcholine receptors with different potency and through distinct intra-mitochondrial pathways. Neurochem Int 2017; 114:26-32. [PMID: 29277577 DOI: 10.1016/j.neuint.2017.12.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 12/08/2017] [Accepted: 12/21/2017] [Indexed: 12/24/2022]
Abstract
In contrast to plasma membrane-expressed nicotinic acetylcholine receptors (nAChRs), mitochondrial nAChRs function in an ion-independent manner by triggering intra-mitochondrial kinases that regulate the release of cytochrome c (Cyt c), an important step in cellular apoptosis. The aim of this study is to determine the structural requirements for mitochondrial α3β4* nAChR activation by measuring the modulatory effects of two noncompetitive antagonists of these receptors, (+)-catharanthine and (±)-18-methoxycoronaridine [(±)-18-MC], on Cyt c release from wild-type and α7-/- mice mitochondria. The sandwich ELISA results indicated that α3β4* nAChRs are present in liver mitochondria in higher amounts compared to that in brain mitochondria and that these receptors are up-regulated in α7-/- mice. Correspondingly, (±)-18-MC decreased Cyt c release from liver mitochondria of wild-type mice and from brain and liver mitochondria of α7-/- mice. The effect in wild-type mice mitochondria was mediated mainly by the Src-dependent pathway, regulating the apoptogenic activity of reactive oxygen species, while in α7-/- mice mitochondria, (±)-18-MC strongly affected the calcium-calmodulin kinase II-dependent pathway. In contrast, (+)-catharanthine was much less potent than (±)-18-MC and triggered several signaling pathways, suggesting the involvement of multiple nAChR subtypes. These results show for the first time that noncompetitive antagonists can induce mitochondrial α3β4* nAChR signaling, giving a more comprehensive understanding on the function of intracellular nAChR subtypes.
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Affiliation(s)
- Hugo R Arias
- Department of Basic Sciences, California Northstate University College of Medicine, Elk Grove, CA, USA.
| | - Olena Lykhmus
- Department of Molecular Immunology, Palladin Institute of Biochemistry NAS of Ukraine, 9, Leontovycha str., 01030 Kyiv, Ukraine
| | - Kateryna Uspenska
- Department of Molecular Immunology, Palladin Institute of Biochemistry NAS of Ukraine, 9, Leontovycha str., 01030 Kyiv, Ukraine
| | - Maryna Skok
- Department of Molecular Immunology, Palladin Institute of Biochemistry NAS of Ukraine, 9, Leontovycha str., 01030 Kyiv, Ukraine
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43
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Kumar A, Darreh-Shori T. DMSO: A Mixed-Competitive Inhibitor of Human Acetylcholinesterase. ACS Chem Neurosci 2017; 8:2618-2625. [PMID: 29017007 DOI: 10.1021/acschemneuro.7b00344] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Dimethyl sulfoxide (DMSO) is the most common organic solvent used in biochemical and cellular assays during drug discovery programs. Despite its wide use, the effect of DMSO on several enzyme classes, which are crucial targets of the new therapeutic agents, are still unexplored. Here, we report the detailed biochemical analysis of the effects of DMSO on the human acetylcholine-degrading enzyme, acetylcholinesterase (AChE), the primary target of current Alzheimer's therapeutics. Our analysis showed that DMSO is a considerably potent and highly selective irreversible mixed-competitive inhibitor of human AChE with IC50 values in the lower millimolar range, corresponding to 0.88% to 2.6% DMSO (v/v). Most importantly, 1-4% (v/v) DMSO, the commonly used experimental concentrations, showed ∼37-80% inhibition of human AChE activity. We believe that our results will assist in developing stringent protocols and help in the better interpretation of experimental outcomes during screening and biological evaluation of new drugs.
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Affiliation(s)
- Amit Kumar
- Karolinska Institutet, Center for Alzheimer Research, Department of Neurobiology,
Care Sciences, and Society, Division of Translational Alzheimer Neurobiology, NOVUM, 4th Floor, 141 86 Stockholm, Sweden
| | - Taher Darreh-Shori
- Karolinska Institutet, Center for Alzheimer Research, Department of Neurobiology,
Care Sciences, and Society, Division of Translational Alzheimer Neurobiology, NOVUM, 4th Floor, 141 86 Stockholm, Sweden
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44
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Chatterjee PK, Yeboah MM, Solanki MH, Kumar G, Xue X, Pavlov VA, Al-Abed Y, Metz CN. Activation of the cholinergic anti-inflammatory pathway by GTS-21 attenuates cisplatin-induced acute kidney injury in mice. PLoS One 2017; 12:e0188797. [PMID: 29190774 PMCID: PMC5708817 DOI: 10.1371/journal.pone.0188797] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 11/13/2017] [Indexed: 12/23/2022] Open
Abstract
Acute kidney injury (AKI) is the most common side effect of cisplatin, a widely used chemotherapy drug. Although AKI occurs in up to one third of cancer patients receiving cisplatin, effective renal protective strategies are lacking. Cisplatin targets renal proximal tubular epithelial cells leading to inflammation, reactive oxygen species, tubular cell injury, and eventually cell death. The cholinergic anti-inflammatory pathway is a vagus nerve-mediated reflex that suppresses inflammation via α7 nicotinic acetylcholine receptors (α7nAChRs). Our previous studies demonstrated the renoprotective and anti-inflammatory effects of cholinergic agonists, including GTS-21. Therefore, we examined the effect of GTS-21 on cisplatin-induced AKI. Male C57BL/6 mice received either saline or GTS-21 (4mg/kg, i.p.) twice daily for 4 days before cisplatin and treatment continued through euthanasia; 3 days post-cisplatin mice were euthanized and analyzed for markers of renal injury. GTS-21 significantly reduced cisplatin-induced renal dysfunction and injury (p<0.05). GTS-21 significantly attenuated renal Ptgs2/COX-2 mRNA and IL-6, IL-1β, and CXCL1 protein expression, as well as neutrophil infiltration after cisplatin. GTS-21 blunted cisplatin-induced renal ERK1/2 activation, as well as renal ATP depletion and apoptosis (p<0.05). GTS-21 suppressed the expression of CTR1, a cisplatin influx transporter and enhanced the expression of cisplatin efflux transporters MRP2, MRP4, and MRP6 (p<0.05). Using breast, colon, and lung cancer cell lines we showed that GTS-21 did not inhibit cisplatin’s tumor cell killing activity. GTS-21 protects against cisplatin-AKI by attenuating renal inflammation, ATP depletion and apoptosis, as well as by decreasing renal cisplatin influx and increasing efflux, without impairing cisplatin-mediated tumor cell killing. Our results support further exploring the cholinergic anti-inflammatory pathway for preventing cisplatin-induced AKI.
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Affiliation(s)
- Prodyot K Chatterjee
- Center for Biomedical Sciences, Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States of America
| | - Michael M Yeboah
- Department of Medicine, Division of Nephrology, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Malvika H Solanki
- Elmezzi Graduate School of Molecular Medicine, Northwell Health, Manhasset, NY, United States of America.,Department of Pathology and Laboratory Medicine, Medical College of Wisconsin, Milwaukee, WI, United States of America
| | - Gopal Kumar
- Elmezzi Graduate School of Molecular Medicine, Northwell Health, Manhasset, NY, United States of America
| | - Xiangying Xue
- Center for Biomedical Sciences, Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States of America
| | - Valentin A Pavlov
- Center for Biomedical Sciences, Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States of America.,Elmezzi Graduate School of Molecular Medicine, Northwell Health, Manhasset, NY, United States of America.,Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States of America
| | - Yousef Al-Abed
- Elmezzi Graduate School of Molecular Medicine, Northwell Health, Manhasset, NY, United States of America.,Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States of America.,Center for Molecular Innovation, Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States of America
| | - Christine N Metz
- Center for Biomedical Sciences, Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States of America.,Elmezzi Graduate School of Molecular Medicine, Northwell Health, Manhasset, NY, United States of America.,Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States of America
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45
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Lykhmus O, Uspenska K, Koval L, Lytovchenko D, Voytenko L, Horid'ko T, Kosiakova H, Gula N, Komisarenko S, Skok M. N-Stearoylethanolamine protects the brain and improves memory of mice treated with lipopolysaccharide or immunized with the extracellular domain of α7 nicotinic acetylcholine receptor. Int Immunopharmacol 2017; 52:290-296. [PMID: 28963942 DOI: 10.1016/j.intimp.2017.09.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 09/12/2017] [Accepted: 09/25/2017] [Indexed: 12/11/2022]
Abstract
Neuroinflammation is an important risk factor for neurodegenerative disorders like Alzheimer's disease. Nicotinic acetylcholine receptors of α7 subtype (α7 nAChRs) regulate inflammatory processes in various tissues, including the brain. N-stearoylethanolamine (NSE) is a biologically active cell membrane component with anti-inflammatory and membrane-protective properties. Previously we found that mice injected with bacterial lipopolysaccharide (LPS) or immunized with recombinant extracellular domain (1-208) of α7 nAChR subunit possessed decreased α7 nAChR levels, accumulated pathogenic amyloid-beta peptide Aβ(1-42) in the brain and demonstrated impaired episodic memory compared to non-treated mice. Here we studied the effect of NSE on behavior and brain components of LPS- treated or α7(1-208)-immunized mice. NSE, given per os, non-significantly decreased LPS-stimulated interleukin-6 elevation in the brain, slowed down the α7(1-208)-specific IgG antibody production and prevented the antibody penetration into the brain of mice. NSE prevented the loss of α7 nAChRs and accumulation of α7-bound Aβ(1-42) in the brain and brain mitochondria of LPS-treated or α7(1-208)-immunized mice and supported mitochondria resistance to apoptosis by attenuating Ca2+-stimulated cytochrome c release. Finally, NSE significantly improved episodic memory of mice impaired by either LPS treatment or immunization with α7(1-208). The results of our study demonstrate a therapeutic potential of NSE for prevention of cognitive disfunction caused by neuroinflammation or autoimmune reaction that allows suggesting this drug as a candidate for the treatment or prophylaxis of Alzheimer's pathology.
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Affiliation(s)
- Olena Lykhmus
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry, 9, Leontovycha str, 01030 Kyiv, Ukraine
| | - Kateryna Uspenska
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry, 9, Leontovycha str, 01030 Kyiv, Ukraine
| | - Lyudmyla Koval
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry, 9, Leontovycha str, 01030 Kyiv, Ukraine
| | - Daria Lytovchenko
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry, 9, Leontovycha str, 01030 Kyiv, Ukraine
| | - Larysa Voytenko
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry, 9, Leontovycha str, 01030 Kyiv, Ukraine
| | - Tetyana Horid'ko
- Department of Lipid Biochemistry, Palladin Institute of Biochemistry, 9, Leontovycha str, 01030 Kyiv, Ukraine
| | - Halyna Kosiakova
- Department of Lipid Biochemistry, Palladin Institute of Biochemistry, 9, Leontovycha str, 01030 Kyiv, Ukraine
| | - Nadiya Gula
- Department of Lipid Biochemistry, Palladin Institute of Biochemistry, 9, Leontovycha str, 01030 Kyiv, Ukraine
| | - Serhiy Komisarenko
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry, 9, Leontovycha str, 01030 Kyiv, Ukraine
| | - Maryna Skok
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry, 9, Leontovycha str, 01030 Kyiv, Ukraine.
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46
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Lykhmus O, Voytenko LP, Lips KS, Bergen I, Krasteva-Christ G, Vetter DE, Kummer W, Skok M. Nicotinic Acetylcholine Receptor α9 and α10 Subunits Are Expressed in the Brain of Mice. Front Cell Neurosci 2017; 11:282. [PMID: 28955208 PMCID: PMC5601054 DOI: 10.3389/fncel.2017.00282] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 08/30/2017] [Indexed: 01/24/2023] Open
Abstract
The α9 and α10 nicotinic acetylcholine receptor (nAChR) subunits are likely to be the evolutionary precursors to the entire cys-loop superfamily of ligand-gated ion channels, which includes acetylcholine, GABA, glycine and serotonin ionotropic receptors. nAChRs containing α9 and α10 subunits are found in the inner ear, dorsal root ganglia and many non-excitable tissues, but their expression in the central nervous system has not been definitely demonstrated. Here we show the presence of both α9 and α10 nAChR subunits in the mouse brain by RT-PCR and immunochemical approaches with a range of nAChR subunit-selective antibodies, which selectivity was demonstrated in the brain preparations of α7−/−, α9−/− and α10−/− mice. The α9 and α10 RNA transcripts were found in medulla oblongata (MO), cerebellum, midbrain (MB), thalamus and putamen (TP), somatosensory cortex (SC), frontal cortex (FC) and hippocampus. High α9-selective signal in ELISA was observed in the FC, SC, MO, TP and hippocampus and α10-selective signal was the highest in MO and FC. The α9 and α10 proteins were found in the brain mitochondria, while their presence on the plasma membrane has not been definitely confirmed The α7-, α9- and α10-selective antibodies stained mainly neurons and hypertrophied astrocytes, but not microglia. The α9- and α10-positive cells formed ordered structures or zones in cerebellum and superior olive (SO) and were randomly distributed among α7-positive cells in the FC; they were found in CA1, CA3 and CA4, but not in CA2 region of the hippocampus. The α9 and α10 subunits were up-regulated in α7−/− mice and both α7 and α9 subunits were down-regulated in α10−/− mice. We conclude that α9 and α10 nAChR subunits are expressed in distinct neurons of the mouse brain and in the brain mitochondria and are compensatory up-regulated in the absence of α7 subunits.
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Affiliation(s)
- Olena Lykhmus
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry (NAS Ukraine)Kiev, Ukraine
| | - Larysa P Voytenko
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry (NAS Ukraine)Kiev, Ukraine
| | - Katrin S Lips
- Laboratory of Experimental Trauma Surgery, Justus-Liebig University GiessenGiessen, Germany
| | - Ivonne Bergen
- Laboratory of Experimental Trauma Surgery, Justus-Liebig University GiessenGiessen, Germany
| | | | - Douglas E Vetter
- Department of Neurobiology and Anatomical Sciences, University of Mississippi Medical CenterJackson, MS, United States
| | - Wolfgang Kummer
- Institute for Anatomy and Cell Biology, Justus-Liebig University GiessenGiessen, Germany.,German Center for Lung Research (DZL)Giessen, Germany
| | - Maryna Skok
- Laboratory of Cell Receptors Immunology, Palladin Institute of Biochemistry (NAS Ukraine)Kiev, Ukraine
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47
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Muramatsu I, Uwada J, Masuoka T, Yoshiki H, Sada K, Lee KS, Nishio M, Ishibashi T, Taniguchi T. Regulation of synaptic acetylcholine concentrations by acetylcholine transport in rat striatal cholinergic transmission. J Neurochem 2017; 143:76-86. [PMID: 28700094 DOI: 10.1111/jnc.14127] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 06/17/2017] [Accepted: 06/29/2017] [Indexed: 11/29/2022]
Abstract
In addition to hydrolysis by acetylcholine esterase (AChE), acetylcholine (ACh) is also directly taken up into brain tissues. In this study, we examined whether the uptake of ACh is involved in the regulation of synaptic ACh concentrations. Superfusion experiments with rat striatal segments pre-incubated with [3 H]choline were performed using an ultra-mini superfusion vessel, which was developed to minimize superfusate retention within the vessel. Hemicholinium-3 (HC-3) at concentrations less than 1 μM, selectively inhibited the uptake of [3 H]choline by the high affinity-choline transporter 1 and had no effect on basal and electrically evoked [3 H]efflux in superfusion experiments. In contrast, HC-3 at higher concentrations, as well as tetraethylammonium (>10 μM), which inhibited the uptake of both [3 H]choline and [3 H]ACh, increased basal [3 H]overflow and potentiated electrically evoked [3 H]efflux. These effects of HC-3 and tetraethylammonium were also observed under conditions where tissue AChE was irreversibly inactivated by diisopropylfluorophosphate. Specifically, the potentiation of evoked [3 H]efflux was significantly higher in AChE-inactivated preparations and was attenuated by atropine. On the other hand, striatal segments pre-incubated with [3 H]ACh failed to increase [3 H]overflow in response to electrical stimulation. These results show that synaptic ACh concentrations are significantly regulated by the postsynaptic uptake of ACh, as well as by AChE hydrolysis and modulation of ACh release mediated through presynaptic muscarinic ACh receptors. In addition, these data suggest that the recycling of ACh-derived choline may be minor in cholinergic terminals. This study reveals a new mechanism of cholinergic transmission in the central nervous system.
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Affiliation(s)
- Ikunobu Muramatsu
- Department of Pharmacology, School of Medicine, Kanazawa Medical University, Uchinada, Ishikawa, Japan.,Division of Genomic Science and Microbiology, School of Medicine, University of Fukui, Eiheiji, Fukui, Japan.,Kimura Hospital, Awara, Fukui, Japan
| | - Junsuke Uwada
- Division of Cellular Signal Transduction, Department of Biochemistry, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
| | - Takayoshi Masuoka
- Department of Pharmacology, School of Medicine, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Hatsumi Yoshiki
- Division of Genomic Science and Microbiology, School of Medicine, University of Fukui, Eiheiji, Fukui, Japan
| | - Kiyonao Sada
- Division of Genomic Science and Microbiology, School of Medicine, University of Fukui, Eiheiji, Fukui, Japan
| | - Kung-Shing Lee
- Division of Genomic Science and Microbiology, School of Medicine, University of Fukui, Eiheiji, Fukui, Japan.,Department of Surgery, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Matomo Nishio
- Department of Pharmacology, School of Medicine, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Takaharu Ishibashi
- Department of Pharmacology, School of Medicine, Kanazawa Medical University, Uchinada, Ishikawa, Japan
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48
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Uspenska K, Lykhmus O, Gergalova G, Chernyshov V, Arias HR, Komisarenko S, Skok M. Nicotine facilitates nicotinic acetylcholine receptor targeting to mitochondria but makes them less susceptible to selective ligands. Neurosci Lett 2017; 656:43-50. [DOI: 10.1016/j.neulet.2017.07.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/21/2017] [Accepted: 07/05/2017] [Indexed: 10/19/2022]
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49
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Mavropoulos SA, Khan NS, Levy ACJ, Faliks BT, Sison CP, Pavlov VA, Zhang Y, Ojamaa K. Nicotinic acetylcholine receptor-mediated protection of the rat heart exposed to ischemia reperfusion. Mol Med 2017; 23:120-133. [PMID: 28598489 DOI: 10.2119/molmed.2017.00091] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 05/31/2017] [Indexed: 12/11/2022] Open
Abstract
Reperfusion injury following acute myocardial infarction is associated with significant morbidity. Activation of neuronal or non-neuronal cholinergic pathways in the heart has been shown to reduce ischemic injury and this effect has been attributed primarily to muscarinic acetylcholine receptors. In contrast, the role of nicotinic receptors, specifically alpha-7 subtype (α7nAChR) in the myocardium remains unknown which offers an opportunity to potentially repurpose several agonists/modulators that are currently under development for neurologic indications. Treatment of ex vivo and in vivo rat models of cardiac ischemia/reperfusion (I/R) with a selective α7nAChR agonist (GTS21) showed significant increases in left ventricular developing pressure, and rates of pressure development without effects on heart rate. These positive functional effects were blocked by co-administration with methyllycaconatine (MLA), a selective antagonist of α7nAChRs. In vivo, delivery of GTS21 at the initiation of reperfusion, reduced infarct size by 42% (p<0.01) and decreased tissue reactive oxygen species (ROS) by 62% (p<0.01). Flow cytometry of MitoTracker Red stained mitochondria showed that mitochondrial membrane potential was normalized in mitochondria isolated from GTS21 treated compared to untreated I/R hearts. Intracellular ATP concentration in cultured cardiomyocytes exposed to hypoxia/reoxygenation was reduced (p<0.001), but significantly increased to normoxic levels with GTS21 treatment, and this was abrogated by MLA pretreatment. Activation of stress-activated kinases, JNK and p38MAPK, were significantly reduced by GTS21 in I/R. We conclude that targeting myocardial 17nAChRs in I/R may provide therapeutic benefit by improving cardiac contractile function through a mechanism that preserves mitochondrial membrane potential, maintains intracellular ATP and reduces ROS generation, thus limiting infarct size.
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Affiliation(s)
- Spyros A Mavropoulos
- Center for Heart and Lung Research, Northwell Health, Manhasset, NY.,Hofstra Northwell School of Medicine at Hofstra University, Hempstead, NY
| | - Nayaab S Khan
- Center for Heart and Lung Research, Northwell Health, Manhasset, NY
| | - Asaph C J Levy
- Hofstra Northwell School of Medicine at Hofstra University, Hempstead, NY
| | - Bradley T Faliks
- Hofstra Northwell School of Medicine at Hofstra University, Hempstead, NY
| | - Cristina P Sison
- Biostatistics Unit, The Feinstein Institute for Medical Research at Northwell Health, Manhasset, NY
| | - Valentin A Pavlov
- Biostatistics Unit, The Feinstein Institute for Medical Research at Northwell Health, Manhasset, NY.,Laboratory for Biomedical Sciences, The Feinstein Institute for Medical Research at Northwell Health, Manhasset, NY
| | - Youhua Zhang
- Dept. of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY, USA
| | - Kaie Ojamaa
- Center for Heart and Lung Research, Northwell Health, Manhasset, NY.,Hofstra Northwell School of Medicine at Hofstra University, Hempstead, NY.,Dept. of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY, USA
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50
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LaLone CA, Villeneuve DL, Wu-Smart J, Milsk RY, Sappington K, Garber KV, Housenger J, Ankley GT. Weight of evidence evaluation of a network of adverse outcome pathways linking activation of the nicotinic acetylcholine receptor in honey bees to colony death. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 584-585:751-775. [PMID: 28126277 PMCID: PMC6156782 DOI: 10.1016/j.scitotenv.2017.01.113] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 01/17/2017] [Accepted: 01/18/2017] [Indexed: 04/14/2023]
Abstract
Ongoing honey bee (Apis mellifera) colony losses are of significant international concern because of the essential role these insects play in pollinating crops. Both chemical and non-chemical stressors have been implicated as possible contributors to colony failure; however, the potential role(s) of commonly-used neonicotinoid insecticides has emerged as particularly concerning. Neonicotinoids act on the nicotinic acetylcholine receptors (nAChRs) in the central nervous system to eliminate pest insects. However, mounting evidence indicates that neonicotinoids also may adversely affect beneficial pollinators, such as the honey bee, via impairments on learning and memory, and ultimately foraging success. The specific mechanisms linking activation of the nAChR to adverse effects on learning and memory are uncertain. Additionally, clear connections between observed impacts on individual bees and colony level effects are lacking. The objective of this review was to develop adverse outcome pathways (AOPs) as a means to evaluate the biological plausibility and empirical evidence supporting (or refuting) the linkage between activation of the physiological target site, the nAChR, and colony level consequences. Potential for exposure was not a consideration in AOP development and therefore this effort should not be considered a risk assessment. Nonetheless, development of the AOPs described herein has led to the identification of research gaps which, for example, may be of high priority in understanding how perturbation of pathways involved in neurotransmission can adversely affect normal colony functions, causing colony instability and subsequent bee population failure. A putative AOP network was developed, laying the foundation for further insights as to the role of combined chemical and non-chemical stressors in impacting bee populations. Insights gained from the AOP network assembly, which more realistically represents multi-stressor impacts on honey bee colonies, are promising toward understanding common sensitive nodes in key biological pathways and identifying where mitigation strategies may be focused to reduce colony losses.
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Affiliation(s)
- Carlie A LaLone
- U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid-Continent Ecology Division, 6201 Congdon Blvd., Duluth, MN 55804, USA.
| | - Daniel L Villeneuve
- U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid-Continent Ecology Division, 6201 Congdon Blvd., Duluth, MN 55804, USA
| | - Judy Wu-Smart
- University of Nebraska-Lincoln, Department of Entomology, 105A Entomology Hall, Lincoln, NE 68583, USA
| | - Rebecca Y Milsk
- ORISE Research Participation Program, U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid-Continent Ecology Division, 6201 Congdon Blvd., Duluth, MN 55804, USA
| | - Keith Sappington
- U.S. Environmental Protection Agency, Office of Pesticide Programs, Washington D.C. 20460, USA
| | - Kristina V Garber
- U.S. Environmental Protection Agency, Office of Pesticide Programs, Washington D.C. 20460, USA
| | - Justin Housenger
- U.S. Environmental Protection Agency, Office of Pesticide Programs, Washington D.C. 20460, USA
| | - Gerald T Ankley
- U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid-Continent Ecology Division, 6201 Congdon Blvd., Duluth, MN 55804, USA
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