1
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Gilbert E, Žagar A, López-Darias M, Megía-Palma R, Lister KA, Jones MD, Carretero MA, Serén N, Beltran-Alvarez P, Valero KCW. Environmental factors influence cross-talk between a heat shock protein and an oxidative stress protein modification in the lizard Gallotia galloti. PLoS One 2024; 19:e0300111. [PMID: 38470891 DOI: 10.1371/journal.pone.0300111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 02/21/2024] [Indexed: 03/14/2024] Open
Abstract
Better understanding how organisms respond to their abiotic environment, especially at the biochemical level, is critical in predicting population trajectories under climate change. In this study, we measured constitutive stress biomarkers and protein post-translational modifications associated with oxidative stress in Gallotia galloti, an insular lizard species inhabiting highly heterogeneous environments on Tenerife. Tenerife is a small volcanic island in a relatively isolated archipelago off the West coast of Africa. We found that expression of GRP94, a molecular chaperone protein, and levels of protein carbonylation, a marker of cellular stress, change across different environments, depending on solar radiation-related variables and topology. Here, we report in a wild animal population, cross-talk between the baseline levels of the heat shock protein-like GRP94 and oxidative damage (protein carbonylation), which are influenced by a range of available temperatures, quantified through modelled operative temperature. This suggests a dynamic trade-off between cellular homeostasis and oxidative damage in lizards adapted to this thermally and topologically heterogeneous environment.
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Affiliation(s)
- Edward Gilbert
- School of Natural Sciences, The University of Hull, Hull, United Kingdom
- Energy and Environment Institute, The University of Hull, Hull, United Kingdom
| | - Anamarija Žagar
- National Institute of Biology, Ljubljana, Slovenia
- CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto Campus de Vairão, Vairão, Portugal
| | - Marta López-Darias
- Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), La Laguna, Tenerife, Canary Islands, Spain
| | - Rodrigo Megía-Palma
- CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto Campus de Vairão, Vairão, Portugal
- Universidad de Alcalá (UAH), Biomedicine and Biotechnology, Alcalá de Henares, Madrid, Spain
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, Portugal
| | - Karen A Lister
- Biomedical Institute for Multimorbidity, Centre for Biomedicine, Hull York Medical School, The University of Hull, Hull, United Kingdom
| | - Max Dolton Jones
- Department of Fish and Wildlife Conservation, Virginia Tech, Blacksburg, VA, United States of America
| | - Miguel A Carretero
- CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto Campus de Vairão, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Nina Serén
- CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto Campus de Vairão, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Pedro Beltran-Alvarez
- Biomedical Institute for Multimorbidity, Centre for Biomedicine, Hull York Medical School, The University of Hull, Hull, United Kingdom
| | - Katharina C Wollenberg Valero
- School of Natural Sciences, The University of Hull, Hull, United Kingdom
- School of Biology and Environmental Science, University College Dublin, Belfield Campus, Dublin, Ireland
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2
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Barry A, Samuel SF, Hosni I, Moursi A, Feugere L, Sennett CJ, Deepak S, Achawal S, Rajaraman C, Iles A, Wollenberg Valero KC, Scott IS, Green V, Stead LF, Greenman J, Wade MA, Beltran-Alvarez P. Investigating the effects of arginine methylation inhibitors on microdissected brain tumour biopsies maintained in a miniaturised perfusion system. Lab Chip 2023; 23:2664-2682. [PMID: 37191188 DOI: 10.1039/d3lc00204g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Arginine methylation is a post-translational modification that consists of the transfer of one or two methyl (CH3) groups to arginine residues in proteins. Several types of arginine methylation occur, namely monomethylation, symmetric dimethylation and asymmetric dimethylation, which are catalysed by different protein arginine methyltransferases (PRMTs). Inhibitors of PRMTs have recently entered clinical trials to target several types of cancer, including gliomas (NCT04089449). People with glioblastoma (GBM), the most aggressive form of brain tumour, are among those with the poorest quality of life and likelihood of survival of anyone diagnosed with cancer. There is currently a lack of (pre)clinical research on the possible application of PRMT inhibitors to target brain tumours. Here, we set out to investigate the effects of clinically-relevant PRMT inhibitors on GBM biopsies. We present a new, low-cost, easy to fabricate perfusion device that can maintain GBM tissue in a viable condition for at least eight days post-surgical resection. The miniaturised perfusion device enables the treatment of GBM tissue with PRMT inhibitors ex vivo, and we observed a two-fold increase in apoptosis in treated samples compared to parallel control experiments. Mechanistically, we show thousands of differentially expressed genes after treatment, and changes in the type of arginine methylation of the RNA binding protein FUS that are consistent with hundreds of differential gene splicing events. This is the first time that cross-talk between different types of arginine methylation has been observed in clinical samples after treatment with PRMT inhibitors.
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Affiliation(s)
- Antonia Barry
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, UK.
| | - Sabrina F Samuel
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, UK.
| | - Ines Hosni
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, UK.
| | - Amr Moursi
- Department of Neurosurgery, Hull University Teaching Hospitals NHS Trust, Hull Royal Infirmary, Hull, UK
| | - Lauric Feugere
- Department of Biological and Marine Sciences, University of Hull, Hull, UK
| | | | - Srihari Deepak
- Department of Neurosurgery, Hull University Teaching Hospitals NHS Trust, Hull Royal Infirmary, Hull, UK
| | - Shailendra Achawal
- Department of Neurosurgery, Hull University Teaching Hospitals NHS Trust, Hull Royal Infirmary, Hull, UK
| | - Chittoor Rajaraman
- Department of Neurosurgery, Hull University Teaching Hospitals NHS Trust, Hull Royal Infirmary, Hull, UK
| | | | | | - Ian S Scott
- Neuroscience Laboratories, The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - Vicky Green
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, UK.
| | - Lucy F Stead
- Leeds Institute of Medical Research at St James's, St James's University Hospital, Leeds, UK
| | - John Greenman
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, UK.
| | - Mark A Wade
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, UK.
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3
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Feugere L, Bates A, Emagbetere T, Chapman E, Malcolm LE, Bulmer K, Hardege J, Beltran-Alvarez P, Wollenberg Valero KC. Heat induces multiomic and phenotypic stress propagation in zebrafish embryos. PNAS Nexus 2023; 2:pgad137. [PMID: 37228511 PMCID: PMC10205475 DOI: 10.1093/pnasnexus/pgad137] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 04/11/2023] [Indexed: 05/27/2023]
Abstract
Heat alters biology from molecular to ecological levels, but may also have unknown indirect effects. This includes the concept that animals exposed to abiotic stress can induce stress in naive receivers. Here, we provide a comprehensive picture of the molecular signatures of this process, by integrating multiomic and phenotypic data. In individual zebrafish embryos, repeated heat peaks elicited both a molecular response and a burst of accelerated growth followed by a growth slowdown in concert with reduced responses to novel stimuli. Metabolomes of the media of heat treated vs. untreated embryos revealed candidate stress metabolites including sulfur-containing compounds and lipids. These stress metabolites elicited transcriptomic changes in naive receivers related to immune response, extracellular signaling, glycosaminoglycan/keratan sulfate, and lipid metabolism. Consequently, non-heat-exposed receivers (exposed to stress metabolites only) experienced accelerated catch-up growth in concert with reduced swimming performance. The combination of heat and stress metabolites accelerated development the most, mediated by apelin signaling. Our results prove the concept of indirect heat-induced stress propagation toward naive receivers, inducing phenotypes comparable with those resulting from direct heat exposure, but utilizing distinct molecular pathways. Group-exposing a nonlaboratory zebrafish line, we independently confirm that the glycosaminoglycan biosynthesis-related gene chs1 and the mucus glycoprotein gene prg4a, functionally connected to the candidate stress metabolite classes sugars and phosphocholine, are differentially expressed in receivers. This hints at the production of Schreckstoff-like cues in receivers, leading to further stress propagation within groups, which may have ecological and animal welfare implications for aquatic populations in a changing climate.
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Affiliation(s)
- Lauric Feugere
- Department of Biological and Marine Sciences, University of Hull, Kingston upon Hull HU6 7RX, UK
| | - Adam Bates
- Department of Biological and Marine Sciences, University of Hull, Kingston upon Hull HU6 7RX, UK
- Wellcome Sanger Institute, Hinxton CB10 1SA, UK
| | - Timothy Emagbetere
- Department of Biological and Marine Sciences, University of Hull, Kingston upon Hull HU6 7RX, UK
| | - Emma Chapman
- Department of Biological and Marine Sciences, University of Hull, Kingston upon Hull HU6 7RX, UK
| | - Linsey E Malcolm
- Biomedical Institute for Multimorbidities, Centre for Biomedicine, Hull York Medical School, University of Hull, Kingston upon Hull HU6 7RX, UK
| | - Kathleen Bulmer
- Biomedical Institute for Multimorbidities, Centre for Biomedicine, Hull York Medical School, University of Hull, Kingston upon Hull HU6 7RX, UK
| | - Jörg Hardege
- Department of Biological and Marine Sciences, University of Hull, Kingston upon Hull HU6 7RX, UK
| | - Pedro Beltran-Alvarez
- Biomedical Institute for Multimorbidities, Centre for Biomedicine, Hull York Medical School, University of Hull, Kingston upon Hull HU6 7RX, UK
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4
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Moursi A, Barry A, Achawal S, Rajaraman C, Feugere L, Beltran-Alvarez P, Greenman J. Evaluation of a Panel of 105 Cytokines from Human Glioblastoma (GBM) Tissue Maintained, and Treated, on a Unique Microfluidic Platform. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac200.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
AIMS
The first aim was to measure the changes in the levels of 105 cytokines potentially released by GBM tissue maintained on-chip. The second aim was to compare the cytokine profiles from control GBM tissue and tissue treated with anti-GBM drugs {temozolomide (TMZ) at 1 and 10μM both with 1μM arginine methylation inhibitors}.
METHOD
Intra-operative tissue biopsies were taken from the tumour and transferred immediately from the operating theatre to Hull University laboratories (< 1 hour). Tissue samples were maintained in a viable state in a bespoke chip device for eight days. The biopsy was perfused (3μl/min) with culture medium, with or without drug treatment. Effluents from the biopsies were collected at 24h intervals. Cytokines levels were measured using the Proteome Profiler Human XL Cytokine Array Kit (R&D Systems), each membrane is spotted with 105 different cytokine antibodies in duplicate.
RESULTS
Six GBM diagnosed patients (five negative for MGMT) were recruited and studied. Eleven cytokines showed consistent, high level, release from GBM tissue either in control or treated samples: Chitinase3-like1, IL8(CXCL8) ,MCP-1(CCL2 ),MIF(Macrophage migration inhibitory factor), MMP-9(Matrix metallopeptidase 9), Osteopontin(OPN), Serpin E1, VEGF(Vascular endothelial growth factor) ,Apolipoprotein A-I, Angiogenin and Emmprin. Multivariate analysis (PERMANOVA) did not show evidence for differential cytokine release profiles with time (P=0.113), treatment (P=0.629), , nor the combined interaction (P=0.936).
CONCLUSION
GBM biopsies remained viable on the microfluidic platform, shown by sustained cytokine production cytokines. We have also shown that treatment with TMZ plus arginine methylation inhibitors does not significantly affect cytokine release over an eight day period.
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Affiliation(s)
- Amr Moursi
- Hull University Teaching Hospitals NHS Trust
| | - Antonia Barry
- Department of Biomedical Sciences, University of Hull
| | | | | | | | | | - John Greenman
- Department of Biomedical Sciences, University of Hull
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5
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Marsden AJ, Riley DRJ, Birkett S, Rodriguez-Barucg Q, Guinn BA, Carroll S, Ingle L, Sathyapalan T, Beltran-Alvarez P. Love is in the hair: arginine methylation of human hair proteins as novel cardiovascular biomarkers. Amino Acids 2022; 54:591-600. [PMID: 34181092 PMCID: PMC9117359 DOI: 10.1007/s00726-021-03024-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 06/17/2021] [Indexed: 12/25/2022]
Abstract
Cardiovascular disease is the major cause of death worldwide. Extensive cardiovascular biomarkers are available using blood tests but very few, if any, investigations have described non-invasive tests for cardiovascular biomarkers based on readily available hair samples. Here we show, first, that human hair proteins are post-translationally modified by arginine methylation (ArgMe). Using western blot, proteomic data mining and mass spectrometry, we identify several ArgMe events in hair proteins and we show that keratin-83 is extensively modified by ArgMe in the human hair. Second, using a preliminary cohort (n = 18) of heterogenous healthy donors, we show that the levels of protein ArgMe in hair correlate with serum concentrations of a well-established cardiovascular biomarker, asymmetric dimethylarginine (ADMA). Compared to blood collection, hair sampling is cheaper, simpler, requires minimal training and carries less health and safety and ethical risks. For these reasons, developing the potential of hair protein ArgMe as clinically useful cardiovascular biomarkers through further research could be useful in future prevention and diagnosis of cardiovascular disease.
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Affiliation(s)
| | - David R J Riley
- Department of Biomedical Sciences, University of Hull, Cottingham Rd, Hull, HU6 7RX, UK
| | - Stefan Birkett
- Department of Sport, Health and Exercise Science, University of Hull, Hull, UK
- School of Sport and Health Sciences, University of Central Lancashire, Preston, UK
| | | | - Barbara-Ann Guinn
- Department of Biomedical Sciences, University of Hull, Cottingham Rd, Hull, HU6 7RX, UK
| | - Sean Carroll
- Department of Sport, Health and Exercise Science, University of Hull, Hull, UK
| | - Lee Ingle
- Department of Sport, Health and Exercise Science, University of Hull, Hull, UK
| | - Thozhukat Sathyapalan
- Academic Endocrinology, Diabetes and Metabolism, Hull York Medical School, University of Hull, Hull, UK
| | - Pedro Beltran-Alvarez
- Department of Biomedical Sciences, University of Hull, Cottingham Rd, Hull, HU6 7RX, UK.
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6
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Feugere L, Scott VF, Rodriguez-Barucg Q, Beltran-Alvarez P, Wollenberg Valero KC. Thermal stress induces a positive phenotypic and molecular feedback loop in zebrafish embryos. J Therm Biol 2021; 102:103114. [PMID: 34863478 DOI: 10.1016/j.jtherbio.2021.103114] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/28/2021] [Accepted: 10/20/2021] [Indexed: 12/17/2022]
Abstract
Aquatic organisms must cope with both rising and rapidly changing temperatures. These thermal changes can affect numerous traits, from molecular to ecological scales. Biotic stressors are already known to induce the release of chemical cues which trigger behavioural responses in other individuals. In this study, we infer whether fluctuating temperature, as an abiotic stressor, may similarly induce stress-like responses in individuals not directly exposed to the stressor. To test this hypothesis, zebrafish (Danio rerio) embryos were exposed for 24 h to fluctuating thermal stress, to medium in which another embryo was thermally stressed before ("stress medium"), and to a combination of these. Growth, behaviour, expression of molecular markers, and of whole-embryo cortisol were used to characterise the thermal stress response and its propagation between embryos. Both fluctuating high temperature and stress medium significantly accelerated development, by shifting stressed embryos from segmentation to pharyngula stages, and altered embryonic activity. Importantly, we found that the expression of sulfide:quinone oxidoreductase (SQOR), the antioxidant gene SOD1, and of interleukin-1β (IL-1β) were significantly altered by stress medium. This study illustrates the existence of positive thermal stress feedback loops in zebrafish embryos where heat stress can induce stress-like responses in conspecifics, but which might operate via different molecular pathways. If similar effects also occur under less severe heat stress regimes, this mechanism may be relevant in natural settings as well.
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Affiliation(s)
- Lauric Feugere
- Department of Biological and Marine Sciences, University of Hull, Cottingham Road, Kingston Upon Hull, HU6 7RX, United Kingdom
| | - Victoria F Scott
- Department of Biological and Marine Sciences, University of Hull, Cottingham Road, Kingston Upon Hull, HU6 7RX, United Kingdom; Energy and Environment Institute, University of Hull, Cottingham Road, Kingston Upon Hull, HU6 7RX, United Kingdom
| | - Quentin Rodriguez-Barucg
- Department of Biomedical Sciences, University of Hull, Cottingham Road, Kingston Upon Hull, HU6 7RX, United Kingdom
| | - Pedro Beltran-Alvarez
- Department of Biomedical Sciences, University of Hull, Cottingham Road, Kingston Upon Hull, HU6 7RX, United Kingdom
| | - Katharina C Wollenberg Valero
- Department of Biological and Marine Sciences, University of Hull, Cottingham Road, Kingston Upon Hull, HU6 7RX, United Kingdom.
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7
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Wollenberg Valero KC, Garcia-Porta J, Irisarri I, Feugere L, Bates A, Kirchhof S, Jovanović Glavaš O, Pafilis P, Samuel SF, Müller J, Vences M, Turner AP, Beltran-Alvarez P, Storey KB. Functional genomics of abiotic environmental adaptation in lacertid lizards and other vertebrates. J Anim Ecol 2021; 91:1163-1179. [PMID: 34695234 DOI: 10.1111/1365-2656.13617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 09/27/2021] [Indexed: 11/27/2022]
Abstract
Understanding the genomic basis of adaptation to different abiotic environments is important in the context of climate change and resulting short-term environmental fluctuations. Using functional and comparative genomics approaches, we here investigated whether signatures of genomic adaptation to a set of environmental parameters are concentrated in specific subsets of genes and functions in lacertid lizards and other vertebrates. We first identify 200 genes with signatures of positive diversifying selection from transcriptomes of 24 species of lacertid lizards and demonstrate their involvement in physiological and morphological adaptations to climate. To understand how functionally similar these genes are to previously predicted candidate functions for climate adaptation and to compare them with other vertebrate species, we then performed a meta-analysis of 1,100 genes under selection obtained from -omics studies in vertebrate species adapted to different abiotic factors. We found that the vertebrate gene set formed a tightly connected interactome, which was to 23% enriched in previously predicted functions of adaptation to climate, and to a large part (18%) involved in organismal stress response. We found a much higher degree of identical genes being repeatedly selected among different animal groups (43.6%), and of functional similarity and post-translational modifications than expected by chance, and no clear functional division between genes used for ectotherm and endotherm physiological strategies. In total, 171 out of 200 genes of Lacertidae were part of this network. These results highlight an important role of a comparatively small set of genes and their functions in environmental adaptation and narrow the set of candidate pathways and markers to be used in future research on adaptation and stress response related to climate change.
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Affiliation(s)
| | - Joan Garcia-Porta
- Department of Biology, Washington University in St. Louis, St. Louis, MO, USA
| | - Iker Irisarri
- Department of Applied Bioinformatics, Institute for Microbiology and Genetics, University of Göttingen, Göttingen, Germany.,Campus Institut Data Science (CIDAS), Göttingen, Germany
| | - Lauric Feugere
- Department of Biological and Marine Sciences, University of Hull, Kingston-Upon-Hull, UK
| | - Adam Bates
- Department of Biological and Marine Sciences, University of Hull, Kingston-Upon-Hull, UK
| | - Sebastian Kirchhof
- Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Berlin, Germany.,New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
| | | | - Panayiotis Pafilis
- Section of Zoology and Marine Biology, Department of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Sabrina F Samuel
- Department of Biomedical Sciences, University of Hull, Kingston-Upon-Hull, UK
| | - Johannes Müller
- Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Berlin, Germany
| | - Miguel Vences
- Zoological Institute, Braunschweig University of Technology, Braunschweig, Germany
| | - Alexander P Turner
- Department of Computer Science, University of Nottingham, Nottingham, UK
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8
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Marsden AJ, Riley DRJ, Barry A, Khalil JS, Guinn BA, Kemp NT, Rivero F, Beltran-Alvarez P. Inhibition of Arginine Methylation Impairs Platelet Function. ACS Pharmacol Transl Sci 2021; 4:1567-1577. [PMID: 34661075 DOI: 10.1021/acsptsci.1c00135] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Indexed: 11/28/2022]
Abstract
Protein arginine methyltransferases (PRMTs) catalyze the transfer of methyl groups to arginine residues in proteins. PRMT inhibitors are novel, promising drugs against cancer that are currently in clinical trials, which include oral administration of the drugs. However, off-target activities of systemically available PRMT inhibitors have not yet been investigated. In this work, we study the relevance of arginine methylation in platelets and investigate the effect of PRMT inhibitors on platelet function and on the expression of relevant platelet receptors. We show that (1) key platelet proteins are modified by arginine methylation; (2) incubation of human platelets with PRMT inhibitors for 4 h results in impaired capacity of platelets to aggregate in response to thrombin and collagen, with IC50 values in the μM range; and (3) treatment with PRMT inhibitors leads to decreased membrane expression and reduced activation of the critical platelet integrin αIIbβ3. Our contribution opens new avenues for research on arginine methylation in platelets, including the repurposing of arginine methylation inhibitors as novel antiplatelet drugs. We also recommend that current and future clinical trials with PRMT inhibitors consider any adverse effects associated with platelet inhibition of these emerging anticancer drugs.
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Affiliation(s)
| | - David R J Riley
- Centre for Atherothrombosis and Metabolic Disease, Hull York Medical School, Hull HU6 7RX, U.K
| | - Antonia Barry
- Department of Biomedical Sciences, University of Hull, Hull HU6 7RX, U.K
| | - Jawad S Khalil
- Centre for Atherothrombosis and Metabolic Disease, Hull York Medical School, Hull HU6 7RX, U.K
| | - Barbara-Ann Guinn
- Department of Biomedical Sciences, University of Hull, Hull HU6 7RX, U.K
| | - Neil T Kemp
- Department of Physics and Mathematics, University of Hull, Hull HU6 7RX, U.K
| | - Francisco Rivero
- Centre for Atherothrombosis and Metabolic Disease, Hull York Medical School, Hull HU6 7RX, U.K
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9
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Abstract
Despite intense research efforts, our pharmaceutical repertoire against high-grade brain tumours has not been able to increase patient survival for a decade and life expectancy remains at less than 16 months after diagnosis, on average. Inhibitors of protein arginine methyltransferases (PRMTs) have been developed and investigated over the past 15 years and have now entered oncology clinical trials, including for brain tumours. This review collates recent advances in the understanding of the role of PRMTs and arginine methylation in brain tumours. We provide an up-to-date literature review on the mechanisms for PRMT regulation. These include endogenous modulators such as alternative splicing, miRNA, post-translational modifications and PRMT-protein interactions, and synthetic inhibitors. We discuss the relevance of PRMTs in brain tumours with a particular focus on PRMT1, -2, -5 and -8. Finally, we include a future perspective where we discuss possible routes for further research on arginine methylation and on the use of PRMT inhibitors in the context of brain tumours.
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Affiliation(s)
| | - Antonia Barry
- Department of Biomedical Sciences, University of Hull, Hull, UK
| | - John Greenman
- Department of Biomedical Sciences, University of Hull, Hull, UK
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10
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Deepak S, Sabrina Samuel M, Greenman J, Achawal S, Beltran-Alvarez P. A profile of arginine methyltransferase receptors in two immortal glioblastoma cell lines: the precursor to a novel target? Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz167.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Glioblastoma is a deadly disease with a median survival of 15 months after treatment. While maximal safe surgical resection and adjuvant chemoradiotherapy continues to be the mainstay of treatment, glioblastoma demostrates a remarkably heterogeneous molecular profile, and there is a drive to discover further chemotherapeutic targets that can effectively augment current multimodal therapy.
Introduction
Post-translational modification of proteins plays a key role in maintenance of regulatory cell networks, and protein arginine methyltransferases (PRMT) are one of the enzymes involved in symmetric and asymmetric methylation of various proteins. We aim to demonstrate the entire range of PRMT proteins expressed in two different glioblastoma cell lines (U87MG and U251) in order to elucidate a consistency in expression of these proteins across cell lines.
Methods
Cells from 2 different glioblastoma cell lines (U87MG and U251) were cultured and lysed using standard aseptic techniques. Protein profiling was done using SDS-PAGE electrophoresis with a molecular weight marker as the reference and all primary antibodies to various PRMTs (1–10) and respective secondary antibodies. Membranes were visualised with a chemiluminescent protocol. Experiments were repeated in order to reduce bias.
Conclusion
It was clearly seen that in both cell lines there is a strong tendency for PRMT5 expression and relative under-expresssion of PRMT 9/10. In addition, however, there are varying expressions of other PRMTs as well. We aim to further explore this to improve the strength of this correlation.
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Affiliation(s)
| | | | - John Greenman
- Hull York Medical School, Hull, United Kingdom
- University of Hull, Hull, United Kingdom
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11
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Onwuli DO, Samuel SF, Sfyri P, Welham K, Goddard M, Abu-Omar Y, Loubani M, Rivero F, Matsakas A, Benoit DM, Wade M, Greenman J, Beltran-Alvarez P. The inhibitory subunit of cardiac troponin (cTnI) is modified by arginine methylation in the human heart. Int J Cardiol 2019; 282:76-80. [PMID: 30772011 DOI: 10.1016/j.ijcard.2019.01.102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 01/29/2019] [Indexed: 02/01/2023]
Abstract
BACKGROUND The inhibitory subunit of cardiac troponin (cTnI) is a gold standard cardiac biomarker and also an essential protein in cardiomyocyte excitation-contraction coupling. The interactions of cTnI with other proteins are fine-tuned by post-translational modification of cTnI. Mutations in cTnI can lead to hypertrophic cardiomyopathy. METHODS AND RESULTS Here we report, for the first time, that cTnI is modified by arginine methylation in human myocardium. Using Western blot, we observed reduced levels of cTnI arginine methylation in human hypertrophic cardiomyopathy compared to dilated cardiomyopathy biopsies. Similarly, using a rat model of cardiac hypertrophy we observed reduced levels of cTnI arginine methylation compared to sham controls. Using mass spectrometry, we identified cTnI methylation sites at R74/R79 and R146/R148 in human cardiac samples. R146 and R148 lie at the boundary between the critical cTnI inhibitory and switch peptides; PRMT1 methylated an extended inhibitory peptide at R146 and R148 in vitro. Mutations at R145 that have been associated with hypertrophic cardiomyopathy hampered R146/R148 methylation by PRMT1 in vitro. H9c2 cardiac-like cells transfected with plasmids encoding for a methylation-deficient R146A/R148A cTnI protein developed cell hypertrophy, with a 32% increase in cell size after 72 h, compared to control cells. DISCUSSION Our results provide evidence for a novel and significant cTnI post-translational modification. Our work opens the door to translational investigations of cTnI arginine methylation as a biomarker of disease, which can include e.g. cardiomyopathies, myocardial infarction and heart failure, and offers a novel way to investigate the effect of cTnI mutations in the inhibitory/switch peptides.
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Affiliation(s)
- Donatus O Onwuli
- Biomedical Sciences, University of Hull, Cottingham Rd, HU6 7RX Hull, UK
| | | | - Pagona Sfyri
- Hull York Medical School, University of Hull, Cottingham Road, Hull HU6 7RX, UK
| | - Kevin Welham
- School of Chemistry, University of Hull, Cottingham Rd, HU6 7RX Hull, UK
| | - Martin Goddard
- Papworth Hospital NHS Foundation Trust, Papworth Everard, Cambridge CB23 3RE, UK
| | - Yasir Abu-Omar
- Papworth Hospital NHS Foundation Trust, Papworth Everard, Cambridge CB23 3RE, UK
| | - Mahmoud Loubani
- Hull York Medical School, University of Hull, Cottingham Road, Hull HU6 7RX, UK; Hull and East Yorkshire Hospitals NHS Trust, Castle Rd, Cottingham HU16 5JQ, UK
| | - Francisco Rivero
- Hull York Medical School, University of Hull, Cottingham Road, Hull HU6 7RX, UK
| | - Antonios Matsakas
- Hull York Medical School, University of Hull, Cottingham Road, Hull HU6 7RX, UK
| | - David M Benoit
- School of Chemistry, University of Hull, Cottingham Rd, HU6 7RX Hull, UK
| | - Mark Wade
- Biomedical Sciences, University of Hull, Cottingham Rd, HU6 7RX Hull, UK
| | - John Greenman
- Biomedical Sciences, University of Hull, Cottingham Rd, HU6 7RX Hull, UK
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Sfyri PP, Yuldasheva NY, Tzimou A, Giallourou N, Crispi V, Aburima A, Beltran-Alvarez P, Patel K, Mougios V, Swann JR, Kearney MT, Matsakas A. Attenuation of oxidative stress-induced lesions in skeletal muscle in a mouse model of obesity-independent hyperlipidaemia and atherosclerosis through the inhibition of Nox2 activity. Free Radic Biol Med 2018; 129:504-519. [PMID: 30342191 DOI: 10.1016/j.freeradbiomed.2018.10.422] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 09/12/2018] [Accepted: 10/09/2018] [Indexed: 02/08/2023]
Abstract
Obesity leading to hyperlipidaemia and atherosclerosis is recognised to induce morphological and metabolic changes in many tissues. However, hyperlipidaemia can occur in the absence of obesity. The impact of the latter scenario on skeletal muscle and liver is not understood sufficiently. In this regard, we used the Apolipoprotein E-deficient (ApoE-/-) mouse model, an established model of hyperlipidaemia and atherosclerosis, that does not become obese when subjected to a high-fat diet, to determine the impact of Western-type diet (WD) and ApoE deficiency on skeletal muscle morphological, metabolic and biochemical properties. To establish the potential of therapeutic targets, we further examined the impact of Nox2 pharmacological inhibition on skeletal muscle redox biology. We found ectopic lipid accumulation in skeletal muscle and the liver, and altered skeletal muscle morphology and intramuscular triacylglycerol fatty acid composition. WD and ApoE deficiency had a detrimental impact in muscle metabolome, followed by perturbed gene expression for fatty acid uptake and oxidation. Importantly, there was enhanced oxidative stress in the skeletal muscle and development of liver steatosis, inflammation and oxidative protein modifications. Pharmacological inhibition of Nox2 decreased reactive oxygen species production and protein oxidative modifications in the muscle of ApoE-/- mice subjected to a Western-type diet. This study provides key evidence to better understand the pathophysiology of skeletal muscle in the context of hyperlipidaemia and atherosclerosis and identifies Nox2 as a potential target for attenuating oxidative stress in skeletal muscle in a mouse model of obesity-independent hyperlipidaemia.
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Affiliation(s)
- Pagona Panagiota Sfyri
- Molecular Physiology Laboratory, Centre for Atherothrombotic & Metabolic Disease, Hull York Medical School, United Kingdom
| | - Nadira Y Yuldasheva
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, United Kingdom
| | - Anastasia Tzimou
- Laboratory of Evaluation of Human Biological Performance, School of Physical Education and Sports Science at Thessaloniki, Aristotle University of Thessaloniki, Greece
| | - Natasa Giallourou
- Department of Surgery and Cancer, Division of Computational and Systems Medicine, Imperial College London, United Kingdom
| | - Vassili Crispi
- Molecular Physiology Laboratory, Centre for Atherothrombotic & Metabolic Disease, Hull York Medical School, United Kingdom
| | - Ahmed Aburima
- Molecular Physiology Laboratory, Centre for Atherothrombotic & Metabolic Disease, Hull York Medical School, United Kingdom
| | | | - Ketan Patel
- School of Biological Sciences, University of Reading, United Kingdom
| | - Vassilis Mougios
- Laboratory of Evaluation of Human Biological Performance, School of Physical Education and Sports Science at Thessaloniki, Aristotle University of Thessaloniki, Greece
| | - Jonathan R Swann
- Department of Surgery and Cancer, Division of Computational and Systems Medicine, Imperial College London, United Kingdom
| | - Mark T Kearney
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, United Kingdom
| | - Antonios Matsakas
- Molecular Physiology Laboratory, Centre for Atherothrombotic & Metabolic Disease, Hull York Medical School, United Kingdom.
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Onwuli DO, Yañez-Bisbe L, Pinsach-Abuin ML, Tarradas A, Brugada R, Greenman J, Pagans S, Beltran-Alvarez P. Do sodium channel proteolytic fragments regulate sodium channel expression? Channels (Austin) 2017; 11:476-481. [PMID: 28718687 DOI: 10.1080/19336950.2017.1355663] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The cardiac voltage-gated sodium channel (gene: SCN5A, protein: NaV1.5) is responsible for the sodium current that initiates the cardiomyocyte action potential. Research into the mechanisms of SCN5A gene expression has gained momentum over the last few years. We have recently described the transcriptional regulation of SCN5A by GATA4 transcription factor. In this addendum to our study, we report our observations that 1) the linker between domains I and II (LDI-DII) of NaV1.5 contains a nuclear localization signal (residues 474-481) that is necessary to localize LDI-DII into the nucleus, and 2) nuclear LDI-DII activates the SCN5A promoter in gene reporter assays using cardiac-like H9c2 cells. Given that voltage-gated sodium channels are known targets of proteases such as calpain, we speculate that NaV1.5 degradation is signaled to the cell transcriptional machinery via nuclear localization of LDI-DII and subsequent stimulation of the SCN5A promoter.
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Affiliation(s)
- Donatus O Onwuli
- a Biomedical Sciences , School of Life Sciences, University of Hull , Kingston upon Hull , UK
| | - Laia Yañez-Bisbe
- b Cardiovascular Genetics Center , Institut d'Investigació Biomèdica de Girona (IDIBGI), University of Girona , Girona , Spain
| | - Mel Lina Pinsach-Abuin
- b Cardiovascular Genetics Center , Institut d'Investigació Biomèdica de Girona (IDIBGI), University of Girona , Girona , Spain.,c Medical Science Department , School of Medicine, University of Girona , Girona , Spain.,d Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV) , Instituto de Salud Carlos III , Madrid , Spain
| | - Anna Tarradas
- b Cardiovascular Genetics Center , Institut d'Investigació Biomèdica de Girona (IDIBGI), University of Girona , Girona , Spain.,c Medical Science Department , School of Medicine, University of Girona , Girona , Spain.,d Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV) , Instituto de Salud Carlos III , Madrid , Spain
| | - Ramon Brugada
- b Cardiovascular Genetics Center , Institut d'Investigació Biomèdica de Girona (IDIBGI), University of Girona , Girona , Spain.,c Medical Science Department , School of Medicine, University of Girona , Girona , Spain.,d Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV) , Instituto de Salud Carlos III , Madrid , Spain.,e Cardiology Service , Hospital Josep Trueta , Girona , Spain
| | - John Greenman
- a Biomedical Sciences , School of Life Sciences, University of Hull , Kingston upon Hull , UK
| | - Sara Pagans
- b Cardiovascular Genetics Center , Institut d'Investigació Biomèdica de Girona (IDIBGI), University of Girona , Girona , Spain.,c Medical Science Department , School of Medicine, University of Girona , Girona , Spain.,d Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV) , Instituto de Salud Carlos III , Madrid , Spain
| | - Pedro Beltran-Alvarez
- a Biomedical Sciences , School of Life Sciences, University of Hull , Kingston upon Hull , UK
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Tarradas A, Pinsach-Abuin ML, Mackintosh C, Llorà-Batlle O, Pérez-Serra A, Batlle M, Pérez-Villa F, Zimmer T, Garcia-Bassets I, Brugada R, Beltran-Alvarez P, Pagans S. Transcriptional regulation of the sodium channel gene (SCN5A) by GATA4 in human heart. J Mol Cell Cardiol 2016; 102:74-82. [PMID: 27894866 DOI: 10.1016/j.yjmcc.2016.10.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 10/07/2016] [Accepted: 10/24/2016] [Indexed: 01/12/2023]
Abstract
Aberrant expression of the sodium channel gene (SCN5A) has been proposed to disrupt cardiac action potential and cause human cardiac arrhythmias, but the mechanisms of SCN5A gene regulation and dysregulation still remain largely unexplored. To gain insight into the transcriptional regulatory networks of SCN5A, we surveyed the promoter and first intronic regions of the SCN5A gene, predicting the presence of several binding sites for GATA transcription factors (TFs). Consistent with this prediction, chromatin immunoprecipitation (ChIP) and sequential ChIP (Re-ChIP) assays show co-occupancy of cardiac GATA TFs GATA4 and GATA5 on promoter and intron 1 SCN5A regions in fresh-frozen human left ventricle samples. Gene reporter experiments show GATA4 and GATA5 synergism in the activation of the SCN5A promoter, and its dependence on predicted GATA binding sites. GATA4 and GATA6 mRNAs are robustly expressed in fresh-frozen human left ventricle samples as measured by highly sensitive droplet digital PCR (ddPCR). GATA5 mRNA is marginally but still clearly detected in the same samples. Importantly, GATA4 mRNA levels are strongly and positively correlated with SCN5A transcript levels in the human heart. Together, our findings uncover a novel mechanism of GATA TFs in the regulation of the SCN5A gene in human heart tissue. Our studies suggest that GATA5 but especially GATA4 are main contributors to SCN5A gene expression, thus providing a new paradigm of SCN5A expression regulation that may shed new light into the understanding of cardiac disease.
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Affiliation(s)
- Anna Tarradas
- Medical Sciences Department, School of Medicine, University of Girona, 17071 Girona, Spain; Institut d'Investigació Biomèdica de Girona, 17190 Salt, Spain
| | - Mel Lina Pinsach-Abuin
- Medical Sciences Department, School of Medicine, University of Girona, 17071 Girona, Spain; Institut d'Investigació Biomèdica de Girona, 17190 Salt, Spain; School of Medicine, University of California San Diego, La Jolla, CA 92093-0648, USA
| | - Carlos Mackintosh
- School of Medicine, University of California San Diego, La Jolla, CA 92093-0648, USA
| | - Oriol Llorà-Batlle
- Medical Sciences Department, School of Medicine, University of Girona, 17071 Girona, Spain; Institut d'Investigació Biomèdica de Girona, 17190 Salt, Spain
| | - Alexandra Pérez-Serra
- Medical Sciences Department, School of Medicine, University of Girona, 17071 Girona, Spain; Institut d'Investigació Biomèdica de Girona, 17190 Salt, Spain
| | - Montserrat Batlle
- Thorax Institute, Cardiology Department, Hospital Clínic, University of Barcelona, Institute of Biomedical Research August Pi i Sunyer, 08036 Barcelona, Spain
| | - Félix Pérez-Villa
- Thorax Institute, Cardiology Department, Hospital Clínic, University of Barcelona, Institute of Biomedical Research August Pi i Sunyer, 08036 Barcelona, Spain
| | - Thomas Zimmer
- Institute for Physiology II, University Hospital, 07743 Jena, Germany
| | - Ivan Garcia-Bassets
- School of Medicine, University of California San Diego, La Jolla, CA 92093-0648, USA
| | - Ramon Brugada
- Medical Sciences Department, School of Medicine, University of Girona, 17071 Girona, Spain; Institut d'Investigació Biomèdica de Girona, 17190 Salt, Spain; Hospital Universitari Dr. Josep Trueta, 17001 Girona, Spain
| | - Pedro Beltran-Alvarez
- Medical Sciences Department, School of Medicine, University of Girona, 17071 Girona, Spain; Institut d'Investigació Biomèdica de Girona, 17190 Salt, Spain; School of Biological, Biomedical, and Environmental Sciences, University of Hull, HU6 7RX, Hull, UK.
| | - Sara Pagans
- Medical Sciences Department, School of Medicine, University of Girona, 17071 Girona, Spain; Institut d'Investigació Biomèdica de Girona, 17190 Salt, Spain.
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15
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Onwuli DO, Rigau-Roca L, Cawthorne C, Beltran-Alvarez P. Mapping arginine methylation in the human body and cardiac disease. Proteomics Clin Appl 2016; 11. [PMID: 27600370 DOI: 10.1002/prca.201600106] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 08/20/2016] [Accepted: 09/02/2016] [Indexed: 01/11/2023]
Abstract
PURPOSE Arginine methylation (ArgMe) is one of the most ubiquitous PTMs, and hundreds of proteins undergo ArgMe in, for example, brain. However, the scope of ArgMe in many tissues, including the heart, is currently underexplored. Here, we aimed to (i) identify proteins undergoing ArgMe in human organs, and (ii) expose the relevance of ArgMe in cardiac disease. EXPERIMENTAL DESIGN The publicly available proteomic data is used to search for ArgMe in 13 human tissues. To induce H9c2 cardiac-like cell hypertrophy glucose is used. RESULTS The results show that ArgMe is mainly tissue-specific; nevertheless, the authors suggest an embryonic origin of core ArgMe events. In the heart, 103 mostly novel ArgMe sites in 58 nonhistone proteins are found. The authors provide compelling evidence that cardiac protein ArgMe is relevant to cardiomyocyte ontology, and important for proper cardiac function. This is highlighted by the fact that genetic mutations affecting methylated arginine positions are often associated with cardiac disease, including hypertrophic cardiomyopathy. The pilot experimental data suggesting significant changes in ArgMe profiles of H9c2 cells upon induction of cell hypertrophy using glucose is provided. CONCLUSIONS AND CLINICAL RELEVANCE The work calls for in-depth investigation of ArgMe in normal and diseased tissues using methods including clinical proteomics.
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16
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Onwuli DO, Beltran-Alvarez P. An update on transcriptional and post-translational regulation of brain voltage-gated sodium channels. Amino Acids 2015; 48:641-651. [PMID: 26503606 PMCID: PMC4752963 DOI: 10.1007/s00726-015-2122-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 10/16/2015] [Indexed: 11/29/2022]
Abstract
Voltage-gated sodium channels are essential proteins in brain physiology, as they generate the sodium currents that initiate neuronal action potentials. Voltage-gated sodium channels expression, localisation and function are regulated by a range of transcriptional and post-translational mechanisms. Here, we review our understanding of regulation of brain voltage-gated sodium channels, in particular SCN1A (NaV1.1), SCN2A (NaV1.2), SCN3A (NaV1.3) and SCN8A (NaV1.6), by transcription factors, by alternative splicing, and by post-translational modifications. Our focus is strongly centred on recent research lines, and newly generated knowledge.
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Affiliation(s)
- Donatus O Onwuli
- School of Biological, Biomedical and Environmental Sciences, University of Hull, Hardy Building Cottingham Road, Hull, HU6 7RX, UK
| | - Pedro Beltran-Alvarez
- School of Biological, Biomedical and Environmental Sciences, University of Hull, Hardy Building Cottingham Road, Hull, HU6 7RX, UK.
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17
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Beltran-Alvarez P, Feixas F, Osuna S, Díaz-Hernández R, Brugada R, Pagans S. Interplay between R513 methylation and S516 phosphorylation of the cardiac voltage-gated sodium channel. Amino Acids 2014; 47:429-34. [PMID: 25501501 DOI: 10.1007/s00726-014-1890-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Accepted: 12/04/2014] [Indexed: 10/24/2022]
Abstract
Arginine methylation is a novel post-translational modification within the voltage-gated ion channel superfamily, including the cardiac sodium channel, NaV1.5. We show that NaV1.5 R513 methylation decreases S516 phosphorylation rate by 4 orders of magnitude, the first evidence of protein kinase A inhibition by arginine methylation. Reciprocally, S516 phosphorylation blocks R513 methylation. NaV1.5 p.G514C, associated to cardiac conduction disease, abrogates R513 methylation, while leaving S516 phosphorylation rate unchanged. This is the first report of methylation-phosphorylation cross-talk of a cardiac ion channel.
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Affiliation(s)
- Pedro Beltran-Alvarez
- Cardiovascular Genetics Center, Institut d'Investigació Biomèdica de Girona Dr. Josep Trueta, University of Girona, 17003, Girona, Spain,
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18
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Beltran-Alvarez P, Tarradas A, Chiva C, Pérez-Serra A, Batlle M, Pérez-Villa F, Schulte U, Sabidó E, Brugada R, Pagans S. Identification of N-terminal protein acetylation and arginine methylation of the voltage-gated sodium channel in end-stage heart failure human heart. J Mol Cell Cardiol 2014; 76:126-9. [PMID: 25172307 DOI: 10.1016/j.yjmcc.2014.08.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 07/25/2014] [Accepted: 08/15/2014] [Indexed: 11/30/2022]
Abstract
The α subunit of the cardiac voltage-gated sodium channel, NaV1.5, provides the rapid sodium inward current that initiates cardiomyocyte action potentials. Here, we analyzed for the first time the post-translational modifications of NaV1.5 purified from end-stage heart failure human cardiac tissue. We identified R526 methylation as the major post-translational modification of any NaV1.5 arginine or lysine residue. Unexpectedly, we found that the N terminus of NaV1.5 was: 1) devoid of the initiation methionine, and 2) acetylated at the resulting initial alanine residue. This is the first evidence for N-terminal acetylation in any member of the voltage-gated ion channel superfamily. Our results open the door to explore NaV1.5 N-terminal acetylation and arginine methylation levels as drivers or markers of end-stage heart failure.
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Affiliation(s)
- Pedro Beltran-Alvarez
- Cardiovascular Genetics Center, Institut d'Investigació Biomèdica de Girona, 17003 Girona, Spain.
| | - Anna Tarradas
- Cardiovascular Genetics Center, Institut d'Investigació Biomèdica de Girona, 17003 Girona, Spain; Department of Medical Sciences, School of Medicine, University of Girona, 17003 Girona, Spain
| | - Cristina Chiva
- Proteomics Unit, Centre for Genomic Regulation (CRG), 08003 Barcelona, Spain; Universitat Pompeu Fabra (UPF), 08003 Barcelona, Spain
| | - Alexandra Pérez-Serra
- Cardiovascular Genetics Center, Institut d'Investigació Biomèdica de Girona, 17003 Girona, Spain; Department of Medical Sciences, School of Medicine, University of Girona, 17003 Girona, Spain
| | - Montserrat Batlle
- Thorax Institute, Cardiology Department, Hospital Clínic, University of Barcelona, Institute of Biomedical Research August Pi i Sunyer, 08036 Barcelona, Spain
| | - Félix Pérez-Villa
- Thorax Institute, Cardiology Department, Hospital Clínic, University of Barcelona, Institute of Biomedical Research August Pi i Sunyer, 08036 Barcelona, Spain
| | - Uwe Schulte
- Logopharm GmbH, 79232 March-Buchheim, Germany
| | - Eduard Sabidó
- Proteomics Unit, Centre for Genomic Regulation (CRG), 08003 Barcelona, Spain; Universitat Pompeu Fabra (UPF), 08003 Barcelona, Spain
| | - Ramon Brugada
- Cardiovascular Genetics Center, Institut d'Investigació Biomèdica de Girona, 17003 Girona, Spain; Department of Medical Sciences, School of Medicine, University of Girona, 17003 Girona, Spain.
| | - Sara Pagans
- Cardiovascular Genetics Center, Institut d'Investigació Biomèdica de Girona, 17003 Girona, Spain; Department of Medical Sciences, School of Medicine, University of Girona, 17003 Girona, Spain.
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Riuro H, Campuzano O, Beltran-Alvarez P, Arbelo E, Iglesias A, Brugada J, Perez GJ, Scornik F, Brugada R. P111SCN1Bb: a new susceptibly gene underlying LQT syndrome. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu082.52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tarradas A, Pinsach-Abuin M, Llora O, Beltran-Alvarez P, Brugada R, Pagans S. P579Novel insights into the regulatory mechanisms of scn5a expression. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu098.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Alcalde M, Campuzano O, Beltran-Alvarez P, Pagans S, Verges M, Brugada R. P389Role of truncated plakophilin-2 in arrhythmogenic right ventricular cardiomyopathy. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu091.71] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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22
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Riuró H, Beltran-Alvarez P, Tarradas A, Selga E, Campuzano O, Vergés M, Pagans S, Iglesias A, Brugada J, Brugada P, Vázquez FM, Pérez GJ, Scornik FS, Brugada R. A missense mutation in the sodium channel β2 subunit reveals SCN2B as a new candidate gene for Brugada syndrome. Hum Mutat 2013; 34:961-6. [PMID: 23559163 DOI: 10.1002/humu.22328] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Accepted: 03/21/2013] [Indexed: 11/09/2022]
Abstract
Brugada Syndrome (BrS) is a familial disease associated with sudden cardiac death. A 20%-25% of BrS patients carry genetic defects that cause loss-of-function of the voltage-gated cardiac sodium channel. Thus, 70%-75% of patients remain without a genetic diagnosis. In this work, we identified a novel missense mutation (p.Asp211Gly) in the sodium β2 subunit encoded by SCN2B, in a woman diagnosed with BrS. We studied the sodium current (INa ) from cells coexpressing Nav 1.5 and wild-type (β2WT) or mutant (β2D211G) β2 subunits. Our electrophysiological analysis showed a 39.4% reduction in INa density when Nav 1.5 was coexpressed with the β2D211G. Single channel analysis showed that the mutation did not affect the Nav 1.5 unitary channel conductance. Instead, protein membrane detection experiments suggested that β2D211G decreases Nav 1.5 cell surface expression. The effect of the mutant β2 subunit on the INa strongly suggests that SCN2B is a new candidate gene associated with BrS.
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Affiliation(s)
- Helena Riuró
- Cardiovascular Genetics Center, Institut d'Investigació Biomèdica de Girona, Girona, Spain
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Abstract
The α subunit of the cardiac sodium channel (Na(v)1.5) is an essential protein in the initial depolarization phase of the cardiomyocyte action potential. Post-translational modifications such as phosphorylation are known to regulate Na(v)1.5 function. Here, we used a proteomic approach for the study of the post-translational modifications of Na(v)1.5 using tsA201 cells as a model system. We generated a stable cell line expressing Na(v)1.5, purified the sodium channel, and analyzed Na(v)1.5 by MALDI-TOF and LC-MS/MS. We report the identification of arginine methylation as a novel post-translational modification of Na(v)1.5. R513, R526, and R680, located in the linker between domains I and II in Na(v)1.5, were found in mono- or dimethylated states. The functional relevance of arginine methylation in Na(v)1.5 is underscored by the fact that R526H and R680H are known Na(v)1.5 mutations causing Brugada and long QT type 3 syndromes, respectively. Our work describes for the first time arginine methylation in the voltage-gated ion channel superfamily.
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Affiliation(s)
- Pedro Beltran-Alvarez
- Cardiovascular Genetics Center, Institut d'Investigació Biomèdica de Girona, Hospital Dr. Josep Trueta, Girona, Spain
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Kühner S, van Noort V, Betts MJ, Leo-Macias A, Batisse C, Rode M, Yamada T, Maier T, Bader S, Beltran-Alvarez P, Castaño-Diez D, Chen WH, Devos D, Güell M, Norambuena T, Racke I, Rybin V, Schmidt A, Yus E, Aebersold R, Herrmann R, Böttcher B, Frangakis AS, Russell RB, Serrano L, Bork P, Gavin AC. Proteome organization in a genome-reduced bacterium. Science 2009; 326:1235-40. [PMID: 19965468 DOI: 10.1126/science.1176343] [Citation(s) in RCA: 354] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The genome of Mycoplasma pneumoniae is among the smallest found in self-replicating organisms. To study the basic principles of bacterial proteome organization, we used tandem affinity purification-mass spectrometry (TAP-MS) in a proteome-wide screen. The analysis revealed 62 homomultimeric and 116 heteromultimeric soluble protein complexes, of which the majority are novel. About a third of the heteromultimeric complexes show higher levels of proteome organization, including assembly into larger, multiprotein complex entities, suggesting sequential steps in biological processes, and extensive sharing of components, implying protein multifunctionality. Incorporation of structural models for 484 proteins, single-particle electron microscopy, and cellular electron tomograms provided supporting structural details for this proteome organization. The data set provides a blueprint of the minimal cellular machinery required for life.
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Affiliation(s)
- Sebastian Kühner
- European Molecular Biology Laboratory, Meyerhofstrasse 1, D-69117 Heidelberg, Germany
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Beltran-Alvarez P, Arthur CJ, Cox RJ, Crosby J, Crump MP, Simpson TJ. Preliminary kinetic analysis of acyl carrier protein–ketoacylsynthase interactions in the actinorhodin minimal polyketide synthase. Mol BioSyst 2009; 5:511-8. [DOI: 10.1039/b821844g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Beltran-Alvarez P, Cox RJ, Crosby J, Simpson TJ. Dissecting the component reactions catalyzed by the actinorhodin minimal polyketide synthase. Biochemistry 2007; 46:14672-81. [PMID: 18034463 DOI: 10.1021/bi701784c] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The actinorhodin (act) minimal polyketide synthase (PKS) from Streptomyces coelicolor consists of three proteins: an acyl carrier protein (ACP) and two beta-ketoacyl ACP synthase components known as KSalpha and KSbeta. The act minimal PKS catalyzes at least 18 separate reactions which can be divided into loading, initiation, extension, and cyclization and release phases. Two quantitative kinetic assays were developed and used to measure individual rate and Michaelis constants for loading, initiation and extension steps. In the minimal PKS, the reaction between malonyl CoA and ACP to form malonyl ACP (loading) is the rate-limiting step (kcat = 0.49 min-1, KM = 207 microM). This reaction increases 5-fold in rate in the presence of KSalphaKSbeta (kcat = 2.3 min-1, KM = 215 microM). In the presence of S. coelicolor malonyl CoA:ACP transacylase (MCAT), the rate of loading increases and the kinetic parameters of malonyl-ACP as a substrate of KSalphaKSbeta can be measured (kcat = 20.6 min-1, KM = 2.4 microM). Under these conditions, it appears that decarboxylation of malonyl-ACP to form acetyl-ACP (initiation) is the rate-limiting step. When an excess of acetyl ACP is supplied, either chain extension, cyclization, or release steps become rate limiting (k approximately 60 min-1). No ACP-bound intermediates could be observed, suggesting that partially or fully extended chains do not accumulate because chain extension is rate limiting under these conditions and that cyclization and release are fast. apo-ACP acts as a mixed inhibitor of malonyl ACP binding to KSalpha/KSbeta (Kic = 50 microM, Kiu = 137 microM), but apo-ACP does not appear to inhibit MCAT.
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Ma Y, Smith LH, Cox RJ, Beltran-Alvarez P, Arthur CJ, Simpson F R S TJ. Catalytic relationships between type I and type II iterative polyketide synthases: The Aspergillus parasiticus norsolorinic acid synthase. Chembiochem 2007; 7:1951-8. [PMID: 17086560 DOI: 10.1002/cbic.200600341] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Norsolorinic acid synthase (NSAS) is a type I iterative polyketide synthase that occurs in the filamentous fungus Aspergillus parasiticus. PCR was used to clone fragments of NSAS corresponding to the acyl carrier protein (ACP), acyl transferase (AT) and beta-ketoacyl-ACP synthase (KS) catalytic domains. Expression of these gene fragments in Escherichia coli led to the production of soluble ACP and AT proteins. Coexpression of ACP with E. coli holo-ACP synthase (ACPS) let to production of NSAS holo-ACP, which could also be formed in vitro by using Streptomyces coelicolor ACPS. Analysis by mass spectrometry showed that, as with other type I carrier proteins, self-malonylation is not observed in the presence of malonyl CoA alone. However, the NSAS holo-ACP serves as substrate for S. coelicolor MCAT, S. coelicolor actinorhodin holo-ACP and NSAS AT domain-catalysed malonate transfer from malonyl CoA. The AT domain could transfer malonate from malonyl CoA to NSAS holo-ACP, but not hexanoate or acetate from either the cognate CoA or FAS ACP species to NSAS holo-ACP. The NSAS holo-ACP was also active in actinorhodin minimal PKS assays, but only in the presence of exogenous malonyl transferases.
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Affiliation(s)
- Yue Ma
- School of Chemistry, University of Bristol, Cantock's Close, Clifton, Bristol, BS8 1TS, UK
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