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Pasquero S, Gugliesi F, Biolatti M, Dell’Oste V, Albano C, Bajetto G, Griffante G, Trifirò L, Brugo B, Raviola S, Lacarbonara D, Yang Q, Sudeshna S, Barasa L, Haniff H, Thompson PR, Landolfo S, De Andrea M. Citrullination profile analysis reveals peptidylarginine deaminase 3 as an HSV-1 target to dampen the activity of candidate antiviral restriction factors. PLoS Pathog 2023; 19:e1011849. [PMID: 38055760 PMCID: PMC10727434 DOI: 10.1371/journal.ppat.1011849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 12/18/2023] [Accepted: 11/20/2023] [Indexed: 12/08/2023] Open
Abstract
Herpes simplex virus 1 (HSV-1) is a neurotropic virus that remains latent in neuronal cell bodies but reactivates throughout an individual's life, causing severe adverse reactions, such as herpes simplex encephalitis (HSE). Recently, it has also been implicated in the etiology of Alzheimer's disease (AD). The absence of an effective vaccine and the emergence of numerous drug-resistant variants have called for the development of new antiviral agents that can tackle HSV-1 infection. Host-targeting antivirals (HTAs) have recently emerged as promising antiviral compounds that act on host-cell factors essential for viral replication. Here we show that a new class of HTAs targeting peptidylarginine deiminases (PADs), a family of calcium-dependent enzymes catalyzing protein citrullination, exhibits a marked inhibitory activity against HSV-1. Furthermore, we show that HSV-1 infection leads to enhanced protein citrullination through transcriptional activation of three PAD isoforms: PAD2, PAD3, and PAD4. Interestingly, PAD3-depletion by specific drugs or siRNAs dramatically inhibits HSV-1 replication. Finally, an analysis of the citrullinome reveals significant changes in the deimination levels of both cellular and viral proteins, with the interferon (IFN)-inducible proteins IFIT1 and IFIT2 being among the most heavily deiminated ones. As genetic depletion of IFIT1 and IFIT2 strongly enhances HSV-1 growth, we propose that viral-induced citrullination of IFIT1 and 2 is a highly efficient HSV-1 evasion mechanism from host antiviral resistance. Overall, our findings point to a crucial role of citrullination in subverting cellular responses to viral infection and demonstrate that PAD inhibitors efficiently suppress HSV-1 infection in vitro, which may provide the rationale for their repurposing as HSV-1 antiviral drugs.
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Affiliation(s)
- Selina Pasquero
- Department of Public Health and Pediatric Sciences, University of Turin – Medical School, Turin, Italy
| | - Francesca Gugliesi
- Department of Public Health and Pediatric Sciences, University of Turin – Medical School, Turin, Italy
| | - Matteo Biolatti
- Department of Public Health and Pediatric Sciences, University of Turin – Medical School, Turin, Italy
| | - Valentina Dell’Oste
- Department of Public Health and Pediatric Sciences, University of Turin – Medical School, Turin, Italy
| | - Camilla Albano
- Department of Public Health and Pediatric Sciences, University of Turin – Medical School, Turin, Italy
| | - Greta Bajetto
- Department of Public Health and Pediatric Sciences, University of Turin – Medical School, Turin, Italy
- CAAD Center for Translational Research on Autoimmune and Allergic Disease, University of Piemonte Orientale, Novara Medical School, Novara, Italy
| | - Gloria Griffante
- Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
| | - Linda Trifirò
- Department of Public Health and Pediatric Sciences, University of Turin – Medical School, Turin, Italy
| | - Bianca Brugo
- Department of Public Health and Pediatric Sciences, University of Turin – Medical School, Turin, Italy
| | - Stefano Raviola
- CAAD Center for Translational Research on Autoimmune and Allergic Disease, University of Piemonte Orientale, Novara Medical School, Novara, Italy
- Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
| | - Davide Lacarbonara
- CAAD Center for Translational Research on Autoimmune and Allergic Disease, University of Piemonte Orientale, Novara Medical School, Novara, Italy
- Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
| | - Qiao Yang
- Department of Public Health and Pediatric Sciences, University of Turin – Medical School, Turin, Italy
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City, P.R. China
| | - Sen Sudeshna
- Department of Biochemistry and Molecular Pharmacology, UMass Medical School, Worcester, Massachusetts, United States of America
| | - Leonard Barasa
- Department of Biochemistry and Molecular Pharmacology, UMass Medical School, Worcester, Massachusetts, United States of America
| | - Hafeez Haniff
- Department of Biochemistry and Molecular Pharmacology, UMass Medical School, Worcester, Massachusetts, United States of America
| | - Paul R. Thompson
- Department of Biochemistry and Molecular Pharmacology, UMass Medical School, Worcester, Massachusetts, United States of America
| | - Santo Landolfo
- Department of Public Health and Pediatric Sciences, University of Turin – Medical School, Turin, Italy
| | - Marco De Andrea
- Department of Public Health and Pediatric Sciences, University of Turin – Medical School, Turin, Italy
- CAAD Center for Translational Research on Autoimmune and Allergic Disease, University of Piemonte Orientale, Novara Medical School, Novara, Italy
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Geng H, An Q, Zhang Y, Huang Y, Wang L, Wang Y. Role of Peptidylarginine Deiminase 4 in Central Nervous System Diseases. Mol Neurobiol 2023; 60:6748-6756. [PMID: 37480499 DOI: 10.1007/s12035-023-03489-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 07/05/2023] [Indexed: 07/24/2023]
Abstract
The deimination or citrullination of arginine residues in the polypeptide chain by peptidylarginine deiminase 4 alters the charge state of the polypeptide chain and affects the function of proteins. It is one of the main ways of protein post-translational modifications to regulate its function. Peptidylarginine deiminase 4 is widely expressed in multiple tissues and organs of the body, especially the central nervous system, and regulates the normal development of organisms. The abnormal expression and activation of peptidylarginine deiminase 4 is an important pathological mechanism for the occurrence and development of central nervous system diseases such as multiple sclerosis, Alzheimer's disease, cerebral ischemia reperfusion injury, and glioblastoma.
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Affiliation(s)
- Huixia Geng
- Institute of Chronic Disease Risks Assessment, School of Nursing and Health Sciences, Henan University, Henan Province, Kaifeng, 475004, People's Republic of China
| | - Qihang An
- Institute of Chronic Disease Risks Assessment, School of Nursing and Health Sciences, Henan University, Henan Province, Kaifeng, 475004, People's Republic of China
| | - Yanshuo Zhang
- School of Life Science, Henan University, Henan Province, Kaifeng, 475004, People's Republic of China
| | - Yunhang Huang
- School of Life Science, Henan University, Henan Province, Kaifeng, 475004, People's Republic of China
| | - Lai Wang
- Institute of Chronic Disease Risks Assessment, School of Nursing and Health Sciences, Henan University, Henan Province, Kaifeng, 475004, People's Republic of China.
- School of Life Science, Henan University, Henan Province, Kaifeng, 475004, People's Republic of China.
| | - Yanming Wang
- School of Life Science, Henan University, Henan Province, Kaifeng, 475004, People's Republic of China.
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3
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Rossetti DV, Muntiu A, Massimi L, Tamburrini G, Desiderio C. Citrullination Post-Translational Modification: State of the Art of Brain Tumor Investigations and Future Perspectives. Diagnostics (Basel) 2023; 13:2872. [PMID: 37761239 PMCID: PMC10529966 DOI: 10.3390/diagnostics13182872] [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: 07/03/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 09/29/2023] Open
Abstract
The present review aims to describe the state of the art of research studies investigating the citrullination post-translational modification in adult and pediatric brain tumors. After an introduction to the deimination reaction and its occurrence in proteins and polypeptide chains, the role of the citrullination post-translational modification in physiological as well as pathological states, including cancer, is summarized, and the recent literature and review papers on the topic are examined. A separate section deals with the specific focus of investigation of the citrullination post-translational modification in relation to brain tumors, examining the state of the art of the literature that mainly concerns adult and pediatric glioblastoma and posterior fossa pediatric tumors. We examined the literature on this emerging field of research, and we apologize in advance for any possible omission. Although only a few studies inspecting citrullination in brain tumors are currently available, the results interestingly highlighted different profiles of the citrullinome associated with different histotypes. The data outlined the importance of this post-translational modification in modulating cancer invasion and chemoresistance, influencing key factors involved in apoptosis, cancer cell communication through extracellular vesicle release, autophagy, and gene expression processes, which suggests the prospect of taking citrullination as a target of cancer treatment or as a source of potential diagnostic and prognostic biomarkers for potential clinical applications in the future.
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Affiliation(s)
- Diana Valeria Rossetti
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, Consiglio Nazionale delle Ricerche, 00168 Rome, Italy;
| | - Alexandra Muntiu
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, 00168 Rome, Italy;
| | - Luca Massimi
- UOC Neurochirurgia Infantile, Dipartimento di Scienze dell’Invecchiamento, Neurologiche, Ortopediche e della Testa-Collo, Fondazione Policlinico Universitario A. Gemelli—IRCCS, Università Cattolica del Sacro Cuore, 00168 Roma, Italy; (L.M.); (G.T.)
| | - Gianpiero Tamburrini
- UOC Neurochirurgia Infantile, Dipartimento di Scienze dell’Invecchiamento, Neurologiche, Ortopediche e della Testa-Collo, Fondazione Policlinico Universitario A. Gemelli—IRCCS, Università Cattolica del Sacro Cuore, 00168 Roma, Italy; (L.M.); (G.T.)
| | - Claudia Desiderio
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, Consiglio Nazionale delle Ricerche, 00168 Rome, Italy;
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4
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Citrullination: A modification important in the pathogenesis of autoimmune diseases. Clin Immunol 2022; 245:109134. [DOI: 10.1016/j.clim.2022.109134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/13/2022] [Accepted: 09/19/2022] [Indexed: 11/18/2022]
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Ghasempour G, Zamani-Garmsiri F, Shojaei S, Rahmani-Fard S, Bagherieh M, Rashno S, Najafi M. Vitamin D3 and estradiol alter PAD2 expression and activity levels in C6 glioma cells. Mult Scler Relat Disord 2021; 56:103221. [PMID: 34461573 DOI: 10.1016/j.msard.2021.103221] [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: 12/03/2020] [Revised: 08/05/2021] [Accepted: 08/20/2021] [Indexed: 11/16/2022]
Abstract
Multiple Sclerosis (MS) is known as a chronic demyelinating disease with multifactorial etiology. It is suggested that the deimination of myelin basic proteins (MBPs) by peptidyl arginine deiminase 2 (PAD2) may increase citrulline residues resulting in the reduction of myelin sheath density and the progression of multiple sclerosis. The aim of this study was to investigate the effects of vitamin D (25-hydroxy cholecalciferol (D3)) and estradiol on PAD2 gene expression level and its catalytic activity in rat C6 glioma cells. C6 glioma cells were cultured in DMEM medium and were treated with vitamin D (10 and 100 ng/ml) and estradiol (10 and 100 µM) based on the cellular viability. Then, the PAD2 gene expression and catalytic activity were evaluated using real-time qRT-PCR and spectrophotometry techniques, respectively. The PAD2 gene expression level and its catalytic activity increased significantly in estradiol-treated cells (P = 0.0435 and P = 0.0015, respectively). Conversely, vitamin D downregulated significantly the PAD2 gene expression level (P < 0.015) and its activity (P < 0.017). The study results suggested that estradiol conversely with vitamin D increases the activity of the PAD2 enzyme so that it might develop multiple sclerosis, especially in women.
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Affiliation(s)
- Ghasem Ghasempour
- Department of Clinical Biochemistry, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran; Department of Clinical Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Fahimeh Zamani-Garmsiri
- Department of Clinical Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahla Shojaei
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Human Anatomy and Cell Science, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
| | - Soheil Rahmani-Fard
- Antimicrobial Resistance Research Center, Institute of Immunology and Infectious Disease, Iran University of Medical Sciences, Tehran, Iran
| | - Molood Bagherieh
- Department of Clinical Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Sajjad Rashno
- Department of Clinical Biochemistry, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Najafi
- Department of Clinical Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
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Qin W, Zhou A, Zuo X, Jia L, Li F, Wang Q, Li Y, Wei Y, Jin H, Cruchaga C, Benitez BA, Jia J. Exome sequencing revealed PDE11A as a novel candidate gene for early-onset Alzheimer's disease. Hum Mol Genet 2021; 30:811-822. [PMID: 33835157 PMCID: PMC8161517 DOI: 10.1093/hmg/ddab090] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 11/14/2022] Open
Abstract
To identify novel risk genes and better understand the molecular pathway underlying Alzheimer's disease (AD), whole-exome sequencing was performed in 215 early-onset AD (EOAD) patients and 255 unrelated healthy controls of Han Chinese ethnicity. Subsequent validation, computational annotation and in vitro functional studies were performed to evaluate the role of candidate variants in EOAD. We identified two rare missense variants in the phosphodiesterase 11A (PDE11A) gene in individuals with EOAD. Both variants are located in evolutionarily highly conserved amino acids, are predicted to alter the protein conformation and are classified as pathogenic. Furthermore, we found significantly decreased protein levels of PDE11A in brain samples of AD patients. Expression of PDE11A variants and knockdown experiments with specific short hairpin RNA (shRNA) for PDE11A both resulted in an increase of AD-associated Tau hyperphosphorylation at multiple epitopes in vitro. PDE11A variants or PDE11A shRNA also caused increased cyclic adenosine monophosphate (cAMP) levels, protein kinase A (PKA) activation and cAMP response element-binding protein phosphorylation. In addition, pretreatment with a PKA inhibitor (H89) suppressed PDE11A variant-induced Tau phosphorylation formation. This study offers insight into the involvement of Tau phosphorylation via the cAMP/PKA pathway in EOAD pathogenesis and provides a potential new target for intervention.
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Affiliation(s)
- Wei Qin
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing 100053, China
| | - Aihong Zhou
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing 100053, China
| | - Xiumei Zuo
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing 100053, China
| | - Longfei Jia
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing 100053, China
| | - Fangyu Li
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing 100053, China
| | - Qi Wang
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing 100053, China
| | - Ying Li
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing 100053, China
| | - Yiping Wei
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing 100053, China
| | - Hongmei Jin
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing 100053, China
| | - Carlos Cruchaga
- Department of Psychiatry, Washington University, St. Louis, MO 63110, USA
- NeuroGenomics and Informatics Center, Washington University, St. Louis, MO 63110, USA
- Department of Genetics, Washington University, St. Louis, MO 63110, USA
| | - Bruno A Benitez
- Department of Psychiatry, Washington University, St. Louis, MO 63110, USA
- NeuroGenomics and Informatics Center, Washington University, St. Louis, MO 63110, USA
| | - Jianping Jia
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing 100053, China
- Beijing Key Laboratory of Geriatric Cognitive Disorders, Capital Medical University, Beijing 10053, China
- Clinical Center for Neurodegenerative Disease and Memory Impairment, Capital Medical University, Beijing 10053, China
- Center of Alzheimer’s Disease, Beijing Institute of Brain Disorders, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing 10053, China
- To whom correspondence should be addressed at: Innovation Center for Neurological Disorders, Xuanwu Hospital, Capital Medical University, 45 Changchun Street, Beijing 100053, P.R. China. Tel: 0086 10 83199449; Fax: 0086 10 83128678; ,
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Zhang Y, Yang Y, Hu X, Wang Z, Li L, Chen P. PADs in cancer: Current and future. Biochim Biophys Acta Rev Cancer 2020; 1875:188492. [PMID: 33321174 DOI: 10.1016/j.bbcan.2020.188492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 12/08/2020] [Accepted: 12/08/2020] [Indexed: 02/06/2023]
Abstract
Protein arginine deiminases (PADs), is a group of calcium-dependent enzymes, which play crucial roles in citrullination, and can catalyze arginine residues into citrulline. This chemical reaction induces citrullinated proteins formation with altered structure and function, leading to numerous pathological diseases, including inflammation and autoimmune diseases. To date, multiple studies have provided solid evidence that PADs are implicated in cancer progression. Nevertheless, the findings on PADs functions in tumors are too complex to understand due to its involvements in variable signaling pathways. The increasing interest in PADs has heightened the need for a comprehensive description for its role in cancer. The present study aims to identify the gaps in present knowledge, including its structures, biological substrates and tissue distribution. Since several irreversible inhibitors for PADs with good potency and selectivity have been explored, the mechanisms on the dysregulation in tumors remain poorly understood. The present study discusses the relationship between PADs and tumor apoptosis, EMT formation and metastasis as well as the implication of neutrophil extracellular traps (NETs) in tumorigenesis. In addition, the potential uses of citrullinated antigens for immunotherapy were proposed.
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Affiliation(s)
- Yu Zhang
- Department of Pathology and Pathophysiology, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, PR China
| | - Yiqiong Yang
- Department of Pathology and Pathophysiology, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, PR China
| | - Xiuxiu Hu
- Department of Pathology and Pathophysiology, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, PR China
| | - Zhi Wang
- Department of Pathology and Pathophysiology, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, PR China
| | - Li Li
- Department of Pathology and Pathophysiology, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, PR China
| | - Pingsheng Chen
- Department of Pathology and Pathophysiology, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, PR China.
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Uysal-Onganer P, MacLatchy A, Mahmoud R, Kraev I, Thompson PR, Inal JM, Lange S. Peptidylarginine Deiminase Isozyme-Specific PAD2, PAD3 and PAD4 Inhibitors Differentially Modulate Extracellular Vesicle Signatures and Cell Invasion in Two Glioblastoma Multiforme Cell Lines. Int J Mol Sci 2020; 21:ijms21041495. [PMID: 32098295 PMCID: PMC7073130 DOI: 10.3390/ijms21041495] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/13/2020] [Accepted: 02/20/2020] [Indexed: 12/16/2022] Open
Abstract
Glioblastoma multiforme (GBM) is an aggressive adult brain tumour with poor prognosis. Roles for peptidylarginine deiminases (PADs) in GBM have recently been highlighted. Here, two GBM cell lines were treated with PAD2, PAD3 and PAD4 isozyme-specific inhibitors. Effects were assessed on extracellular vesicle (EV) signatures, including EV-microRNA cargo (miR21, miR126 and miR210), and on changes in cellular protein expression relevant for mitochondrial housekeeping (prohibitin (PHB)) and cancer progression (stromal interaction molecule 1 (STIM-1) and moesin), as well as assessing cell invasion. Overall, GBM cell-line specific differences for the three PAD isozyme-specific inhibitors were observed on modulation of EV-signatures, PHB, STIM-1 and moesin protein levels, as well as on cell invasion. The PAD3 inhibitor was most effective in modulating EVs to anti-oncogenic signatures (reduced miR21 and miR210, and elevated miR126), to reduce cell invasion and to modulate protein expression of pro-GBM proteins in LN229 cells, while the PAD2 and PAD4 inhibitors were more effective in LN18 cells. Furthermore, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways for deiminated proteins relating to cancer, metabolism and inflammation differed between the two GBM cell lines. Our findings highlight roles for the different PAD isozymes in the heterogeneity of GBM tumours and the potential for tailored PAD-isozyme specific treatment.
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Affiliation(s)
- Pinar Uysal-Onganer
- Cancer Research Group, School of Life Sciences, University of Westminster, London W1W 6UW, UK;
| | - Amy MacLatchy
- School of Life Sciences, University of Westminster, London W1W 6UW, UK; (A.M.); (R.M.)
| | - Rayan Mahmoud
- School of Life Sciences, University of Westminster, London W1W 6UW, UK; (A.M.); (R.M.)
| | - Igor Kraev
- Electron Microscopy Suite, Faculty of Science, Technology, Engineering and Mathematics, Open University, Milton Keynes MK7 6AA, UK;
| | - Paul R. Thompson
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01655, USA;
| | - Jameel M. Inal
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield AL10 9AB, UK;
- School of Human Sciences, London Metropolitan University, London N7 8DB, UK
| | - Sigrun Lange
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London W1W 6UW, UK
- Correspondence: ; Tel.: +44-(0)207-911-5000 (ext. 64832)
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An Overview of the Intrinsic Role of Citrullination in Autoimmune Disorders. J Immunol Res 2019; 2019:7592851. [PMID: 31886309 PMCID: PMC6899306 DOI: 10.1155/2019/7592851] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 04/03/2019] [Accepted: 09/28/2019] [Indexed: 02/07/2023] Open
Abstract
A protein undergoes many types of posttranslation modification. Citrullination is one of these modifications, where an arginine amino acid is converted to a citrulline amino acid. This process depends on catalytic enzymes such as peptidylarginine deiminase enzymes (PADs). This modification leads to a charge shift, which affects the protein structure, protein-protein interactions, and hydrogen bond formation, and it may cause protein denaturation. The irreversible citrullination reaction is not limited to a specific protein, cell, or tissue. It can target a wide range of proteins in the cell membrane, cytoplasm, nucleus, and mitochondria. Citrullination is a normal reaction during cell death. Apoptosis is normally accompanied with a clearance process via scavenger cells. A defect in the clearance system either in terms of efficiency or capacity may occur due to massive cell death, which may result in the accumulation and leakage of PAD enzymes and the citrullinated peptide from the necrotized cell which could be recognized by the immune system, where the immunological tolerance will be avoided and the autoimmune disorders will be subsequently triggered. The induction of autoimmune responses, autoantibody production, and cytokines involved in the major autoimmune diseases will be discussed.
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Li D, Liu X, Liu T, Liu H, Tong L, Jia S, Wang YF. Neurochemical regulation of the expression and function of glial fibrillary acidic protein in astrocytes. Glia 2019; 68:878-897. [PMID: 31626364 DOI: 10.1002/glia.23734] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/27/2019] [Accepted: 09/17/2019] [Indexed: 12/30/2022]
Abstract
Glial fibrillary acidic protein (GFAP), a type III intermediate filament, is a marker of mature astrocytes. The expression of GFAP gene is regulated by many transcription factors (TFs), mainly Janus kinase-2/signal transducer and activator of transcription 3 cascade and nuclear factor κ-light-chain-enhancer of activated B cell signaling. GFAP expression is also modulated by protein kinase and other signaling molecules that are elicited by neuronal activity and hormones. Abnormal expression of GFAP proteins occurs in neuroinflammation, neurodegeneration, brain edema-eliciting diseases, traumatic brain injury, psychiatric disorders and others. GFAP, mainly in α-isoform, is the major component of cytoskeleton and the scaffold of astrocytes, which is essential for the maintenance of astrocytic structure and shape. GFAP also has highly morphological plasticity because of its quick changes in assembling and polymerizing states in response to environmental challenges. This plasticity and its corresponding cellular morphological changes endow astrocytes the functions of physical barrier between adjacent neurons and stabilizer of extracellular environment. Moreover, GFAP colocalizes and even molecularly associates with many functional molecules. This feature allows GFAP to function as a platform for direct interactions between different molecules. Last, GFAP involves transportation and localization of other functional proteins and thus serves as a protein transport guide in astrocytes. This guiding role of GFAP involves an elastic retraction and extension cytoskeletal network that couples with GFAP reassembling, transporting, and membrane protein recycling machinery. This paper reviews our current understanding of the expression and functions of GFAP as well as their regulation.
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Affiliation(s)
- Dongyang Li
- Department of Physiology, Harbin Medical University, Harbin, China
| | - Xiaoyu Liu
- Department of Physiology, Harbin Medical University, Harbin, China
| | - Tianming Liu
- Department of Physiology, Harbin Medical University, Harbin, China
| | - Haitao Liu
- Department of Physiology, Harbin Medical University, Harbin, China
| | - Li Tong
- Department of Physiology, Harbin Medical University, Harbin, China
| | - Shuwei Jia
- Department of Physiology, Harbin Medical University, Harbin, China
| | - Yu-Feng Wang
- Department of Physiology, Harbin Medical University, Harbin, China
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Gallart-Palau X, Tan LM, Serra A, Gao Y, Ho HH, Richards AM, Kandiah N, Chen CP, Kalaria RN, Sze SK. Degenerative protein modifications in the aging vasculature and central nervous system: A problem shared is not always halved. Ageing Res Rev 2019; 53:100909. [PMID: 31116994 DOI: 10.1016/j.arr.2019.100909] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 04/16/2019] [Accepted: 05/16/2019] [Indexed: 02/08/2023]
Abstract
Aging influences the pathogenesis and progression of several major diseases affecting both the cardiovascular system (CVS) and central nervous system (CNS). Defining the common molecular features that underpin these disorders in these crucial body systems will likely lead to increased quality of life and improved 'health-span' in the global aging population. Degenerative protein modifications (DPMs) have been strongly implicated in the molecular pathogenesis of several age-related diseases affecting the CVS and CNS, including atherosclerosis, heart disease, dementia syndromes, and stroke. However, these isolated findings have yet to be integrated into a wider framework, which considers the possibility that, despite their distinct features, CVS and CNS disorders may in fact be closely related phenomena. In this work, we review the current literature describing molecular roles of the major age-associated DPMs thought to significantly impact on human health, including carbamylation, citrullination and deamidation. In particular, we focus on data indicating that specific DPMs are shared between multiple age-related diseases in both CVS and CNS settings. By contextualizing these data, we aim to assist future studies in defining the universal mechanisms that underpin both vascular and neurological manifestations of age-related protein degeneration.
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Xu K, Cooney KA, Shin EY, Wang L, Deppen JN, Ginn SC, Levit RD. Adenosine from a biologic source regulates neutrophil extracellular traps (NETs). J Leukoc Biol 2019; 105:1225-1234. [PMID: 30907983 DOI: 10.1002/jlb.3vma0918-374r] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 02/01/2019] [Accepted: 02/25/2019] [Indexed: 01/27/2023] Open
Abstract
Neutrophil extracellular traps (NETs) are implicated in autoimmune, thrombotic, malignant, and inflammatory diseases; however, little is known of their endogenous regulation under basal conditions. Inflammatory effects of neutrophils are modulated by extracellular purines such as adenosine (ADO) that is inhibitory or ATP that generally up-regulates effector functions. In order to evaluate the effects of ADO on NETs, human neutrophils were isolated from peripheral venous blood from healthy donors and stimulated to make NETs. Treatment with ADO inhibited NET production as quantified by 2 methods: SYTOX green fluorescence and human neutrophil elastase (HNE)-DNA ELISA assay. Specific ADO receptor agonist and antagonist were tested for their effects on NET production. The ADO 2A receptor (A2A R) agonist CSG21680 inhibited NETs to a similar degree as ADO, whereas the A2A R antagonist ZM241385 prevented ADO's NET-inhibitory effects. Additionally, CD73 is a membrane bound ectonucleotidase expressed on mesenchymal stromal cells (MSCs) that allows manipulation of extracellular purines in tissues such as bone marrow. The effects of MSCs on NET formation were evaluated in coculture. MSCs reduced NET formation in a CD73-dependent manner. These results imply that extracellular purine balance may locally regulate NETosis and may be actively modulated by stromal cells to maintain tissue homeostasis.
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Affiliation(s)
- Kai Xu
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
- Department of Cardiovascular Medicine, Xiangya Hospital, Changsha, China
| | - Kimberly A Cooney
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Eric Y Shin
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Lanfang Wang
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Juline N Deppen
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Sydney C Ginn
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Rebecca D Levit
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
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Peptidylarginine Deiminases Post-Translationally Deiminate Prohibitin and Modulate Extracellular Vesicle Release and MicroRNAs in Glioblastoma Multiforme. Int J Mol Sci 2018; 20:ijms20010103. [PMID: 30597867 PMCID: PMC6337164 DOI: 10.3390/ijms20010103] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 12/22/2018] [Accepted: 12/25/2018] [Indexed: 12/19/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most aggressive form of adult primary malignant brain tumour with poor prognosis. Extracellular vesicles (EVs) are a key-mediator through which GBM cells promote a pro-oncogenic microenvironment. Peptidylarginine deiminases (PADs), which catalyze the post-translational protein deimination of target proteins, are implicated in cancer, including via EV modulation. Pan-PAD inhibitor Cl-amidine affected EV release from GBM cells, and EV related microRNA cargo, with reduced pro-oncogenic microRNA21 and increased anti-oncogenic microRNA126, also in combinatory treatment with the chemotherapeutic agent temozolomide (TMZ). The GBM cell lines under study, LN18 and LN229, differed in PAD2, PAD3 and PAD4 isozyme expression. Various cytoskeletal, nuclear and mitochondrial proteins were identified to be deiminated in GBM, including prohibitin (PHB), a key protein in mitochondrial integrity and also involved in chemo-resistance. Post-translational deimination of PHB, and PHB protein levels, were reduced after 1 h treatment with pan-PAD inhibitor Cl-amidine in GBM cells. Histone H3 deimination was also reduced following Cl-amidine treatment. Multifaceted roles for PADs on EV-mediated pathways, as well as deimination of mitochondrial, nuclear and invadopodia related proteins, highlight PADs as novel targets for modulating GBM tumour communication.
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Olsen I, Singhrao SK, Potempa J. Citrullination as a plausible link to periodontitis, rheumatoid arthritis, atherosclerosis and Alzheimer's disease. J Oral Microbiol 2018; 10:1487742. [PMID: 29963294 PMCID: PMC6022223 DOI: 10.1080/20002297.2018.1487742] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 05/29/2018] [Indexed: 12/12/2022] Open
Abstract
Periodontitis, rheumatoid arthritis (RA), atherosclerosis (AS), and Alzheimer’s disease (AD) are examples of complex human diseases with chronic inflammatory components in their etiologies. The initial trigger of inflammation that progresses to these diseases remains unresolved. Porphyromonas gingivalis is unique in its ability to secrete the P. gingivalis-derived peptidyl arginine deiminase (PPAD) and consequently offers a plausible and exclusive link to these diseases through enzymatic conversion of arginine to citrulline. Citrullination is a post-translational enzymatic modification of arginine residues in proteins formed as part of normal physiological processes. However, PPAD has the potential to modify self (bacterial) and host proteins by deimination of arginine amino acid residues, preferentially at the C-terminus. Migration of P. gingivalis and/or its secreted PPAD into the bloodstream opens up the possibility that this enzyme will citrullinate proteins at disparate body sites. Citrullination is associated with the pathogenesis of multifactorial diseases such as RA and AD, which have an elusive external perpetrator as they show epidemiological associations with periodontitis. Therefore, PPAD deserves some prominence as an external antigen, in at least, a subset of RA and AD cases, with as yet unidentified, immune/genetic vulnerabilities.
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Affiliation(s)
- Ingar Olsen
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Sim K Singhrao
- Dementia and Neurodegeneration Research Group, Faculty of Clinical and Biomedical Sciences, University of Central Lancashire, Preston, UK
| | - Jan Potempa
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Microbiology, Jagiellonian University, Kraków, Poland.,Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA
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Amar M, Singh A, Mallick BN. Noradrenergic β-Adrenoceptor-Mediated Intracellular Molecular Mechanism of Na-K ATPase Subunit Expression in C6 Cells. Cell Mol Neurobiol 2017; 38:441-457. [PMID: 28353187 DOI: 10.1007/s10571-017-0488-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 03/23/2017] [Indexed: 11/26/2022]
Abstract
Rapid eye movement sleep deprivation-associated elevated noradrenaline increases and decreases neuronal and glial Na-K ATPase activity, respectively. In this study, using C6 cell-line as a model, we investigated the possible intracellular molecular mechanism of noradrenaline-induced decreased glial Na-K ATPase activity. The cells were treated with noradrenaline in the presence or absence of adrenoceptor antagonists, modulators of extra- and intracellular Ca++ and modulators of intracellular signalling pathways. We observed that noradrenaline acting on β-adrenoceptor decreased Na-K ATPase activity and mRNA expression of the catalytic α2-Na-K ATPase subunit in the C6 cells. Further, cAMP and protein kinase-A mediated release of intracellular Ca++ played a critical role in such decreased α2-Na-K ATPase expression. In contrast, noradrenaline acting on β-adrenoceptor up-regulated the expression of regulatory β2-Na-K ATPase subunit, which although was cAMP and Ca++ dependent, was independent of protein kinase-A and protein kinase-C. Combining these with previous findings (including ours) we have proposed a working model for noradrenaline-induced suppression of glial Na-K ATPase activity and alteration in its subunit expression. The findings help understanding noradrenaline-associated maintenance of brain excitability during health and altered states, particularly in relation to rapid eye movement sleep and its deprivation when the noradrenaline level is naturally altered.
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Affiliation(s)
- Megha Amar
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Abhishek Singh
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
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