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Zhang B, Guan Y, Zeng D, Wang R. Arginine methylation and respiratory disease. Transl Res 2024:S1931-5244(24)00046-X. [PMID: 38453053 DOI: 10.1016/j.trsl.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
Arginine methylation, a vital post-translational modification, plays a pivotal role in numerous cellular functions such as signal transduction, DNA damage response and repair, regulation of gene transcription, mRNA splicing, and protein interactions. Central to this modification is the role of protein arginine methyltransferases (PRMTs), which have been increasingly recognized for their involvement in the pathogenesis of various respiratory diseases. This review begins with an exploration of the biochemical underpinnings of arginine methylation, shedding light on the intricate molecular regulatory mechanisms governed by PRMTs. It then delves into the impact of arginine methylation and the dysregulation of arginine methyltransferases in diverse pulmonary disorders. Concluding with a focus on the therapeutic potential and recent advancements in PRMT inhibitors, this article aims to offer novel perspectives and therapeutic avenues for the management and treatment of respiratory diseases.
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Affiliation(s)
- Binbin Zhang
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, PR China
| | - Youhong Guan
- Department of Infectious Diseases, Hefei Second People's Hospital, Hefei 230001, Anhui Province, PR China
| | - Daxiong Zeng
- Department of Pulmonary and Critical Care Medicine, Dushu Lake Hospital Affiliated to Soochow University, Medical Center of Soochow University, Suzhou 215006, Jiangsu Province, PR China.
| | - Ran Wang
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, PR China.
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2
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Chen T, Liu J, Li S, Wang P, Shang G. The role of protein arginine N-methyltransferases in inflammation. Semin Cell Dev Biol 2024; 154:208-214. [PMID: 36075843 DOI: 10.1016/j.semcdb.2022.08.005] [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: 08/13/2022] [Revised: 08/29/2022] [Accepted: 08/30/2022] [Indexed: 11/24/2022]
Abstract
Protein arginine methyltransferases (PRMTs) promote the methylation of numerous proteins at their arginine residues. An increasing number of publications have suggested that dysregulation of PRMTs participates in various human diseases, such as cardiovascular diseases, cancer, diabetes and neurodegenerative disorders. Inflammation is one normal response to infection or injury by immune system, which can keep body homeostasis. Emerging data reveal that inflammation is associated with the development of numerous diseases. Moreover, accumulated evidence proves that PRMTs have been characterized to regulate inflammation in various diseases. In this review article, we delineate the function and molecular mechanism of PRMTs in regulation of inflammation in current literature. Moreover, we discuss that targeting PRMTs by its inhibitors and compounds could have therapeutic potential.
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Affiliation(s)
- Ting Chen
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, China
| | - Jinxin Liu
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, China
| | - Shizhe Li
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, China
| | - Peter Wang
- Bengbu Medical College Key Laboratory of Cancer Research and Clinical Laboratory Diagnosis, Department of Biochemistry and Molecular Biology, School of Laboratory Medicine, Bengbu Medical College, Anhui 233030, China.
| | - Guanning Shang
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, China.
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3
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Zinellu A, Mangoni AA. Arginine, Transsulfuration, and Folic Acid Pathway Metabolomics in Chronic Obstructive Pulmonary Disease: A Systematic Review and Meta-Analysis. Cells 2023; 12:2180. [PMID: 37681911 PMCID: PMC10486395 DOI: 10.3390/cells12172180] [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: 07/27/2023] [Revised: 08/13/2023] [Accepted: 08/29/2023] [Indexed: 09/09/2023] Open
Abstract
There is an increasing interest in biomarkers of nitric oxide dysregulation and oxidative stress to guide management and identify new therapeutic targets in patients with chronic obstructive pulmonary disease (COPD). We conducted a systematic review and meta-analysis of the association between circulating metabolites within the arginine (arginine, citrulline, ornithine, asymmetric, ADMA, and symmetric, SDMA dimethylarginine), transsulfuration (methionine, homocysteine, and cysteine) and folic acid (folic acid, vitamin B6, and vitamin B12) metabolic pathways and COPD. We searched electronic databases from inception to 30 June 2023 and assessed the risk of bias and the certainty of evidence. In 21 eligible studies, compared to healthy controls, patients with stable COPD had significantly lower methionine (standardized mean difference, SMD = -0.50, 95% CI -0.95 to -0.05, p = 0.029) and folic acid (SMD = -0.37, 95% CI -0.65 to -0.09, p = 0.009), and higher homocysteine (SMD = 0.78, 95% CI 0.48 to 1.07, p < 0.001) and cysteine concentrations (SMD = 0.34, 95% CI 0.02 to 0.66, p = 0.038). Additionally, COPD was associated with significantly higher ADMA (SMD = 1.27, 95% CI 0.08 to 2.46, p = 0.037), SDMA (SMD = 3.94, 95% CI 0.79 to 7.08, p = 0.014), and ornithine concentrations (SMD = 0.67, 95% CI 0.13 to 1.22, p = 0.015). In subgroup analysis, the SMD of homocysteine was significantly associated with the biological matrix assessed and the forced expiratory volume in the first second to forced vital capacity ratio, but not with age, study location, or analytical method used. Our study suggests that the presence of significant alterations in metabolites within the arginine, transsulfuration, and folic acid pathways can be useful for assessing nitric oxide dysregulation and oxidative stress and identifying novel treatment targets in COPD. (PROSPERO registration number: CRD42023448036.).
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Affiliation(s)
- Angelo Zinellu
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy;
| | - Arduino A. Mangoni
- Discipline of Clinical Pharmacology, College of Medicine and Public Health, Flinders University, Bedford Park, SA 5042, Australia
- Department of Clinical Pharmacology, Flinders Medical Centre, Southern Adelaide Local Health Network, Bedford Park, SA 5042, Australia
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4
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Hu X, Chen Z, Wu X, Fu Q, Chen Z, Huang Y, Wu H. PRMT5 Facilitates Infectious Bursal Disease Virus Replication through Arginine Methylation of VP1. J Virol 2023; 97:e0163722. [PMID: 36786602 PMCID: PMC10062139 DOI: 10.1128/jvi.01637-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/22/2023] [Indexed: 02/15/2023] Open
Abstract
The infectious bursal diseases virus (IBDV) polymerase, VP1 protein, is responsible for transcription, initial translation and viral genomic replication. Knowledge about the new kind of post-translational modification of VP1 supports identification of novel drugs against the virus. Because the arginine residue is known to be methylated by protein arginine methyltransferase (PRMT) enzyme, we investigated whether IBDV VP1 is a substrate for known PRMTs. In this study, we show that VP1 is specifically associated with and methylated by PRMT5 at the arginine 426 (R426) residue. IBDV infection causes the accumulation of PRMT5 in the cytoplasm, which colocalizes with VP1 as a punctate structure. In addition, ectopic expression of PRMT5 significantly enhances the viral replication. In the presence of PMRT5, enzyme inhibitor and knockout of PRMT5 remarkably decreased viral replication. The polymerase activity of VP1 was severely damaged when R426 mutated to alanine, resulting in impaired viral replication. Our study reports a novel form of post-translational modification of VP1, which supports its polymerase function to facilitate the viral replication. IMPORTANCE Post-translational modification of infectious bursal disease virus (IBDV) VP1 is important for the regulation of its polymerase activity. Investigation of the significance of specific modification of VP1 can lead to better understanding of viral replication and can probably also help in identifying novel targets for antiviral compounds. Our work demonstrates the molecular mechanism of VP1 methylation mediated by PRMT5, which is critical for viral polymerase activity, as well as viral replication. Our study expands a novel insight into the function of arginine methylation of VP1, which might be useful for limiting the replication of IBDV.
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Affiliation(s)
- Xifeng Hu
- Department of Veterinary Preventive Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, People’s Republic of China
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Zheng Chen
- Department of Veterinary Preventive Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, People’s Republic of China
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Xiangdong Wu
- Department of Veterinary Preventive Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, People’s Republic of China
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Qiuling Fu
- Institute of Animal Husbandry and Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou, People’s Republic of China
| | - Zhen Chen
- Institute of Animal Husbandry and Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou, People’s Republic of China
| | - Yu Huang
- Institute of Animal Husbandry and Veterinary Medicine of Fujian Academy of Agricultural Sciences, Fuzhou, People’s Republic of China
| | - Huansheng Wu
- Department of Veterinary Preventive Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, People’s Republic of China
- Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, People’s Republic of China
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5
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Discovery of cysteine-targeting covalent histone methyltransferase inhibitors. Eur J Med Chem 2023; 246:115028. [PMID: 36528996 DOI: 10.1016/j.ejmech.2022.115028] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 12/02/2022] [Accepted: 12/13/2022] [Indexed: 12/15/2022]
Abstract
Post-translational methylation of histone lysine or arginine residues by histone methyltransferases (HMTs) plays crucial roles in gene regulation and diverse physiological processes and is implicated in a plethora of human diseases, especially cancer. Therefore, histone methyltransferases have been increasingly recognized as potential therapeutic targets. Consequently, the discovery and development of histone methyltransferase inhibitors have been pursued with steadily increasing interest over the past decade. However, the disadvantages of limited clinical efficacy, moderate selectivity, and propensity for acquired resistance have hindered the development of HMTs inhibitors. Targeted covalent modification represents a proven strategy for kinase drug development and has gained increasing attention in HMTs drug discovery. In this review, we focus on the discovery, characterization, and biological applications of covalent inhibitors for HMTs with emphasis on advancements in the field. In addition, we identify the challenges and future directions in this fast-growing research area of drug discovery.
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6
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Cahill KM, Johnson TK, Perveen Z, Schexnayder M, Xiao R, Heffernan LM, Langohr IM, Paulsen DB, Penn AL, Noël A. In utero exposures to mint-flavored JUUL aerosol impair lung development and aggravate house dust mite-induced asthma in adult offspring mice. Toxicology 2022; 477:153272. [PMID: 35878681 DOI: 10.1016/j.tox.2022.153272] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/04/2022] [Accepted: 07/21/2022] [Indexed: 11/18/2022]
Abstract
There are few reports concerning electronic nicotine delivery system (ENDS) use during pregnancy and no studies on asthma in prenatally JUUL-exposed offspring. Here, we tested the hypothesis that in utero JUUL exposure causes unfavorable birth outcomes and lasting pulmonary health effects in adult offspring. BALB/c dams were exposed to either air or mint-flavored JUUL aerosol, 1-hr/d, 20 consecutive days during gestation. Offspring were sacrificed on post-natal day (PND) 0 or at 11-week of age, following house dust mite (HDM) challenge. Gene expression was assessed in the uterine/placental tissue of the dams and lung responses were assessed in offspring at PND0 and at 11 weeks of age. JUUL-exposed offspring exhibited decreased body weights and lengths at PND0. These birth outcomes were accompanied by dysregulation of 54 genes associated with hypoxia and oxidative stress in the uterine/placental tissues of JUUL-exposed dams, as well as 24 genes in the lungs of the offspring related to Wnt signaling, plus 9 genes related to epigenetics, and 7 genes related to inflammation. At 11 weeks of age, JUUL + HDM exposed mice exhibited pulmonary inflammation when compared to their respective air + HDM controls. Additionally, the JUUL + HDM exposure dysregulated several genes associated with allergies and asthma. Further, the JUUL + HDM females showed decreased methylation of the promoter region of the Il10ra gene. Taken together, our mouse model shows that inhalation of JUUL aerosols during pregnancy affects the intrauterine environment, impairs lung development, and heightens the effects of allergic airway responses later in life.
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Affiliation(s)
- Kerin M Cahill
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Trenton K Johnson
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Zakia Perveen
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Matthew Schexnayder
- Lincoln Memorial University, College of Veterinary Medicine, 6965 Cumberland Gap Parkway, Harrogate, TN, USA
| | - Rui Xiao
- Department of Anesthesiology, Columbia University Medical Center, 630 West 168th Street, New York, NY 10032, USA
| | - Linda M Heffernan
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Ingeborg M Langohr
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Daniel B Paulsen
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Arthur L Penn
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Alexandra Noël
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA.
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7
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Raj V, Natarajan S, C M, Chatterjee S, Ramasamy M, Ramanujam GM, Arasu MV, Al-Dhabi NA, Choi KC, Arockiaraj J, Karuppiah K. Cholecalciferol and metformin protect against lipopolysaccharide-induced endothelial dysfunction and senescence by modulating sirtuin-1 and protein arginine methyltransferase-1. Eur J Pharmacol 2021; 912:174531. [PMID: 34710370 DOI: 10.1016/j.ejphar.2021.174531] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/14/2021] [Accepted: 09/27/2021] [Indexed: 01/07/2023]
Abstract
Endothelial cell activation through nuclear factor-kappa-B (NFkB) and mitogen-activated protein kinases leads to increased biosynthesis of pro-inflammatory mediators, cellular injury and vascular inflammation under lipopolysaccharide (LPS) exposure. Recent studies report that LPS up-regulated global methyltransferase activity. In this study, we observed that a combination treatment with metformin (MET) and cholecalciferol (VD) blocked the LPS-induced S-adenosylmethionine (SAM)-dependent methyltransferase (SDM) activity in Eahy926 cells. We found that LPS challenge (i) increased arginine methylation through up-regulated protein arginine methyltransferase-1 (PRMT1) mRNA, intracellular concentrations of asymmetric dimethylarginine (ADMA) and homocysteine (HCY); (ii) up-regulated cell senescence through mitigated sirtuin-1 (SIRT1) mRNA, nicotinamide adenine dinucleotide (NAD+) concentration, telomerase activity and total antioxidant capacity; and (iii) lead to endothelial dysfunction through compromised nitric oxide (NOx) production. However, these LPS-mediated cellular events in Eahy926 cells were restored by the synergistic effect of MET and VD. Taken together, this study identified that the dual compound effect inhibits LPS-induced protein arginine methylation, endothelial senescence and dysfunction through the components of epigenetic machinery, SIRT1 and PRMT1, which is a previously unidentified function of the test compounds. In silico results identified the presence of vitamin D response element (VDRE) sequence on PRMT1 suggesting that VDR could regulate PRMT1 gene expression. Further characterization of the cellular events associated with the dual compound challenge, using gene silencing approach or adenoviral constructs for SIRT1 and/or PRMT1 under inflammatory stress, could identify therapeutic strategies to address the endothelial consequences in vascular inflammation-mediated atherosclerosis.
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Affiliation(s)
- Vijay Raj
- Department of Medical Research, Medical College Hospital & Research Center, SRM Institute of Science and Technology, Kattankulathur, 603202, India
| | - Suganya Natarajan
- AU-KBC Research Centre, Madras Institute of Technology, Anna University, Chennai, 600025, India
| | - Marimuthu C
- Gleneagles Global Health City, Chennai, 600100, India
| | - Suvro Chatterjee
- AU-KBC Research Centre, Madras Institute of Technology, Anna University, Chennai, 600025, India
| | - Mohankumar Ramasamy
- Interdisciplinary Institute of Indian System of Medicine, SRM Institute of Science and Technology, Kattankulathur, 603202, India
| | - Ganesh Munuswamy Ramanujam
- Interdisciplinary Institute of Indian System of Medicine, SRM Institute of Science and Technology, Kattankulathur, 603202, India
| | - Mariadhas Valan Arasu
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Ki Choon Choi
- Grassland and Forage Division, National Institute of Animal Science, RDA, Seonghwan-Eup, Cheonan-Si, Chungnam, 330-801, Republic of Korea
| | - Jesu Arockiaraj
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603202, India; Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Humanities, Kattankulathur 603203, Chennai, Tamil Nadu, India
| | - Kanchana Karuppiah
- Department of Medical Research, Medical College Hospital & Research Center, SRM Institute of Science and Technology, Kattankulathur, 603202, India.
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8
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Protein arginine methylation: from enigmatic functions to therapeutic targeting. Nat Rev Drug Discov 2021; 20:509-530. [PMID: 33742187 DOI: 10.1038/s41573-021-00159-8] [Citation(s) in RCA: 168] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2021] [Indexed: 02/06/2023]
Abstract
Protein arginine methyltransferases (PRMTs) are emerging as attractive therapeutic targets. PRMTs regulate transcription, splicing, RNA biology, the DNA damage response and cell metabolism; these fundamental processes are altered in many diseases. Mechanistically understanding how these enzymes fuel and sustain cancer cells, especially in specific metabolic contexts or in the presence of certain mutations, has provided the rationale for targeting them in oncology. Ongoing inhibitor development, facilitated by structural biology, has generated tool compounds for the majority of PRMTs and enabled clinical programmes for the most advanced oncology targets, PRMT1 and PRMT5. In-depth mechanistic investigations using genetic and chemical tools continue to delineate the roles of PRMTs in regulating immune cells and cancer cells, and cardiovascular and neuronal function, and determine which pathways involving PRMTs could be synergistically targeted in combination therapies for cancer. This research is enhancing our knowledge of the complex functions of arginine methylation, will guide future clinical development and could identify new clinical indications.
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9
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Cigarette smoke extract induces airway epithelial cell death via repressing PRMT6/AKT signaling. Aging (Albany NY) 2020; 12:24301-24317. [PMID: 33260152 PMCID: PMC7762507 DOI: 10.18632/aging.202210] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 10/20/2020] [Indexed: 12/13/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is a severe public health threat world-wide. Cigarette smoke (CS)-induced airway epithelial cell death is a major pathway of pathogenesis in emphysema, a subtype of COPD. Protein arginine methyltransferase 6 (PRMT6) is a type I PRMT that catalyzes mono- and di-methylation on arginine residues within histone and non-histone proteins to modulate a variety of life processes, such as apoptosis. However, its role in CS-induced lung epithelial death has not been fully elucidated. Here we report that PRMT6 was decreased in mouse lung tissues from a cigarette smoke extract (CSE)-mediated experimental emphysematous model and in CSE treated or cigarette smoke exposed lung epithelial cells. Depletion of PRMT6 increased the protein levels of phosphatase PTEN and PI3K regulatory subunit p85 but decreased a downstream kinase PDK1, resulting in AKT dephosphorylation and thereafter, lung epithelial cell death. Knockout of PRMT6 inhibited epithelial survival and promoted CSE-mediated epithelial cell death, while ectopic expression of PRMT6 protein partially reversed epithelial cell death via PI3K/AKT-mediated cell survival signaling in CSE cellular models. These findings demonstrate that PRMT6 plays a crucial role in CS-induced bronchial epithelial cell death that may be a potential therapeutic target against the airway cell death in CS-induced COPD.
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10
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Zhai W, Sun H, Li Z, Li L, Jin A, Li Y, Chen J, Yang X, Sun Q, Lu S, Roth M. PRMT1 Modulates Processing of Asthma-Related Primary MicroRNAs (Pri-miRNAs) into Mature miRNAs in Lung Epithelial Cells. THE JOURNAL OF IMMUNOLOGY 2020; 206:11-22. [PMID: 33239422 DOI: 10.4049/jimmunol.2000887] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 10/28/2020] [Indexed: 01/07/2023]
Abstract
Protein arginine methyltransferase-1 (PRMT1) is an important epigenetic regulator of cell function and contributes to inflammation and remodeling in asthma in a cell type-specific manner. Disease-specific expression patterns of microRNAs (miRNA) are associated with chronic inflammatory lung diseases, including asthma. The de novo synthesis of miRNA depends on the transcription of primary miRNA (pri-miRNA) transcript. This study assessed the role of PRMT1 on pri-miRNA to mature miRNA process in lung epithelial cells. Human airway epithelial cells, BEAS-2B, were transfected with the PRMT1 expression plasmid pcDNA3.1-PRMT1 for 48 h. Expression profiles of miRNA were determined by small RNA deep sequencing. Comparing these miRNAs with datasets of microarrays from five asthma patients (Gene Expression Omnibus dataset), 12 miRNAs were identified that related to PRMT1 overexpression and to asthma. The overexpression or knockdown of PRMT1 modulated the expression of the asthma-related miRNAs and their pri-miRNAs. Coimmunoprecipitation showed that PRMT1 formed a complex with STAT1 or RUNX1 and thus acted as a coactivator, stimulating the transcription of pri-miRNAs. Stimulation with TGF-β1 promoted the interaction of PRMT1 with STAT1 or RUNX1, thereby upregulating the transcription of two miRNAs: let-7i and miR-423. Subsequent chromatin immunoprecipitation assays revealed that the binding of the PRMT1/STAT1 or PRMT1/RUNX1 coactivators to primary let-7i (pri-let-7i) and primary miR (pri-miR) 423 promoter was critical for pri-let-7i and pri-miR-423 transcription. This study describes a novel role of PRMT1 as a coactivator for STAT1 or RUNX1, which is essential for the transcription of pri-let-7i and pri-miR-423 in epithelial cells and might be relevant to epithelium dysfunction in asthma.
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Affiliation(s)
- Weiqi Zhai
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Haoming Sun
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Zhi Li
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Li Li
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Ai Jin
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yuwen Li
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jian Chen
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiaojun Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China;
| | - Qingzhu Sun
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China; .,Pneumology and Pulmonary Cell Research, Department of Biomedicine, University Hospital Basel, CH-4031 Basel, Switzerland; and
| | - Shemin Lu
- Department of Biochemistry and Molecular Biology, Xi'an Jiaotong University Health Science Center, Xi'an 710061, Shaanxi, China
| | - Michael Roth
- Pneumology and Pulmonary Cell Research, Department of Biomedicine, University Hospital Basel, CH-4031 Basel, Switzerland; and
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11
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Yang C, Zhang J, Ma Y, Wu C, Cui W, Wang L. Histone methyltransferase and drug resistance in cancers. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2020; 39:173. [PMID: 32859239 PMCID: PMC7455899 DOI: 10.1186/s13046-020-01682-z] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 08/19/2020] [Indexed: 02/07/2023]
Abstract
A number of novel anticancer drugs have been developed in recent years. However, the mortality of cancer patients remains high because of the emergence of drug resistance. It was reported that drug resistance might involved in changes in gene expression without changing genotypes, which is similar to epigenetic modification. Some studies indicated that targeting histone methyltransferase can reverse drug resistance. Hence, the use of histone methyltransferase inhibitors or histone demethylase inhibitors opens new therapeutic approaches for cancer treatment. While the relationship between histone methyltransferase and tumor resistance has been determined, there is a lack of updated review on the association between them. In this review, we summarized the mechanisms of histone methyltransferases in cancer drug resistance and the therapeutic strategies of targeting histone methyltransferase to reverse drug resistance.
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Affiliation(s)
- Cheng Yang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Benxi, People's Republic of China
| | - Jiayu Zhang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Benxi, People's Republic of China
| | - Yukui Ma
- Shandong Academy of Pharmaceutical Sciences, Jinan, China
| | - Chunfu Wu
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Benxi, People's Republic of China
| | - Wei Cui
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.
| | - Lihui Wang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China. .,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Benxi, People's Republic of China.
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12
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Zhu Y, Yu C, Zhuang S. Protein arginine methyltransferase 1 mediates renal fibroblast activation and fibrogenesis through activation of Smad3 signaling. Am J Physiol Renal Physiol 2019; 318:F375-F387. [PMID: 31813251 DOI: 10.1152/ajprenal.00487.2019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Protein arginine methyltransferase 1 (PRMT1), which primarily causes asymmetric arginine methylation of histone and nonhistone proteins, has been found to activate gene expression and mediate multiple pathological processes. Its role in renal fibrosis, however, remains unclear. In the present study, we observed that PRMT1 and its specific epigenetic marker, asymmetric di-methylated histone 4 arginine 3 (H4R3Me2a), were highly expressed in cultured renal interstitial fibroblasts. Treatment of PRMT1 with AMI-1, a selective inhibitor of PRMT1, or silencing PRMT1 with siRNA inhibited serum-induced and transforming growth factor (TGF)-β1-induced expression of α-smooth muscle actin (α-SMA) and collagen type I, two hallmarks of renal fibroblast activation, in a dose-dependent and time-dependent manner. In a murine model of renal fibrosis induced by unilateral ureteral obstruction, PRMT1 expression and H4R3Me2a were also upregulated, which was coincident with increased expression of α-SMA, collagen type I, and fibronectin. Administration of AMI-1 reduced PRMT1 and H4R3Me2a expression, attenuated extracellular matrix protein deposition, and inhibited renal fibroblast activation and proliferation. Moreover, AMI-1 treatment inhibited Smad3 phosphorylation and TGF-β receptor I expression but prevented Smad7 downregulation both in the kidney after unilateral ureteral obstruction injury and in cultured renal interstitial fibroblasts exposed to TGF-β1. Collectively, these results demonstrate that PRMT1 may mediate renal fibroblast activation and renal fibrosis development through activation of the TGF-β/Smad3 signaling pathway. They also suggest that PRMT1 inhibition may be a potential therapeutic approach for the treatment of fibrotic kidney disease.
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Affiliation(s)
- Yu Zhu
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chao Yu
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shougang Zhuang
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Department of Medicine, Rhode Island Hospital and Alpert Medical School, Brown University Providence, Rhode Island
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13
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Carubbi C, Masselli E, Calabrò E, Bonati E, Galeone C, Andreoli R, Goldoni M, Corradi M, Sverzellati N, Pozzi G, Banchini A, Pastorino U, Vitale M. Sulphurous thermal water inhalation impacts respiratory metabolic parameters in heavy smokers. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2019; 63:1209-1216. [PMID: 31227888 DOI: 10.1007/s00484-019-01737-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/24/2019] [Accepted: 05/27/2019] [Indexed: 05/21/2023]
Abstract
Sulphurous thermal water inhalations have been traditionally used in the treatment of airway diseases. In vivo and in vitro studies reported that they ameliorate mucus rheology, mucociliary clearance and reduce inflammation. Cigarette smoking induces an inflammatory damage, with consequent remodeling of respiratory airways, which in turn affect pulmonary functions. Despite the anti-inflammatory effects of H2S are clinically documented in several airway inflammatory diseases, data on the effects of sulphurous thermal water treatment on pulmonary function and biomarkers of airways inflammation in smokers are still scant. Therefore, we investigated whether a conventional cycle of sulphurous thermal water inhalation produced changes in markers of respiratory inflammation and function. A cohort of 504 heavy current and former smokers underwent 10-day cycles of sulphurous thermal water inhalation. Pulmonary function and metabolic analyses on exhaled breath condensate were then performed at day 0 and after the 10-day treatment. Spirometric data did not change after spa therapy, while exhaled breath condensate analysis revealed that a single 10-day cycle of sulphurous water inhalation was sufficient to induce a statistically significant increase of citrulline levels along with a decrease in ornithine levels, thus shifting arginine metabolism towards a reduced nitric oxide production, i.e. an anti-inflammatory profile. Overall, sulphurous thermal water inhalation impacts on arginine catatabolic intermediates of airways cells, shifting their metabolic balance towards a reduction of the inflammatory activity, with potential benefits for smokers.
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Affiliation(s)
- Cecilia Carubbi
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126, Parma, Italy
| | - Elena Masselli
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126, Parma, Italy
| | - Elisa Calabrò
- Department of Internal Medicine, Ospedale Fatebenefratelli Sacco, Piazzale Principessa Clotilde 3, 20121, Milan, Italy
| | - Elisa Bonati
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126, Parma, Italy
| | - Carlotta Galeone
- Department of Clinical Sciences and Community Health, University of Milan, Via Commenda 19, 20122, Milan, Italy
| | - Roberta Andreoli
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126, Parma, Italy
| | - Matteo Goldoni
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126, Parma, Italy
| | - Massimo Corradi
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126, Parma, Italy
| | - Nicola Sverzellati
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126, Parma, Italy
| | - Giulia Pozzi
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126, Parma, Italy
| | - Antonio Banchini
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126, Parma, Italy
| | - Ugo Pastorino
- Section of Thoracic Surgery, Fondazione IRCCS Istituto Nazionale Tumori, via Venezian 1, 20133, Milan, Italy
| | - Marco Vitale
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126, Parma, Italy.
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14
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Zhang Y, van Haren MJ, Martin NI. Peptidic transition state analogues as PRMT inhibitors. Methods 2019; 175:24-29. [PMID: 31421210 DOI: 10.1016/j.ymeth.2019.08.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 08/02/2019] [Accepted: 08/06/2019] [Indexed: 12/21/2022] Open
Abstract
Protein arginine N-methyltransferases (PRMTs) methylate arginine residues in target proteins using the ubiquitous methyl donor S-adenosyl-l-methionine (AdoMet) as a cofactor. PRMTs play important roles in both healthy and disease states and as such inhibition of PRMTs has gained increasing interest. A primary challenge in the development of PRMT inhibitors is achieving specificity for the PRMT of interest as the active sites are highly conserved for all nine members of the PRMT family. Notably, PRMTs show very little redundancy in vivo due to their specific sets of protein substrates. However, relatively little is known about the interactions of PRMTs with their protein substrates that drive this substrate specificity. We here describe the extended application of a methodology recently developed in our group for the production of peptide-based transition state mimicking PRMT inhibitors. Using this approach, an adenosine moiety, mimicking that of the AdoMet cofactor, is covalently linked to the guanidine side chain of a target arginine residue contained in a peptidic fragment derived from a PRMT substrate protein. Using this approach, histone H4 tail peptide-based transition state mimics were synthesized wherein the adenosine group was linked to the Arg3 residue. H4R3 is a substrate for multiple PRMTs, including PRMT1 and PRMT6. The inhibition results obtained with these new H4-based transition state mimics show low micromolar IC50 values against PRMT1 and PRMT6, indicating that the methodology is applicable to the broader family of PRMTs.
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Affiliation(s)
- Yurui Zhang
- Biological Chemistry Group, Institute of Biology Leiden, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Matthijs J van Haren
- Biological Chemistry Group, Institute of Biology Leiden, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Nathaniel I Martin
- Biological Chemistry Group, Institute of Biology Leiden, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands.
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15
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Zhao WC, Li G, Huang CY, Jiang JL. Asymmetric dimethylarginine: An crucial regulator in tissue fibrosis. Eur J Pharmacol 2019; 854:54-61. [PMID: 30951718 DOI: 10.1016/j.ejphar.2019.03.055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/21/2019] [Accepted: 03/28/2019] [Indexed: 02/06/2023]
Abstract
Fibrosis is a reparative process with very few therapeutic options to prevent its progression to organ dysfunction. Chronic fibrotic diseases contribute to an estimated 45% of all death in the industrialized world. Asymmetric dimethylarginine (ADMA), an endothelial nitric oxide synthase inhibitor, plays a crucial role in the pathogenesis of various cardiovascular diseases associated with endothelial dysfunction. Recent reports have focused on ADMA in the pathogenesis of tissue fibrosis. This review discusses the current knowledge about ADMA biology, its association with risk factors of established fibrotic diseases and the potential pathophysiological mechanisms implicating ADMA in the process of tissue fibrosis.
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Affiliation(s)
- Wei-Chen Zhao
- Department of Pharmacology, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410078, China
| | - Ge Li
- Department of Pharmacology, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410078, China; Faculty of Medical Public Courses, Xinhua College of Sun Yat-sen University, Guangzhou, Guangdong, 510520, China
| | - Chu-Yi Huang
- Department of Pharmacology, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410078, China
| | - Jun-Lin Jiang
- Department of Pharmacology, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410078, China; Provincial Key Laboratory of Cardiovascular Research, Central South University, Changsha, 410078, China.
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16
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Fulton MD, Brown T, Zheng YG. Mechanisms and Inhibitors of Histone Arginine Methylation. CHEM REC 2018; 18:1792-1807. [PMID: 30230223 PMCID: PMC6348102 DOI: 10.1002/tcr.201800082] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 08/27/2018] [Indexed: 12/16/2022]
Abstract
Histone methylation plays an important regulatory role in chromatin restructuring and RNA transcription. Arginine methylation that is enzymatically catalyzed by the family of protein arginine methyltransferases (PRMTs) can either activate or repress gene expression depending on cellular contexts. Given the strong correlation of PRMTs with pathophysiology, great interest is seen in understanding molecular mechanisms of PRMTs in diseases and in developing potent PRMT inhibitors. Herein, we reviewed key research advances in the study of biochemical mechanisms of PRMT catalysis and their relevance to cell biology. We highlighted how a random binary, ordered ternary kinetic model for PRMT1 catalysis reconciles the literature reports and endorses a distributive mechanism that the enzyme active site utilizes for multiple turnovers of arginine methylation. We discussed the impacts of histone arginine methylation and its biochemical interplays with other key epigenetic marks. Challenges in developing small-molecule PRMT inhibitors were also discussed.
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Affiliation(s)
- Melody D Fulton
- Department of Pharmaceutical and Biomedical Sciences College of Pharmacy, University of Georgia, Athens, GA 30602
| | - Tyler Brown
- Department of Pharmaceutical and Biomedical Sciences College of Pharmacy, University of Georgia, Athens, GA 30602
| | - Y George Zheng
- Department of Pharmaceutical and Biomedical Sciences College of Pharmacy, University of Georgia, Athens, GA 30602
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17
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Dai G, Li B, Xu Y, Zeng Z, Yang H. Oxymatrine prevents the development of monocrotaline-induced pulmonary hypertension via regulation of the N G, N G-dimethyl-L-arginine metabolism pathways in rats. Eur J Pharmacol 2018; 842:338-344. [PMID: 30419238 DOI: 10.1016/j.ejphar.2018.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 11/06/2018] [Accepted: 11/06/2018] [Indexed: 12/21/2022]
Abstract
The purpose of this study was to investigate the potential effect of oxymatrine in monocrotaline-induced pulmonary hypertension and its possible influence on the NG,NG-dimethyl-L-arginine (ADMA) metabolism pathway. Pulmonary hypertension was induced in rats by a single-dose injection of monocrotaline (60 mg/kg). Daily oral administration of oxymatrine (25, 50 and 100 mg/kg) was started on the day following the monocrotaline injection for 28 days. Oxymatrine (50 and 100 mg/kg) significantly attenuated monocrotaline-induced lung and right ventricular hypertrophy, right ventricular systolic pressure elevation, and right ventricular dysfunction. Oxymatrine also reduced the thickening of monocrotaline-induced pulmonary arterial medial wall. Meanwhile, oxymatrine normalized the level of pulmonary asymmetric ADMA and attenuated the upregulated expression of protein arginine methyltransferase 1 (PRMT1). Oxymatrine had no effect on the expression of protein arginine methyltransferase 2 (PRMT2) and NG,NG-Dimethylarginine dimethylaminohydrolase 1 (DDAH1), which were upregulated in monocrotaline-induced pulmonary arterial hypertensive rats. However, the expression of the protein NG,NG-Dimethylarginine dimethylaminohydrolase 2 (DDAH2) did not differ among all groups (all P﹥0.05). These results suggest that oxymatrine may offer protective effects on the development of pulmonary hypertension by ameliorating pulmonary remodeling and modulating the ADMA metabolism pathway.
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Affiliation(s)
- Guidong Dai
- Key Laboratory for Modernization of Qiandongnan Miao & Dong Medicine, Qiandongnan Traditional Medicine Research & Development Center, Kaili University, 3 Kaiyuan Road, Kaili, Guizhou 556011, People's Republic of China
| | - Benpeng Li
- Key Laboratory for Modernization of Qiandongnan Miao & Dong Medicine, Qiandongnan Traditional Medicine Research & Development Center, Kaili University, 3 Kaiyuan Road, Kaili, Guizhou 556011, People's Republic of China
| | - Yuping Xu
- School of Life and Health Science, Kaili University, 3 Kaiyuan Road, Kaili, Guizhou 556011, People's Republic of China
| | - Zhuliang Zeng
- School of Life and Health Science, Kaili University, 3 Kaiyuan Road, Kaili, Guizhou 556011, People's Republic of China
| | - Hongyun Yang
- School of Life and Health Science, Kaili University, 3 Kaiyuan Road, Kaili, Guizhou 556011, People's Republic of China
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18
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Tsai KD, Lee WX, Chen W, Chen BY, Chen KL, Hsiao TC, Wang SH, Lee YJ, Liang SY, Shieh JC, Lin TH. Upregulation of PRMT6 by LPS suppresses Klotho expression through interaction with NF-κB in glomerular mesangial cells. J Cell Biochem 2018; 119:3404-3416. [PMID: 29131380 DOI: 10.1002/jcb.26511] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Accepted: 11/09/2017] [Indexed: 01/13/2023]
Abstract
Lipopolysaccharide (LPS) released from gram-negative bacteria stimulates immune responses in infected cells. Epigenetic modifications such as DNA methylation and protein methylation modulate LPS-induced innate immune gene expressions. Expression of the Klotho protein decreased with LPS treatment in rats. In a cellular model, information regarding the effect of LPS on Klotho expression was meager. In the present study, we demonstrated that LPS triggered global DNA and protein methylation in glomerular mesangial MES-13 cells. LPS upregulated protein expressions of enzymes central to cellular methylation reactions, especially protein arginine methyltransferase 6 (PRMT6) in MES-13 cells. Expression of the Klotho protein was diminished by LPS and was restored by 5-Aza-2'-deoxycytidine (5-Aza-2'-dc), AMI-1, and ammonium pyrrolidinedithiocarbamate (PDTC), but not adenosine aldehyde (AdOx). NF-κB was identified as a substrate for arginine methylation and interacted with PRMT6 in MES-13 cells. Inhibition of PRMT activity by AMI-1 blocked LPS-induced NF-κB nuclear translocation in MES-13 cells. Our data indicate that NF-κB negatively regulated Klotho expression with an interaction with PRMT6, which was upregulated by LPS in MES-13 cells.
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Affiliation(s)
- Kuen-Daw Tsai
- Department of Internal Medicine, China Medical University Beigang Hospital, Beigang Township, Yunlin County, Taiwan, Republic of China.,Institute of Molecular Biology, National Chung Cheng University, Minhsiung Township, Chiayi County, Taiwan, Republic of China.,School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan, Republic of China
| | - Wen-Xi Lee
- School of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung, Taiwan, Republic of China.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan, Republic of China
| | - Wei Chen
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chia-Yi Christian Hospital, Chiayi, Taiwan, Republic of China
| | - Bo-Yu Chen
- School of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung, Taiwan, Republic of China.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan, Republic of China
| | - Kuan-Lin Chen
- School of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung, Taiwan, Republic of China.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan, Republic of China
| | - Tzu-Chia Hsiao
- School of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung, Taiwan, Republic of China.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan, Republic of China
| | - Sue-Hong Wang
- School of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung, Taiwan, Republic of China.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan, Republic of China
| | - Yi-Ju Lee
- Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan, Republic of China
| | - Shan-Yuan Liang
- School of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung, Taiwan, Republic of China.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan, Republic of China
| | - Jia-Ching Shieh
- School of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung, Taiwan, Republic of China.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan, Republic of China
| | - Ting-Hui Lin
- School of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung, Taiwan, Republic of China.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan, Republic of China
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19
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Interaction assessments of the first S-adenosylmethionine competitive inhibitor and the essential interacting partner methylosome protein 50 with protein arginine methyltransferase 5 by combined computational methods. Biochem Biophys Res Commun 2017; 495:721-727. [PMID: 29154828 DOI: 10.1016/j.bbrc.2017.11.089] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Accepted: 11/13/2017] [Indexed: 01/01/2023]
Abstract
Protein arginine methyltransferase 5 (PRMT5) is the most promising anticancer target in PRMT family. In this study, based on the first S-adenosylmethionine (SAM) competitive small molecule inhibitor (17, compound number is from original paper) of PRMT5 reported in our recent paper, we determined the molecular mechanism of 17 interacting with PRMT5 by computational methods. Previously reported CMP5 was also thought of as a SAM competitive inhibitor of PRMT5, but the direct inhibition activity against PRMT5 at enzymatic level was not provided. Therefore, we tested the half-maximal inhibitory concentration (IC50) of CMP5 against PRMT5 at enzymatic level for the purpose of summarizing the interaction characteristics of SAM binding site inhibitors with PRMT5. Additionally, as the essential interacting partner of PRMT5, the binding attributes of the WD-repeat-containing protein MEP50 (methylosome protein 50) was investigated, and nine key residues that contribute most to PRMT5:MEP50 interaction were identified. These results could be helpful in discovering new potent and specific inhibitors of PRMT5, as well as in designing mutant residue assay to modulate the catalytic activity of PRMT5.
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20
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Li X, Lai Y, Li J, Zou M, Zou C. Oxidative stress destabilizes protein arginine methyltransferase 4 via glycogen synthase kinase 3β to impede lung epithelial cell migration. Am J Physiol Cell Physiol 2017. [PMID: 28637674 DOI: 10.1152/ajpcell.00073.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Oxidative stress impacts normal cellular function leading to the pathogenesis of various diseases including pulmonary illnesses. Protein arginine methyltransferase 4 (PRMT4) is critical for normal lung alveolar epithelial cell development; however, the regulation of PRMT4 within such pulmonary diseases has yet to be elucidated. Using biochemical approaches, we uncovered that peroxide (H2O2) treatment decreases PRMT4 protein stability in murine lung epithelial (MLE12) cells to impede cell migration. Protein kinase glycogen synthase kinase 3β (GSK-3β) interacts with PRMT4 and catalyzes PRMT4 T132 phosphorylation that protects PRMT4 from ubiquitin proteasomal degradation. H2O2 downregulates GSK-3β to reduce PRMT4 at protein level. PRMT4 promotes cell migration and H2O2 degrades PRMT4 to inhibit lung epithelial cell migration. These observations demonstrate that oxidative stress destabilizes PRMT4 via GSK-3β signaling to impede lung epithelial cell migration that may hinder the lung repair and regeneration process.
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Affiliation(s)
- Xiuying Li
- Acute Lung Injury Center of Excellence, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Yandong Lai
- Acute Lung Injury Center of Excellence, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Jin Li
- Acute Lung Injury Center of Excellence, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Mingyi Zou
- Acute Lung Injury Center of Excellence, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Chunbin Zou
- Acute Lung Injury Center of Excellence, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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21
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Chuang CY, Chang CP, Lee YJ, Lin WL, Chang WW, Wu JS, Cheng YW, Lee H, Li C. PRMT1 expression is elevated in head and neck cancer and inhibition of protein arginine methylation by adenosine dialdehyde or PRMT1 knockdown downregulates proliferation and migration of oral cancer cells. Oncol Rep 2017; 38:1115-1123. [PMID: 28656289 DOI: 10.3892/or.2017.5737] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 04/05/2017] [Indexed: 11/05/2022] Open
Abstract
Protein arginine methylation is a post-translational modification that has been implicated in signal transduction, gene transcription, DNA repair and RNA processing. Overexpression or deregulation of protein arginine methyltransferases (PRMTs) have been reported to be associated with various cancers but have not been studied in head and neck cancer (HNC). We investigated the involvement of the modification in HNC using oral cancer cell lines (SAS, OECM-1 and HSC-3) and an immortalized normal oral cells (S-G). The expression levels of the predominant PRMT1 were generally consistent with the levels of asymmetric dimethylarginine (ADMA), highest in SAS and OECM1, then S-G and low in HSC-3. Upon the treatment with an indirect methyltransferase inhibitor adenosine dialdehyde (AdOx), the ADMA levels in SAS and OECM1, but not that in S-G and HSC-3, decreased significantly. SAS and OECM with high ADMA levels grew faster than HSC-3 and S-G. The growth rate of the fast growing SAS and OECM, but not that of the other two cell lines, decreased significantly upon AdOx treatment. The migration activity of SAS and HSC-3, two cell lines with migration ability also decreased after the AdOx treatment. Immunohistochemical analyses of specimens from typical HNC patients showed strong PRMT1 expression in the tumor cells compared with neighboring normal cells. Knockdown of PRMT1 in SAS cells decreased the levels of PRMT1 and ADMA-containing proteins significantly. These cells showed decreased growth rate, reduced migration activity but increased expression of the epithelial marker E-cadherin. The present study thus provides fundamental background for evaluation of the PRMT1 gene as the therapeutic targets of HNC.
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Affiliation(s)
- Chun-Yi Chuang
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan, R.O.C
| | - Chien-Ping Chang
- Department of Biomedical Sciences, Chung Shan Medical University, Taichung, Taiwan, R.O.C
| | - Yu-Jen Lee
- Department of Biomedical Sciences, Chung Shan Medical University, Taichung, Taiwan, R.O.C
| | - Wei-Long Lin
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan, R.O.C
| | - Wen-Wei Chang
- Department of Biomedical Sciences, Chung Shan Medical University, Taichung, Taiwan, R.O.C
| | - Jia-Sian Wu
- Department of Biomedical Sciences, Chung Shan Medical University, Taichung, Taiwan, R.O.C
| | - Ya-Wen Cheng
- Graduate Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei 110, Taiwan, R.O.C
| | - Huei Lee
- Graduate Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei 110, Taiwan, R.O.C
| | - Chuan Li
- Department of Biomedical Sciences, Chung Shan Medical University, Taichung, Taiwan, R.O.C
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22
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Zheng Y, Huang L, Ge W, Yang M, Ma Y, Xie G, Wang W, Bian B, Li L, Nie H, Shen L. Protein Arginine Methyltransferase 5 Inhibition Upregulates Foxp3 + Regulatory T Cells Frequency and Function during the Ulcerative Colitis. Front Immunol 2017; 8:596. [PMID: 28588584 PMCID: PMC5440547 DOI: 10.3389/fimmu.2017.00596] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 05/05/2017] [Indexed: 12/19/2022] Open
Abstract
Ulcerative colitis (UC) pathogenesis is related to imbalance of immune responses, and the equilibrium between inflammatory T cells and Foxp3+ regulatory T cells (Tregs) plays an important role in the intestinal homeostasis. Protein arginine methyltransferases (PRMTs) regulate chromatin remodeling and gene expression. Here, we investigated whether inhibition of PRMTs affects colitis pathogenesis in mice and inflammatory bowel disease patients and further explored the underlying mechanisms. In this study, we found that protein arginine N-methyltransferase inhibitor 1 (AMI-1) treatments increased Tregs frequency, function, and reduced colitis incidence. Adoptive transfer of AMI-1-treated Tregs could reduce the colitis incidence. Colitis was associated with increased local PRMT5 expression, which was inhibited by AMI-1 treatment. Additionally, PRMT5 knockdown T cells produced a better response to TGFβ and promoted Tregs differentiation through decreased DNA methyltransferase 1 (DNMT1) expression. PRMT5 also enhanced H3K27me3 and DNMT1 binding to Foxp3 promoter, which restricted Tregs differentiation. Furthermore, PRMT5 knockdown led to decreased Foxp3 promoter methylation during Tregs induction. PRMT5 expression had a negative relationship with Tregs in UC patients, knockdown of PRMT5 expression increased Tregs frequency and decreased TNFα, IL-6, and IL-13 levels. Our study outlines a novel regulation of PRMT5 on Tregs development and function. Strategies to decrease PRMT5 expression might have therapeutic potential to control UC.
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Affiliation(s)
- Yingxia Zheng
- Department of Laboratory Medicine, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Institute of Biliary Tract Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liya Huang
- Department of Gerontology, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wensong Ge
- Department of Gastroenterology, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ming Yang
- Department of Anorectal Surgery, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanhui Ma
- Department of Laboratory Medicine, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guohua Xie
- Department of Laboratory Medicine, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weiwei Wang
- Department of Laboratory Medicine, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bingxian Bian
- Department of Laboratory Medicine, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Li Li
- Department of Laboratory Medicine, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hong Nie
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lisong Shen
- Department of Laboratory Medicine, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Structural Analysis of Glycine Sarcosine N-methyltransferase from Methanohalophilus portucalensis Reveals Mechanistic Insights into the Regulation of Methyltransferase Activity. Sci Rep 2016; 6:38071. [PMID: 27934872 PMCID: PMC5146677 DOI: 10.1038/srep38071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 11/04/2016] [Indexed: 12/22/2022] Open
Abstract
Methyltransferases play crucial roles in many cellular processes, and various regulatory mechanisms have evolved to control their activities. For methyltransferases involved in biosynthetic pathways, regulation via feedback inhibition is a commonly employed strategy to prevent excessive accumulation of the pathways’ end products. To date, no biosynthetic methyltransferases have been characterized by X-ray crystallography in complex with their corresponding end product. Here, we report the crystal structures of the glycine sarcosine N-methyltransferase from the halophilic archaeon Methanohalophilus portucalensis (MpGSMT), which represents the first structural elucidation of the GSMT methyltransferase family. As the first enzyme in the biosynthetic pathway of the osmoprotectant betaine, MpGSMT catalyzes N-methylation of glycine and sarcosine, and its activity is feedback-inhibited by the end product betaine. A structural analysis revealed that, despite the simultaneous presence of both substrate (sarcosine) and cofactor (S-adenosyl-L-homocysteine; SAH), the enzyme was likely crystallized in an inactive conformation, as additional structural changes are required to complete the active site assembly. Consistent with this interpretation, the bound SAH can be replaced by the methyl donor S-adenosyl-L-methionine without triggering the methylation reaction. Furthermore, the observed conformational state was found to harbor a betaine-binding site, suggesting that betaine may inhibit MpGSMT activity by trapping the enzyme in an inactive form. This work implicates a structural basis by which feedback inhibition of biosynthetic methyltransferases may be achieved.
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Hernandez S, Dominko T. Novel Protein Arginine Methyltransferase 8 Isoform Is Essential for Cell Proliferation. J Cell Biochem 2016; 117:2056-66. [PMID: 26851891 DOI: 10.1002/jcb.25508] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 02/04/2016] [Indexed: 01/13/2023]
Abstract
Identification of molecular mechanisms that regulate cellular replicative lifespan is needed to better understand the transition between a normal and a neoplastic cell phenotype. We have previously reported that low oxygen-mediated activity of FGF2 leads to an increase in cellular lifespan and acquisition of regeneration competence in human dermal fibroblasts (iRC cells). Though cells display a more plastic developmental phenotype, they remain non-tumorigenic when injected into SCID mice (Page et al. [2009] Cloning Stem Cells 11:417-426; Page et al. [2011] Eng Part A 17:2629-2640) allowing for investigation of mechanisms that regulate increased cellular lifespan in a non-tumorigenic system. Analysis of chromatin modification enzymes by qRT-PCR revealed a 13.3-fold upregulation of the arginine methyltransferase PRMT8 in iRC cells. Increased protein expression was confirmed in both iRC and human embryonic stem cells-the first demonstration of endogenous human PRMT8 expression outside the brain. Furthermore, iRC cells express a novel PRMT8 mRNA variant. Using siRNA-mediated knockdown we demonstrated that this novel variant was required for proliferation of human dermal fibroblasts (hDFs) and grade IV glioblastomas. PRMT8 upregulation in a non-tumorigenic system may offer a potential diagnostic biomarker and a therapeutic target for cells in pre-cancerous and cancerous states. J. Cell. Biochem. 117: 2056-2066, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Sarah Hernandez
- Department of Biology and Biotechnology, Worcester Polytechnic Institute, Worcester, MA
| | - Tanja Dominko
- Department of Biology and Biotechnology, Worcester Polytechnic Institute, Worcester, MA.,Bioengineering Institute, Worcester Polytechnic Institute, Worcester, MA.,Center for Biomedical Sciences and Engineering, University of Nova Gorica, Vipava, Slovenia
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Cao Y, Fang Y, Mu J, Liu X. High salt medium activates RhoA/ROCK and downregulates eNOS expression via the upregulation of ADMA. Mol Med Rep 2016; 14:606-12. [PMID: 27175806 DOI: 10.3892/mmr.2016.5241] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 04/18/2016] [Indexed: 11/05/2022] Open
Abstract
Endothelial dysfunction has an important role in the development and progression of salt-sensitive hypertension. Asymmetric dimethylarginine (ADMA), which is an endogenous inhibitor of nitric oxide synthase (NOS), has been demonstrated to be involved in the pathophysiological processes of endothelial dysfunction and salt‑sensitive hypertension. However, it is currently unclear how high salt intake may induce these processes. The present study investigated the effects of high salt medium on ADMA, endothelial NOS (eNOS) and the Ras homolog gene family, member A (RhoA)/Rho-associated protein kinase (ROCK) pathway in the EA.hy926 umbilical vein cell line. The results demonstrated that high salt medium significantly increased the concentration of ADMA, the expression of protein arginine methyltransferase 1 (PRMT‑1) and RhoA, and the activity of ROCK, and downregulated the expression of eNOS. Knockdown of PRMT-1 with small interfering RNA (siRNA) significantly abrogated the aforementioned effects. These results indicated that ADMA has a key role in high salt‑mediated activation of the RhoA/ROCK pathway and inhibition of eNOS biosynthesis. siRNA‑PRMT‑1 may be considered a novel remedy for the treatment of endothelial dysfunction.
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Affiliation(s)
- Yu Cao
- Department of Pediatrics, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Yuan Fang
- Department of Cardiovascular Medicine, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jianjun Mu
- Department of Cardiovascular Medicine, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Xiaohong Liu
- Department of Pediatrics, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
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Specific regulation of PRMT1 expression by PIAS1 and RKIP in BEAS-2B epithelia cells and HFL-1 fibroblasts in lung inflammation. Sci Rep 2016; 6:21810. [PMID: 26911452 PMCID: PMC4766407 DOI: 10.1038/srep21810] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 01/21/2016] [Indexed: 01/04/2023] Open
Abstract
Protein arginine methyltransferase 1 (PRMT1) catalyzes methylation of histones and other cellular proteins, and thus regulates gene transcription and protein activity. In antigen-induced pulmonary inflammation (AIPI) PRMT1 was up-regulated in the epithelium, while in chronic AIPI, increased PRMT1 shifted to fibroblasts. In this study we investigated the cell type specific regulatory mechanism of PRMT1. Epithelial cells and fibroblasts were stimulated with IL-4 or IL-1β. Gene and protein expression were determined by RT-qPCR, immunohistochemistry staining and Western blotting. Signaling pathway inhibitors, siRNAs and shRNA were used to determine the regulatory mechanism of PRMT1. The results showed that IL-4 up-regulated PRMT1 through STAT6 signaling in epithelial cells, while IL-1β regulated PRMT1 through NF-κB in fibroblasts. The NF-kB inhibitor protein RKIP was highly expressed in epithelial cells and blocked IL-1β induced PRMT1 up-regulation; while the STAT6 inhibitor protein PIAS1 was expressed in fibroblasts and suppressed IL-4 induced PRMT1 expression. Furthermore, IL-4 stimulated epithelial cells to release IL-1β which up-regulated PRMT1 expression in fibroblasts. In conclusion, the inhibitor proteins RKIP and PIAS1 regulated the cell type and signaling specific expression of PRMT1. Thus PRMT1 expression in structural lung cells in asthma can be considered as potential target for new therapeutic intervention.
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Hu H, Qian K, Ho MC, Zheng YG. Small Molecule Inhibitors of Protein Arginine Methyltransferases. Expert Opin Investig Drugs 2016; 25:335-58. [PMID: 26789238 DOI: 10.1517/13543784.2016.1144747] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
INTRODUCTION Arginine methylation is an abundant posttranslational modification occurring in mammalian cells and catalyzed by protein arginine methyltransferases (PRMTs). Misregulation and aberrant expression of PRMTs are associated with various disease states, notably cancer. PRMTs are prominent therapeutic targets in drug discovery. AREAS COVERED The authors provide an updated review of the research on the development of chemical modulators for PRMTs. Great efforts are seen in screening and designing potent and selective PRMT inhibitors, and a number of micromolar and submicromolar inhibitors have been obtained for key PRMT enzymes such as PRMT1, CARM1, and PRMT5. The authors provide a focus on their chemical structures, mechanism of action, and pharmacological activities. Pros and cons of each type of inhibitors are also discussed. EXPERT OPINION Several key challenging issues exist in PRMT inhibitor discovery. Structural mechanisms of many PRMT inhibitors remain unclear. There lacks consistency in potency data due to divergence of assay methods and conditions. Physiologically relevant cellular assays are warranted. Substantial engagements are needed to investigate pharmacodynamics and pharmacokinetics of the new PRMT inhibitors in pertinent disease models. Discovery and evaluation of potent, isoform-selective, cell-permeable and in vivo-active PRMT modulators will continue to be an active arena of research in years ahead.
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Affiliation(s)
- Hao Hu
- a Department of Pharmaceutical and Biomedical Sciences , The University of Georgia , Athens , GA , USA
| | - Kun Qian
- a Department of Pharmaceutical and Biomedical Sciences , The University of Georgia , Athens , GA , USA
| | - Meng-Chiao Ho
- b Institute of Biological Chemistry , Academia Sinica , Nankang , Taipei , Taiwan
| | - Y George Zheng
- a Department of Pharmaceutical and Biomedical Sciences , The University of Georgia , Athens , GA , USA
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Elevated protein arginine methyltransferase 1 expression regulates fibroblast motility in pulmonary fibrosis. Biochim Biophys Acta Mol Basis Dis 2015; 1852:2678-88. [DOI: 10.1016/j.bbadis.2015.09.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 08/14/2015] [Accepted: 09/16/2015] [Indexed: 12/29/2022]
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Pekarova M, Koudelka A, Kolarova H, Ambrozova G, Klinke A, Cerna A, Kadlec J, Trundova M, Sindlerova Svihalkova L, Kuchta R, Kuchtova Z, Lojek A, Kubala L. Asymmetric dimethyl arginine induces pulmonary vascular dysfunction via activation of signal transducer and activator of transcription 3 and stabilization of hypoxia-inducible factor 1-alpha. Vascul Pharmacol 2015; 73:138-48. [PMID: 26091577 DOI: 10.1016/j.vph.2015.06.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 05/02/2015] [Accepted: 06/15/2015] [Indexed: 11/16/2022]
Abstract
Pulmonary hypertension (PH), associated with imbalance in vasoactive mediators and massive remodeling of pulmonary vasculature, represents a serious health complication. Despite the progress in treatment, PH patients typically have poor prognoses with severely affected quality of life. Asymmetric dimethyl arginine (ADMA), endogenous inhibitor of endothelial nitric oxide synthase (eNOS), also represents one of the critical regulators of pulmonary vascular functions. The present study describes a novel mechanism of ADMA-induced dysfunction in human pulmonary endothelial and smooth muscle cells. The effect of ADMA was compared with well-established model of hypoxia-induced pulmonary vascular dysfunction. It was discovered for the first time that ADMA induced the activation of signal transducer and activator of transcription 3 (STAT3) and stabilization of hypoxia inducible factor 1α (HIF-1α) in both types of cells, associated with drastic alternations in normal cellular functions (e.g., nitric oxide production, cell proliferation/Ca(2+) concentration, production of pro-inflammatory mediators, and expression of eNOS, DDAH1, and ICAM-1). Additionally, ADMA significantly enhanced the hypoxia-mediated increase in the signaling cascades. In summary, increased ADMA may lead to manifestation of PH phenotype in human endothelial and smooth muscle cells via the STAT3/HIF-1α cascade. Therefore this signaling pathway represents the potential pathway for future clinical interventions in PH.
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Affiliation(s)
- Michaela Pekarova
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czech Republic.
| | - Adolf Koudelka
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czech Republic
| | - Hana Kolarova
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czech Republic
| | - Gabriela Ambrozova
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czech Republic
| | - Anna Klinke
- Department of Experimental Cardiology, University Hospital of Cologne, Kerpener Str. 62, 50924 Cologne, Germany
| | - Anna Cerna
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czech Republic
| | - Jaroslav Kadlec
- Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3058/10, 616 00 Brno, Czech Republic
| | - Maria Trundova
- Institute of Biotechnology, Academy of Sciences of the Czech Republic, v.v.i., BIOCEV, Videnska 1083, 142 20 Prague 4, Czech Republic
| | - Lenka Sindlerova Svihalkova
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czech Republic
| | - Radek Kuchta
- Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3058/10, 616 00 Brno, Czech Republic
| | - Zdenka Kuchtova
- Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3058/10, 616 00 Brno, Czech Republic
| | - Antonin Lojek
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czech Republic
| | - Lukas Kubala
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612 65 Brno, Czech Republic; International Clinical Research Center - Center of Biomolecular and Cellular Engineering, St. Anne's University Hospital, Brno, Czech Republic
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30
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Sun Q, Liu L, Roth M, Tian J, He Q, Zhong B, Bao R, Lan X, Jiang C, Sun J, Yang X, Lu S. PRMT1 Upregulated by Epithelial Proinflammatory Cytokines Participates in COX2 Expression in Fibroblasts and Chronic Antigen-Induced Pulmonary Inflammation. THE JOURNAL OF IMMUNOLOGY 2015; 195:298-306. [PMID: 26026059 DOI: 10.4049/jimmunol.1402465] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 05/04/2015] [Indexed: 01/30/2023]
Abstract
Protein arginine methyltransferase (PRMT)1, methylating both histones and key cellular proteins, has emerged as a key regulator of various cellular processes. This study aimed to identify the mechanism that regulates PRMT1 in chronic Ag-induced pulmonary inflammation (AIPI) in the E3 rat asthma model. E3 rats were challenged with OVA for 1 or 8 wk to induce acute or chronic AIPI. Expression of mRNAs was detected by real-time quantitative PCR. PRMT1, TGF-β, COX2, and vascular endothelial growth factor protein expression in lung tissues was determined by immunohistochemistry staining and Western blotting. In the in vitro study, IL-4-stimulated lung epithelial cell (A549) medium (ISEM) with or without anti-TGF-β Ab was applied to human fibroblasts from lung (HFL1). The proliferation of HFL1 was determined by MTT. AMI-1 (pan-PRMT inhibitor) was administered intranasally to chronic AIPI rats to determine PRMT effects on asthmatic parameters. In lung tissue sections, PRMT1 expression was significantly upregulated, mainly in epithelial cells, in acute AIPI lungs, whereas it was significantly upregulated mainly in fibroblasts in chronic AIPI lungs. The in vitro study revealed that ISEM elevates PRMT1, COX2, and vascular endothelial growth factor expressions, and it promoted fibroblast proliferation. The application of anti-TGF-β Ab suppressed COX2 upregulation by ISEM. AMI-1 inhibited the expression of COX2 in TGF-β-stimulated cells. In the in vivo experiment, AMI-1 administered to AIPI rats reduced COX2 production and humoral immune response, and it abrogated mucus secretion and collagen generation. These findings suggested that TGF-β-induced PRMT1 expression participates in fibroblast proliferation and chronic airway inflammation in AIPI.
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Affiliation(s)
- Qingzhu Sun
- Department of Biochemistry and Molecular Biology, School of Basic Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, People's Republic of China; University Hospital Basel, University of Basel, 4031 Basel, Switzerland; and
| | - Li Liu
- Department of Biochemistry and Molecular Biology, School of Basic Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, People's Republic of China
| | - Michael Roth
- University Hospital Basel, University of Basel, 4031 Basel, Switzerland; and
| | - Jia Tian
- Department of Biochemistry and Molecular Biology, School of Basic Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, People's Republic of China
| | - Qirui He
- Department of Biochemistry and Molecular Biology, School of Basic Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, People's Republic of China
| | - Bo Zhong
- Department of Biochemistry and Molecular Biology, School of Basic Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, People's Republic of China
| | - Ruanjuan Bao
- Department of Biochemistry and Molecular Biology, School of Basic Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, People's Republic of China
| | - Xi Lan
- Department of Biochemistry and Molecular Biology, School of Basic Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, People's Republic of China
| | - Congshan Jiang
- Department of Biochemistry and Molecular Biology, School of Basic Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, People's Republic of China
| | - Jian Sun
- Department of Biochemistry and Molecular Biology, School of Basic Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, People's Republic of China
| | - Xudong Yang
- Department of Biochemistry and Molecular Biology, School of Basic Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, People's Republic of China;
| | - Shemin Lu
- Department of Biochemistry and Molecular Biology, School of Basic Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, People's Republic of China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, People's Republic of China; Department of Epidemiology and Health Statistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, People's Republic of China
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31
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Aschner JL, Fike CD. Plasma asymmetric dimethylarginine in infants with bronchopulmonary dysplasia: a promising biomarker despite uncertain pathogenic significance. J Pediatr 2015; 166:222-4. [PMID: 25454308 DOI: 10.1016/j.jpeds.2014.10.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 10/17/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Judy L Aschner
- Department of Pediatrics, Albert Einstein College of Medicine, Children's Hospital at Montefiore, Bronx, New York.
| | - Candice D Fike
- Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, Tennessee
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32
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Tough DF, Lewis HD, Rioja I, Lindon MJ, Prinjha RK. Epigenetic pathway targets for the treatment of disease: accelerating progress in the development of pharmacological tools: IUPHAR Review 11. Br J Pharmacol 2014; 171:4981-5010. [PMID: 25060293 PMCID: PMC4253452 DOI: 10.1111/bph.12848] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 05/22/2014] [Accepted: 06/13/2014] [Indexed: 02/06/2023] Open
Abstract
The properties of a cell are determined both genetically by the DNA sequence of its genes and epigenetically through processes that regulate the pattern, timing and magnitude of expression of its genes. While the genetic basis of disease has been a topic of intense study for decades, recent years have seen a dramatic increase in the understanding of epigenetic regulatory mechanisms and a growing appreciation that epigenetic misregulation makes a significant contribution to human disease. Several large protein families have been identified that act in different ways to control the expression of genes through epigenetic mechanisms. Many of these protein families are finally proving tractable for the development of small molecules that modulate their function and represent new target classes for drug discovery. Here, we provide an overview of some of the key epigenetic regulatory proteins and discuss progress towards the development of pharmacological tools for use in research and therapy.
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Affiliation(s)
- David F Tough
- Immuno-Inflammation Therapy Area, GlaxoSmithKline R&D, Medicines Research Centre, Epinova DPU, Stevenage, UK
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33
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Huang Q, Chang J, Cheung MK, Nong W, Li L, Lee MT, Kwan HS. Human proteins with target sites of multiple post-translational modification types are more prone to be involved in disease. J Proteome Res 2014; 13:2735-48. [PMID: 24754740 DOI: 10.1021/pr401019d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Many proteins can be modified by multiple types of post-translational modifications (Mtp-proteins). Although some post-translational modifications (PTMs) have recently been found to be associated with life-threatening diseases like cancers and neurodegenerative disorders, the underlying mechanisms remain enigmatic to date. In this study, we examined the relationship of human Mtp-proteins and disease and systematically characterized features of these proteins. Our results indicated that Mtp-proteins are significantly more inclined to participate in disease than proteins carrying no known PTM sites. Mtp-proteins were found significantly enriched in protein complexes, having more protein partners and preferred to act as hubs/superhubs in protein-protein interaction (PPI) networks. They possess a distinct functional focus, such as chromatin assembly or disassembly, and reside in biased, multiple subcellular localizations. Moreover, most Mtp-proteins harbor more intrinsically disordered regions than the others. Mtp-proteins carrying PTM types biased toward locating in the ordered regions were mainly related to protein-DNA complex assembly. Examination of the energetic effects of PTMs on the stability of PPI revealed that only a small fraction of single PTM events influence the binding energy of >2 kcal/mol, whereas the binding energy can change dramatically by combinations of multiple PTM types. Our work not only expands the understanding of Mtp-proteins but also discloses the potential ability of Mtp-proteins to act as key elements in disease development.
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Affiliation(s)
- Qianli Huang
- School of Life Sciences, The Chinese University of Hong Kong , Shatin, Hong Kong SAR 852000, China
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