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Rossi V, Nielson SE, Ortolano A, Lonardo I, Haroldsen E, Comer D, Price OM, Wallace N, Hevel JM. Oligomerization of protein arginine methyltransferase 1 and its effect on methyltransferase activity and substrate specificity. Protein Sci 2024; 33:e5118. [PMID: 39022984 PMCID: PMC11255602 DOI: 10.1002/pro.5118] [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: 04/04/2024] [Revised: 06/30/2024] [Accepted: 07/02/2024] [Indexed: 07/20/2024]
Abstract
Proper protein arginine methylation by protein arginine methyltransferase 1 (PRMT1) is critical for maintaining cellular health, while dysregulation is often associated with disease. How the activity of PRMT1 is regulated is therefore paramount, but is not clearly understood. Several studies have observed higher order oligomeric species of PRMT1, but it is unclear if these exist at physiological concentrations and there is confusion in the literature about how oligomerization affects activity. We therefore sought to determine which oligomeric species of PRMT1 are physiologically relevant, and quantitatively correlate activity with specific oligomer forms. Through quantitative western blotting, we determined that concentrations of PRMT1 available in a variety of human cell lines are in the sub-micromolar to low micromolar range. Isothermal spectral shift binding data were modeled to a monomer/dimer/tetramer equilibrium with an EC50 for tetramer dissociation of ~20 nM. A combination of sedimentation velocity and Native polyacrylamide gel electrophoresis experiments directly confirmed that the major oligomeric species of PRMT1 at physiological concentrations would be dimers and tetramers. Surprisingly, the methyltransferase activity of a dimeric PRMT1 variant is similar to wild type, tetrameric PRMT1 with some purified substrates, but dimer and tetramer forms of PRMT1 show differences in catalytic efficiencies and substrate specificity for other substrates. Our results define an oligomerization paradigm for PRMT1, show that the biophysical characteristics of PRMT1 are poised to support a monomer/dimer/tetramer equilibrium in vivo, and suggest that the oligomeric state of PRMT1 could be used to regulate substrate specificity.
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Affiliation(s)
- Vincent Rossi
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | - Sarah E. Nielson
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | - Ariana Ortolano
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | - Isabella Lonardo
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | - Emeline Haroldsen
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | - Drake Comer
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | - Owen M Price
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
| | | | - Joan M. Hevel
- Department of Chemistry and BiochemistryUtah State UniversityLoganUtahUSA
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2
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Zhang B, Guan Y, Zeng D, Wang R. Arginine methylation and respiratory disease. Transl Res 2024; 272:140-150. [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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3
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Mohany KM, Gamal Y, Abdel Raheem YF. Heavy metal levels are positively associated with serum periostin and miRNA-125b levels, but inversely associated with miRNA-26a levels in pediatric asthma cases. A case-control study. J Trace Elem Med Biol 2024; 82:127364. [PMID: 38104433 DOI: 10.1016/j.jtemb.2023.127364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 12/06/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
BACKGROUND The study investigated heavy metals levels [urinary cadmium (U-Cd), erythrocytic cadmium (E-Cd), urinary arsenic (U-As), and whole blood lead (WB-Pb)] in children with bronchial asthma (BA) and tested their associations with serum periostin, miRNA-125b and miRNA-26a levels, and with asthma severity clinically and laboratory [blood eosinophils count (BEC) and serum total immunoglobin E (IgE)]. Also, we tested cut-off points, for the studied parameters, to distinguish BA cases from healthy children. METHODS This case-control study included 158 children divided into control group; n = 72 and BA group; n = 86. Heavy metals were measured by an inductively coupled plasma-optical emission spectrophotometer. Serum periostin and IgE levels were measured by their corresponding ELISA kits. miRNAs relative expressions were estimated by RT-qPCR using the 2-ΔΔCT method. RESULTS Heavy metals, serum periostin, and miR-125b levels were significantly high in BA group (p < 0.001). Heavy metals levels correlated positively with serum periostin, miR-125b and IgE levels, BEC, and asthma severity. The reverse was observed regarding serum miR-26a levels. Receiver operating characteristics (ROC) curve analysis showed good to excellent abilities of U-Cd, E-Cd, U-As, WB-Pb, serum periostin, miRNA-125b, and miRNA - 26a, and total IgE levels to distinguish BA cases from healthy children. CONCLUSIONS Heavy metal toxicity in children is associated with BA severity, increased serum periostin and miRNA-125b levels, and decreased miRNA-26a levels. Specific measures to reduce children's exposure to heavy metals should be taken. Future research should consider blocking miRNA-125b action or enhancing miRNA-26a action to manage BA cases.
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Affiliation(s)
- Khalid M Mohany
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Assiut University, Assiut 71515, Egypt.
| | - Yasser Gamal
- Department of Pediatrics, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
| | - Yaser F Abdel Raheem
- Department of Pediatrics, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
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4
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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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5
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Liu Y, Liu H, Ye M, Jiang M, Chen X, Song G, Ji H, Wang ZW, Zhu X. Methylation of BRD4 by PRMT1 regulates BRD4 phosphorylation and promotes ovarian cancer invasion. Cell Death Dis 2023; 14:624. [PMID: 37737256 PMCID: PMC10517134 DOI: 10.1038/s41419-023-06149-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 09/04/2023] [Accepted: 09/12/2023] [Indexed: 09/23/2023]
Abstract
Bromodomain-containing protein 4 (BRD4), the major component of bromodomain and extra-terminal domain (BET) protein family, has important functions in early embryonic development and cancer development. However, the posttranslational modification of BRD4 is not well understood. Multiple approaches were used to explore the mechanism of PRMT1-mediated BRD4 methylation and to determine the biological functions of BRD4 and PRMT1 in ovarian cancer. Here we report that BRD4 is asymmetrically methylated at R179/181/183 by PRMT1, which is antagonized by the Jumonji-family demethylase, JMJD6. PRMT1 is overexpressed in ovarian cancer tissue and is a potential marker for poor prognosis in ovarian cancer patients. Silencing of PRMT1 inhibited ovarian cancer proliferation, migration, and invasion in vivo and in vitro. PRMT1-mediated BRD4 methylation was found to promote BRD4 phosphorylation. Compared to BRD4 wild-type (WT) cells, BRD4 R179/181/183K mutant-expressing cells showed reduced ovarian cancer metastasis. BRD4 arginine methylation is also associated with TGF-β signaling. Our results indicate that arginine methylation of BRD4 by PRMT1 is involved in ovarian cancer tumorigenesis. Targeting PRMT1-mediated arginine methylation may provide a novel diagnostic target and an effective therapeutic strategy for ovarian cancer treatment.
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Affiliation(s)
- Yi Liu
- Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology, Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 325027, Wenzhou, China
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Hejing Liu
- Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology, Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 325027, Wenzhou, China
| | - Miaomiao Ye
- Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology, Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 325027, Wenzhou, China
| | - Mengying Jiang
- Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology, Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 325027, Wenzhou, China
| | - Xin Chen
- Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology, Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 325027, Wenzhou, China
| | - Gendi Song
- Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology, Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 325027, Wenzhou, China
| | - Huihui Ji
- Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology, Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 325027, Wenzhou, China
| | - Zhi-Wei Wang
- Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology, Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 325027, Wenzhou, China.
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Xueqiong Zhu
- Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology, Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, 325027, Wenzhou, China.
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6
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Xiao B, Li L, Yao D, Mo B. Noncoding RNAs in asthmatic airway smooth muscle cells. Eur Respir Rev 2023; 32:32/168/220184. [PMID: 37076176 PMCID: PMC10113956 DOI: 10.1183/16000617.0184-2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 02/07/2023] [Indexed: 04/21/2023] Open
Abstract
Asthma is a complex and heterogeneous airway disease caused by genetic, environmental and epigenetic factors treated with hormones and biologics. Irreversible pathological changes to airway smooth muscle cells (ASMCs) such as hyperplasia and hypertrophy can occur in asthmatic patients. Determining the mechanisms responsible is vital for preventing such changes. In recent years, noncoding RNAs (ncRNAs), especially microRNAs, long noncoding RNAs and circular RNAs, have been found to be associated with abnormalities of the ASMCs. This review highlights recent ncRNA research into ASMC pathologies. We present a schematic that illustrates the role of ncRNAs in pathophysiological changes to ASMCs that may be useful in future research in diagnostic and treatment strategies for patients with asthma.
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Affiliation(s)
- Bo Xiao
- Laboratory of Respiratory Disease, Affiliated Hospital of Guilin Medical University, Guilin, China
- Key Laboratory of Respiratory Diseases, Education Department of Guangxi Zhuang Autonomous Region, Guilin, China
- These authors contributed equally to this work
| | - Liangxian Li
- Guangxi Key Laboratory of Brain and Cognitive Neuroscience, Guilin Medical University, Guilin, China
- These authors contributed equally to this work
| | - Dong Yao
- Key Laboratory of Respiratory Diseases, Education Department of Guangxi Zhuang Autonomous Region, Guilin, China
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
- These authors contributed equally to this work
| | - Biwen Mo
- Key Laboratory of Respiratory Diseases, Education Department of Guangxi Zhuang Autonomous Region, Guilin, China
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
- Key Laboratory of Glucose and Lipid Metabolism Disorders, Guangxi Health Commission, Guilin, China
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7
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Advances and Highlights of miRNAs in Asthma: Biomarkers for Diagnosis and Treatment. Int J Mol Sci 2023; 24:ijms24021628. [PMID: 36675145 PMCID: PMC9862966 DOI: 10.3390/ijms24021628] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
Asthma is a heterogeneous inflammatory disease of the airways that causes breathing difficulties, episodes of cough and wheezing, and in more severe cases can greatly diminish quality of life. Epigenetic regulation, including post-transcriptional mediation of microRNAs (miRNAs), is one of the mechanisms behind the development of the range of asthma phenotypes and endotypes. As in every other immune-mediated disease, miRNAs regulate the behavior of cells that shape the airway structure as well as those in charge of the defense mechanisms in the bronchi and lungs, controlling cell survival, growth, proliferation, and the ability of cells to synthesize and secrete chemokines and immune mediators. More importantly, miRNAs are molecules with chemical and biological properties that make them appropriate biomarkers for disease, enabling stratification of patients for optimal drug selection and thereby simplifying clinical management and reducing both the economic burden and need for critical care associated with the disease. In this review, we summarize the roles of miRNAs in asthma and describe how they regulate the mechanisms of the disease. We further describe the current state of miRNAs as biomarkers for asthma phenotyping, endotyping, and treatment selection.
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8
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Weidner J, Malmhäll C, Arabkari V, Barrett A, Boberg E, Ekerljung L, Rådinger M. The Serum/Glucocorticoid-Regulated Kinase 1 Is Targeted by miR-19a in CD4+ T Cells. Cells 2022; 12:cells12010133. [PMID: 36611927 PMCID: PMC9818172 DOI: 10.3390/cells12010133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 12/19/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022] Open
Abstract
The polarization of CD4+ T cells into different T helper subsets is an important process in many diseases, including asthma. Part of the adaptive immune system, T cells are responsible for propagating signals to alert and prime the immune system. MicroRNAs (miRNAs) are small non-coding RNAs that act on numerous targets in the cell to regulate a variety of cellular processes, including roles in T cell polarization. In this study, we aimed to identify genes dysregulated in peripheral blood mononuclear cells from individuals with asthma. Moreover, we sought to examine miRNAs that may regulate the candidate genes and explore their functional relationship. Utilizing a focused gene array, we identified the serum/glucocorticoid-regulated kinase 1 (SGK1) gene to be upregulated in circulating peripheral blood mononuclear cells, which included T cells, from individuals with asthma. Several miRNAs were bioinformatically identified to target SGK1, but miR-19a was the only screened candidate that negatively correlated to SGK1 expression. Further analysis of the miR-19a-SGK1 relationship showed a negative correlation in CD4+ T cells in situ and direct binding in vitro during T cell activation. Moreover, we observed a negative correlation of miR-19a and SGK1 during early type 2 polarization of CD4+ naïve human T cells. Thus, we suggest that miR-19a has a role in binding and regulating SGK1 transcript levels during T cell development.
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9
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Maggi E, Parronchi P, Azzarone BG, Moretta L. A pathogenic integrated view explaining the different endotypes of asthma and allergic disorders. Allergy 2022; 77:3267-3292. [PMID: 35842745 DOI: 10.1111/all.15445] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 07/08/2022] [Accepted: 07/13/2022] [Indexed: 01/28/2023]
Abstract
The inflammation of allergic diseases is characterized by a complex interaction between type 2 and type 3 immune responses, explaining clinical symptoms and histopathological patterns. Airborne stimuli activate the mucosal epithelium to release a number of molecules impacting the activity of resident immune and environmental cells. Signals from the mucosal barrier, regulatory cells, and the inflamed tissue are crucial conditions able to modify innate and adaptive effector cells providing the selective homing of eosinophils or neutrophils. The high plasticity of resident T- and innate lymphoid cells responding to external signals is the prerequisite to explain the multiplicity of endotypes of allergic diseases. This notion paved the way for the huge use of specific biologic drugs interfering with pathogenic mechanisms of inflammation. Based on the response of the epithelial barrier, the activity of resident regulatory cells, and functions of structural non-lymphoid environmental cells, this review proposes some immunopathogenic scenarios characterizing the principal endotypes which can be associated with a precise phenotype of asthma. Recent literature indicates that similar concepts can also be applied to the inflammation of other non-respiratory allergic disorders. The next challenges will consist in defining specific biomarker(s) of each endotype allowing for a quick diagnosis and the most effective personalized therapy.
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Affiliation(s)
- Enrico Maggi
- Department of Immunology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Paola Parronchi
- Department of Clinical and Experimental Medicine, University of Florence, Florence, Italy
| | | | - Lorenzo Moretta
- Department of Immunology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
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The Role of Noncoding RNA in Airway Allergic Diseases through Regulation of T Cell Subsets. Mediators Inflamm 2022; 2022:6125698. [PMID: 36248190 PMCID: PMC9553461 DOI: 10.1155/2022/6125698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/31/2022] [Accepted: 09/23/2022] [Indexed: 11/18/2022] Open
Abstract
Allergic rhinitis and asthma are common airway allergic diseases, the incidence of which has increased annually in recent years. The human body is frequently exposed to allergens and environmental irritants that trigger immune and inflammatory responses, resulting in altered gene expression. Mounting evidence suggested that epigenetic alterations were strongly associated with the progression and severity of allergic diseases. Noncoding RNAs (ncRNAs) are a class of transcribed RNA molecules that cannot be translated into polypeptides and consist of three major categories, microRNAs (miRNAs), long noncoding RNAs (lncRNAs), and circular RNAs (circRNAs). Previous studies showed that ncRNAs were involved in the physiopathological mechanisms of airway allergic diseases and contributed to their occurrence and development. This article reviews the current state of understanding of the role of noncoding RNAs in airway allergic diseases, highlights the limitations of recent studies, and outlines the prospects for further research to facilitate the clinical translation of noncoding RNAs as therapeutic targets and biomarkers.
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Farmanzadeh A, Qujeq D, Yousefi T. The Interaction Network of MicroRNAs with Cytokines and Signaling Pathways in Allergic Asthma. Microrna 2022; 11:104-117. [PMID: 35507792 DOI: 10.2174/2211536611666220428134324] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 01/15/2022] [Accepted: 03/10/2022] [Indexed: 01/01/2023]
Abstract
Allergic asthma is a complicated disease that is affected by many factors. Numerous cytokines and signaling pathways are attributed to the cause of asthma symptoms. MicroRNAs (miRNAs) are a group of small non-coding single-stranded RNA molecules that are involved in gene silencing and posttranscriptional regulation of gene expression by targeting mRNAs. In pathological conditions, altered expression of microRNAs differentially regulates cytokines and signaling pathways and therefore, can be the underlying reason for the pathogenesis of allergic asthma. Indeed, microRNAs participate in airway inflammation via inducing airway structural cells and activating immune responses by targeting cytokines and signaling pathways. Thus, to make a complete understanding of allergic asthma, it is necessary to investigate the communication network of microRNAs with cytokines and signaling pathways which is contributed to the pathogenesis of allergic asthma. Here, we shed light on this aspect of asthma pathology by Summarizing our current knowledge of this topic.
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Affiliation(s)
- Ali Farmanzadeh
- Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Durdi Qujeq
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran.,Department of Clinical Biochemistry, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Tooba Yousefi
- Department of Clinical Biochemistry, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
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12
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Role of Respiratory Epithelial Cells in Allergic Diseases. Cells 2022; 11:cells11091387. [PMID: 35563693 PMCID: PMC9105716 DOI: 10.3390/cells11091387] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/11/2022] [Accepted: 04/19/2022] [Indexed: 02/07/2023] Open
Abstract
The airway epithelium provides the first line of defense to the surrounding environment. However, dysfunctions of this physical barrier are frequently observed in allergic diseases, which are tightly connected with pro- or anti-inflammatory processes. When the epithelial cells are confronted with allergens or pathogens, specific response mechanisms are set in motion, which in homeostasis, lead to the elimination of the invaders and leave permanent traces on the respiratory epithelium. However, allergens can also cause damage in the sensitized organism, which can be ascribed to the excessive immune reactions. The tight interaction of epithelial cells of the upper and lower airways with local and systemic immune cells can leave an imprint that may mirror the pathophysiology. The interaction with effector T cells, along with the macrophages, play an important role in this response, as reflected in the gene expression profiles (transcriptomes) of the epithelial cells, as well as in the secretory pattern (secretomes). Further, the storage of information from past exposures as memories within discrete cell types may allow a tissue to inform and fundamentally alter its future responses. Recently, several lines of evidence have highlighted the contributions from myeloid cells, lymphoid cells, stromal cells, mast cells, and epithelial cells to the emerging concepts of inflammatory memory and trained immunity.
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13
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Qian L, Mehrabi Nasab E, Athari SM, Athari SS. Mitochondria signaling pathways in allergic asthma. J Investig Med 2022; 70:863-882. [PMID: 35168999 PMCID: PMC9016245 DOI: 10.1136/jim-2021-002098] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/05/2021] [Indexed: 12/23/2022]
Abstract
Mitochondria, as the powerhouse organelle of cells, are greatly involved in regulating cell signaling pathways, including those related to the innate and acquired immune systems, cellular differentiation, growth, death, apoptosis, and autophagy as well as hypoxic stress responses in various diseases. Asthma is a chronic complicated airway disease characterized by airway hyperresponsiveness, eosinophilic inflammation, mucus hypersecretion, and remodeling of airway. The asthma mortality and morbidity rates have increased worldwide, so understanding the molecular mechanisms underlying asthma progression is necessary for new anti-asthma drug development. The lung is an oxygen-rich organ, and mitochondria, by sensing and processing O2, contribute to the generation of ROS and activation of pro-inflammatory signaling pathways. Asthma pathophysiology has been tightly associated with mitochondrial dysfunction leading to reduced ATP synthase activity, increased oxidative stress, apoptosis induction, and abnormal calcium homeostasis. Defects of the mitochondrial play an essential role in the pro-remodeling mechanisms of lung fibrosis and airway cells’ apoptosis. Identification of mitochondrial therapeutic targets can help repair mitochondrial biogenesis and dysfunction and reverse related pathological changes and lung structural remodeling in asthma. Therefore, we here overviewed the relationship between mitochondrial signaling pathways and asthma pathogenic mechanisms.
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Affiliation(s)
- Ling Qian
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Shanghai, China
| | - Entezar Mehrabi Nasab
- Department of Cardiology, Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran (the Islamic Republic of)
| | | | - Seyyed Shamsadin Athari
- Department of Immunology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran (the Islamic Republic of)
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Fang L, Roth M. Airway Wall Remodeling in Childhood Asthma-A Personalized Perspective from Cell Type-Specific Biology. J Pers Med 2021; 11:jpm11111229. [PMID: 34834581 PMCID: PMC8625708 DOI: 10.3390/jpm11111229] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/12/2021] [Accepted: 11/17/2021] [Indexed: 12/16/2022] Open
Abstract
Airway wall remodeling is a pathology occurring in chronic inflammatory lung diseases including asthma, chronic obstructive pulmonary disease, and fibrosis. In 2017, the American Thoracic Society released a research statement highlighting the gaps in knowledge and understanding of airway wall remodeling. The four major challenges addressed in this statement were: (i) the lack of consensus to define “airway wall remodeling” in different diseases, (ii) methodologic limitations and inappropriate models, (iii) the lack of anti-remodeling therapies, and (iv) the difficulty to define endpoints and outcomes in relevant studies. This review focuses on the importance of cell-cell interaction, especially the bronchial epithelium, in asthma-associated airway wall remodeling. The pathology of “airway wall remodeling” summarizes all structural changes of the airway wall without differentiating between different pheno- or endo-types of asthma. Indicators of airway wall remodeling have been reported in childhood asthma in the absence of any sign of inflammation; thus, the initiation event remains unknown. Recent studies have implied that the interaction between the epithelium with immune cells and sub-epithelial mesenchymal cells is modified in asthma by a yet unknown epigenetic mechanism during early childhood.
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Chupp G, Kline JN, Khatri SB, McEvoy C, Silvestri GA, Shifren A, Castro M, Bansal S, McClelland M, Dransfield M, Trevor J, Kahlstrom N, Simoff M, Wahidi MM, Lamb CR, Ferguson JS, Haas A, Hogarth DK, Tejedor R, Toth J, Hey J, Majid A, LaCamera P, FitzGerald JM, Enfield K, Grubb GM, McMullen EA, Olson JL, Laviolette M. Bronchial Thermoplasty in Severe Asthmatics At 5 Years: The PAS2 Study. Chest 2021; 161:614-628. [PMID: 34774528 DOI: 10.1016/j.chest.2021.10.044] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/07/2021] [Accepted: 10/12/2021] [Indexed: 10/19/2022] Open
Abstract
BACKGROUND Bronchial thermoplasty is a device-based treatment for subjects ≥18 years with severe asthma poorly controlled with inhaled corticosteroids and long-acting beta-agonists. The Post-FDA Approval Clinical Trial Evaluating Bronchial Thermoplasty in Severe Persistent Asthma (PAS2) study collected data on severe asthmatics undergoing this procedure. RESEARCH QUESTION What are the 5-year efficacy and safety results in severe asthmatics who have undergone bronchial thermoplasty? STUDY DESIGN AND METHODS This was a prospective, open-label, observational, multi-center study conducted in the United States and Canada. Subjects aged 18-65, taking inhaled corticosteroids ≥1000μg/day (beclomethasone or equivalent) and long-acting β-agonists ≥80μg/day (salmeterol or equivalent) were included. Severe exacerbations, hospitalization, emergency department visits, and medication usage were evaluated for the 12 months prior to and at years 1-5 post-treatment. Spirometry was evaluated at baseline and at years 1-5 post-treatment. RESULTS 284 subjects were enrolled at 27 centers; 227 subjects (80%) completed 5 years of follow-up. By year 5 post-treatment, the proportion of subjects with severe exacerbations, emergency department visits, and hospitalizations was 42.7%, 7.9%, and 4.8%, respectively, compared to 77.8%, 29.4%, and 16.1% in the 12 months prior to treatment. The proportion of subjects on maintenance oral corticosteroids decreased from 19.4% at baseline to 9.7% at 5 years. Analyses of subgroups based on baseline clinical and biomarker characteristics revealed a statistically significant clinical improvement among all subgroups. INTERPRETATION Five years after treatment, subjects experienced decreases in severe exacerbations, hospitalizations, emergency department visits and corticosteroid exposure. All subgroups demonstrated clinically significant improvement, suggesting that bronchial thermoplasty improves asthma control in different asthma phenotypes.
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Affiliation(s)
| | - Joel N Kline
- University of Iowa Hospitals and Clinics - Iowa City, IA/US
| | | | | | | | - Adrian Shifren
- Washington University School of Medicine - St. Louis, MO/US
| | - Mario Castro
- University of Kansas School of Medicine, Kansas City, KS
| | | | | | | | | | | | | | | | - Carla R Lamb
- Lahey Hospital and Medical Center - Burlington, MA/US
| | | | - Andrew Haas
- University of Pennsylvania - Philadelphia, PA/US
| | | | | | | | - Jamie Hey
- Pulmonary Associates of Richmond - Richmond, VA/US
| | - Adnan Majid
- Beth Israel Deaconess Medical Center - Boston, MA/US
| | - Peter LaCamera
- St. Elizabeth's Medical Center of Boston, Inc. - Boston, MA/US
| | | | - Kyle Enfield
- University of Virginia Health System - Charlottesville, VA/US
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16
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IPF-Fibroblast Erk1/2 Activity Is Independent from microRNA Cluster 17-92 but Can Be Inhibited by Treprostinil through DUSP1. Cells 2021; 10:cells10112836. [PMID: 34831059 PMCID: PMC8616195 DOI: 10.3390/cells10112836] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 01/25/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive terminal lung disease, and therapies aim to block fibrosis. Fibroblast proliferation is controlled by C/EBP-β, microRNA cluster 17-92 (miR17-92), and Erk1/2 mitogen-activated protein kinase. This study assessed the role of miR17-92 in IPF-fibroblast proliferation and its modification by treprostinil. Fibroblasts were isolated from eight IPF patients, five interstitial lung fibrosis patients, and seven control lungs. Fibroblasts were stimulated with TGF-β1 over 24 h. The miR17-92 expression was analyzed by RT-qPCR, and protein expression by Western blotting. TGF-β1 upregulated C/EBP-β in all fibroblasts, which was reduced by treprostinil in control-fibroblasts, but not in IPF-fibroblasts. Compared to controls, the guide strands miR-19a-3p, miR-19b-3p, miR-20a-5p, and miR-92a-3p, as well as the passenger strands miR-17-3p, miR-18-3p, miR-19a-1-5p, and miR-92a-5p were significantly increased in IPF-fibroblasts. In controls, TGF-β1 and treprostinil significantly reduced specific miR17-92 members. IPF-fibroblast proliferation was inhibited by treprostinil through increased expression of the Erk1/2 inhibitor DUSP1. These data suggest that proliferation control via miR17-92 and C/EBP-β is disrupted in IPF-fibroblasts. Therefore, the inhibition of early stages of signaling cascades or specific mitogen receptors might be less effective. However, the increased proliferation is sensitive to Erk1/2 inhibition by treprostinil-induced DUSP1.
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17
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Zhang XY, Chen ZC, Li N, Wang ZH, Guo YL, Tian CJ, Cheng DJ, Tang XY, Zhang LX. Exosomal transfer of activated neutrophil-derived lncRNA CRNDE promotes proliferation and migration of airway smooth muscle cells in asthma. Hum Mol Genet 2021; 31:638-650. [PMID: 34590683 DOI: 10.1093/hmg/ddab283] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/06/2021] [Accepted: 09/20/2021] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Activated neutrophil-derived exosomes reportedly contribute to the proliferation of airway smooth muscle cells (ASMCs), thereby aggravating the airway wall remodeling during asthma; however, the specific mechanism remains unclear. METHODS Lipopolysaccharide (LPS)-EXO and si-CRNDE-EXO were extracted from the media of human neutrophils treated with LPS and LPS + si-CRNDE (a siRNA targets long non-coding RNA CRNDE), respectively. Human ASMCs were co-cultured with LPS-EXO or si-CRNDE-EXO, and cell viability, proliferation, and migration were measured. The interplay of CRNDE, inhibitor of nuclear factor kappa B kinase subunit beta (IKKβ), and nuclear receptor subfamily 2 group C member 2 (TAK1) was explored using RNA immunoprecipitation (RIP) and Co-IP assays. A mouse model of asthma was induced using ovalbumin. RESULTS CRNDE was upregulated in LPS-EXO and successfully transferred from LPS-treated neutrophils to ASMCs through exosome. Mechanically, CRNDE loaded in LPS-EXO reinforced TAK1-mediated IKKβ phosphorylation, thereby activating the nuclear factor kappa B (NF-κB) pathway. Functionally, silencing CRNDE in LPS-EXO, an IKKβ inhibitor, and an NF-κB inhibitor all removed the upregulation of cell viability, proliferation, and migration induced by LPS-EXO in ASMCs. In the end, the in vivo experiment demonstrated that CRNDE knockdown in neutrophils effectively reduced the thickness of bronchial smooth muscle in a mouse model for asthma. CONCLUSION Activated neutrophils-derived CRNDE was transferred to ASMCs through exosomes and activated the NF-κB pathway by enhancing IKKβ phosphorylation. The latter promoted the proliferation and migration of ASMCs and then contributed to airway remodeling in asthma.
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Affiliation(s)
- Xiao-Yu Zhang
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital.,Department of Respiratory Disease and Intensive Care, People's Hospital Affiliated to Zhengzhou University
| | - Zhuo-Chang Chen
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital.,Department of Respiratory Disease and Intensive Care, People's Hospital Affiliated to Zhengzhou University
| | - Nan Li
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital.,Department of Respiratory Disease and Intensive Care, People's Hospital Affiliated to Zhengzhou University
| | - Zhi-Hua Wang
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital.,Department of Respiratory Disease and Intensive Care, People's Hospital Affiliated to Zhengzhou University
| | - Ya-Li Guo
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital.,Department of Respiratory Disease and Intensive Care, People's Hospital Affiliated to Zhengzhou University
| | - Cui-Jie Tian
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital.,Department of Respiratory Disease and Intensive Care, People's Hospital Affiliated to Zhengzhou University
| | - Dong-Jun Cheng
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital.,Department of Respiratory Disease and Intensive Care, People's Hospital Affiliated to Zhengzhou University
| | - Xue-Yi Tang
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital.,Department of Respiratory Disease and Intensive Care, People's Hospital Affiliated to Zhengzhou University
| | - Luo-Xian Zhang
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital.,Department of Respiratory Disease and Intensive Care, People's Hospital Affiliated to Zhengzhou University
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18
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Role of Epigenetics in the Pathogenesis, Treatment, Prediction, and Cellular Transformation of Asthma. Mediators Inflamm 2021; 2021:9412929. [PMID: 34566492 PMCID: PMC8457970 DOI: 10.1155/2021/9412929] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 08/27/2021] [Indexed: 12/15/2022] Open
Abstract
Asthma is a mysterious disease with heterogeneity in etiology, pathogenesis, and clinical phenotypes. Although ongoing studies have provided a better understanding of asthma, its natural history, progression, pathogenesis, diversified phenotypes, and even the exact epigenetic linkage between childhood asthma and adult-onset/old age asthma remain elusive in many aspects. Asthma heritability has been established through genetic studies, but genetics is not the only influencing factor in asthma. The increasing incidence and some unsolved queries suggest that there may be other elements related to asthma heredity. Epigenetic mechanisms link genetic and environmental factors with developmental trajectories in asthma. This review provides an overview of asthma epigenetics and its components, including several epigenetic studies on asthma, and discusses the epigenetic linkage between childhood asthma and adult-onset/old age asthma. Studies involving asthma epigenetics present valuable novel approaches to solve issues related to asthma. Asthma epigenetic research guides us towards gene therapy and personalized T cell therapy, directs the discovery of new therapeutic agents, predicts long-term outcomes in severe cases, and is also involved in the cellular transformation of childhood asthma to adult-onset/old age asthma.
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The Role of miRNAs in Extracellular Matrix Repair and Chronic Fibrotic Lung Diseases. Cells 2021; 10:cells10071706. [PMID: 34359876 PMCID: PMC8304879 DOI: 10.3390/cells10071706] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 12/11/2022] Open
Abstract
The lung extracellular matrix (ECM) plays a key role in the normal architecture of the lung, from embryonic lung development to mechanical stability and elastic recoil of the breathing adult lung. The lung ECM can modulate the biophysical environment of cells through ECM stiffness, porosity, topography and insolubility. In a reciprocal interaction, lung ECM dynamics result from the synthesis, degradation and organization of ECM components by the surrounding structural and immune cells. Repeated lung injury and repair can trigger a vicious cycle of aberrant ECM protein deposition, accompanied by elevated ECM stiffness, which has a lasting effect on cell and tissue function. The processes governing the resolution of injury repair are regulated by several pathways; however, in chronic lung diseases such as asthma, chronic obstructive pulmonary disease (COPD) and idiopathic pulmonary disease (IPF) these processes are compromised, resulting in impaired cell function and ECM remodeling. Current estimates show that more than 60% of the human coding transcripts are regulated by miRNAs. miRNAs are small non-coding RNAs that regulate gene expressions and modulate cellular functions. This review is focused on the current knowledge of miRNAs in regulating ECM synthesis, degradation and topography by cells and their dysregulation in asthma, COPD and IPF.
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20
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TSLP-induced collagen type-I synthesis through STAT3 and PRMT1 is sensitive to calcitriol in human lung fibroblasts. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2021; 1868:119083. [PMID: 34147561 DOI: 10.1016/j.bbamcr.2021.119083] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/15/2021] [Accepted: 06/15/2021] [Indexed: 12/12/2022]
Abstract
Airway wall remodeling, a main pathology of asthma was linked to vitamin-D deficiency and protein arginine methyltransferase-1 (PRMT1) expression in sub-epithelial cell layers. Calcitriol reduced remodeling in asthma model, but its mode of action is unclear. This study assessed the effect of calcitriol on PRMT1-dependent fibroblast remodeling in human lung fibroblasts, and allergen-induced asthma in E3-rats. Fibroblasts were activated with thymic stromal lymphopoietin (TLSP); asthma was induced by ovalbumin inhalation in rats. The airway structure was assessed by immunohistology. Protein expression in fibroblasts and activation of the mitogen activated protein kinases were detected by Western-blotting. Transcription factor activation was determined by luciferase reporter assay. PRMT1 action was blocked by siRNA and PRMT-inhibition. Ovalbumin upregulated the expression of TSLP, PRMT1, matrix metallopro-teinase-1 (MMP1), interleukin-25, and collagen type-I in sub-epithelial fibroblasts. In isolated fibroblasts, TSLP induced the same proteins, which were blocked by inhibition of Erk1/2 and p38. TLSP induced PRMT1 through activation of signal transducer and activator of transcription-3. PRMT1 inhibition reduced collagen type-I expression and suppressed MMP1. In fibroblasts, calcitriol supplementation over 12 days prevented TSLP-induced remodeling by blocking the PRMT1 levels. Interestingly, short-term calcitriol treatment had no such effect. The data support the beneficial role of calcitriol in asthma therapy.
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21
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Weidner J, Bartel S, Kılıç A, Zissler UM, Renz H, Schwarze J, Schmidt‐Weber CB, Maes T, Rebane A, Krauss‐Etschmann S, Rådinger M. Spotlight on microRNAs in allergy and asthma. Allergy 2021; 76:1661-1678. [PMID: 33128813 PMCID: PMC8246745 DOI: 10.1111/all.14646] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 10/16/2020] [Accepted: 10/25/2020] [Indexed: 12/14/2022]
Abstract
In past 10 years, microRNAs (miRNAs) have gained scientific attention due to their importance in the pathophysiology of allergic diseases and their potential as biomarkers in liquid biopsies. They act as master post‐transcriptional regulators that control most cellular processes. As one miRNA can target several mRNAs, often within the same pathway, dysregulated expression of miRNAs may alter particular cellular responses and contribute, or lead, to the development of various diseases. In this review, we give an overview of the current research on miRNAs in allergic diseases, including atopic dermatitis, allergic rhinitis, and asthma. Specifically, we discuss how individual miRNAs function in the regulation of immune responses in epithelial cells and specialized immune cells in response to different environmental factors and respiratory viruses. In addition, we review insights obtained from experiments with murine models of allergic airway and skin inflammation and offer an overview of studies focusing on miRNA discovery using profiling techniques and bioinformatic modeling of the network effect of multiple miRNAs. In conclusion, we highlight the importance of research into miRNA function in allergy and asthma to improve our knowledge of the molecular mechanisms involved in the pathogenesis of this heterogeneous group of diseases.
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Affiliation(s)
- Julie Weidner
- Department of Internal Medicine and Clinical Nutrition Krefting Research Centre Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | - Sabine Bartel
- Department of Pathology and Medical Biology GRIAC Research Institute University Medical Center Groningen University of Groningen Groningen The Netherlands
| | - Ayse Kılıç
- Channing Division of Network Medicine Brigham and Women's Hospital Boston MA USA
| | - Ulrich M. Zissler
- Center for Allergy and Environment (ZAUM) Technical University of Munich and Helmholtz Center MunichGerman Research Center for Environmental Health Munich Germany
| | - Harald Renz
- Institut für Laboratoriumsmedizin und Pathobiochemie Philipps University of Marburg Marburg Germany
| | - Jürgen Schwarze
- Centre for Inflammation Research The University of Edinburgh Edinburgh UK
| | - Carsten B. Schmidt‐Weber
- Center for Allergy and Environment (ZAUM) Technical University of Munich and Helmholtz Center MunichGerman Research Center for Environmental Health Munich Germany
| | - Tania Maes
- Department of Respiratory Medicine Ghent University Ghent Belgium
| | - Ana Rebane
- Institute of Biomedicine and Translational Medicine University of Tartu Tartu Estonia
| | - Susanne Krauss‐Etschmann
- Research Center Borstel Borstel Germany
- Institute of Experimental Medicine Christian‐Albrechts University Kiel Kiel Germany
| | - Madeleine Rådinger
- Department of Internal Medicine and Clinical Nutrition Krefting Research Centre Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
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22
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Park JY, Choi JH, Lee SN, Cho HJ, Ahn JS, Kim YB, Park DY, Park SC, Kim SI, Kang MJ, Jang AR, Ahn JH, Lee TS, Kim DY, Shin SJ, Yoon JH, Park JH. Protein arginine methyltransferase 1 contributes to the development of allergic rhinitis by promoting the production of epithelial-derived cytokines. J Allergy Clin Immunol 2021; 147:1720-1731. [PMID: 33476674 DOI: 10.1016/j.jaci.2020.12.646] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 11/05/2020] [Accepted: 12/08/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND Arginine methylation is a posttranslational modification mediated by protein arginine methyltransferases (PRMTs). Although previous studies have shown that PRMT1 contributes to the severity of allergic airway inflammation or asthma, the underlying mechanism is poorly understood. OBJECTIVE This study aimed to explore the role of PRMT1 and its relevant mechanism in the development of allergic rhinitis (AR). METHODS The expression levels of PRMTs and cytokines were determined by RT-PCR, and the localization of PRMT1 was determined by immunohistochemistry and confocal microscopy. The levels of house dust mite (HDM)-specific immunoglobulins in serum and of cytokines in nasal lavage fluids were determined by ELISA. PRMT1 inhibition was achieved by siRNA and treatment with the pan PRMT inhibitor arginine N-methyltransferase inhibitor-1. RESULTS PRMT1 expression was significantly increased in the nasal mucosa of patients and mice with AR. The degree of eosinophilic infiltration in the nasal mucosa was reduced in PRMT1+/- AR mice compared with wild-type mice. PRMT1 haploinsufficiency reduced the levels of HDM-specific immunoglobulins in serum and those of TH2 (IL-4, IL-5, and IL-13) and epithelial (thymic stromal lymphopoietin [TSLP], IL-25, and IL-33) cytokines in the nasal lavage fluids of AR mice. In nasal epithelial cells, HDM and IL-4 cooperate to enhance PRMT1 expression through a mitogen-activated protein kinase-dependent pathway. In addition, PRMT1 was essential for the production of TSLP, IL-25, and IL-33 in response to HDM and IL-4. Arginine N-methyltransferase inhibitor-1 treatment alleviated AR in the mouse model. CONCLUSIONS PRMT1 plays an important role in AR development by regulating epithelial-derived cytokine production and might be a new therapeutic target for AR.
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Affiliation(s)
- Ji-Yeon Park
- Laboratory Animal Medicine, College of Veterinary Medicine and Animal Medical Institute, Chonnam National University, Gwangju, Korea
| | - Joo-Hee Choi
- Laboratory Animal Medicine, College of Veterinary Medicine and Animal Medical Institute, Chonnam National University, Gwangju, Korea
| | - Sang-Nam Lee
- Airway Mucus Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Hyung-Ju Cho
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Ji-Suk Ahn
- Airway Mucus Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Yong-Bum Kim
- Center for Nonclinical Studies, Korea Institute of Toxicology, Daejeon, Korea
| | - Do-Yong Park
- Center for Nonclinical Studies, Korea Institute of Toxicology, Daejeon, Korea
| | - Sang Chul Park
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea; Department of Otorhinolaryngology-Head and Neck Surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Soo-In Kim
- Research Center for Human Natural Defense System, Yonsei University College of Medicine, Seoul, Korea
| | - Min-Jung Kang
- Laboratory Animal Medicine, College of Veterinary Medicine and Animal Medical Institute, Chonnam National University, Gwangju, Korea
| | - Ah-Ra Jang
- Laboratory Animal Medicine, College of Veterinary Medicine and Animal Medical Institute, Chonnam National University, Gwangju, Korea
| | - Jae-Hun Ahn
- Laboratory Animal Medicine, College of Veterinary Medicine and Animal Medical Institute, Chonnam National University, Gwangju, Korea
| | - Tae-Sung Lee
- Laboratory Animal Medicine, College of Veterinary Medicine and Animal Medical Institute, Chonnam National University, Gwangju, Korea
| | - Dong-Yeon Kim
- Laboratory Animal Medicine, College of Veterinary Medicine and Animal Medical Institute, Chonnam National University, Gwangju, Korea
| | - Sung Jae Shin
- Department of Microbiology, Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Joo-Heon Yoon
- Airway Mucus Institute, Yonsei University College of Medicine, Seoul, Korea; Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.
| | - Jong-Hwan Park
- Laboratory Animal Medicine, College of Veterinary Medicine and Animal Medical Institute, Chonnam National University, Gwangju, Korea.
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23
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Silencing circRNA LRP6 down-regulates PRMT1 to improve the streptozocin-induced pancreatic β-cell injury and insulin secretion by sponging miR-9-5p. J Bioenerg Biomembr 2021; 53:333-342. [PMID: 33826088 DOI: 10.1007/s10863-021-09895-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 03/31/2021] [Indexed: 01/09/2023]
Abstract
Due to the sedentary lifestyles of people, the number of obese people is increasing alarmingly, which leads to the high prevalence of diabetes mellitus (DM). It was reported that circularRNA (circRNA) LRP6 was upregulated in HG-treated mesangial cells, and it could regulate high glucose-induced cell injury via sponging miR-205. Thus, the aim of this study was to explore the underlying pathogenesis of DM. Streptozocin (STZ) was used to stimulate the in vitro model of pancreatic β-cell injury. Then, quantitative reverse transcription polymerase chain reaction (RT-qPCR) and methyl thiazolyl tetrazolium (MTT) assay were used to evaluate the expression of circLRP6 and the cell viability in STZ-challenged INS-1 cells, respectively. After knocking down circLRP6, the cell viability and apoptosis were respectively measured by MTT and TdT-mediated dUTP nick-end labeling (TUNEL) staining, and insulin release and oxidative stress were respectively measured by enzyme-linked immunosorbent assay (ELISA) and corresponding kits. After the interactions among circLRP6, PRMT1, and miR-9-5p were predicted and confirmed, the above mentioned assays were conducted again. The expression of circLRP6 was elevated while cell viability was decreased after INS-1 cells were exposed to STZ. Silencing circLRP6 resulted in an increase in the cell viability, a decrease in the cell apoptosis, together with more insulin release. The circLRP6/miR-9-5p/PRMT1 regulatory network was then confirmed, which affected the cell viability, apoptosis, insulin release, and oxidative stress in STZ-challenged INS-1 cells. In conclusion, this study first provides evidence that the circLRP6/miR-9-5p/PRMT1 regulatory network can affect STZ-induced cell viability, oxidative stress, and insulin secretion in INS-l cells, which can further impact the progression of diabetes.
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24
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Wang J, Wang C, Xu P, Li X, Lu Y, Jin D, Yin X, Jiang H, Huang J, Xiong H, Ye F, Jin J, Chen Y, Xie Y, Chen Z, Ding H, Zhang H, Liu R, Jiang H, Chen K, Yao Z, Luo C, Huang Y, Zhang Y, Zhang J. PRMT1 is a novel molecular therapeutic target for clear cell renal cell carcinoma. Am J Cancer Res 2021; 11:5387-5403. [PMID: 33859753 PMCID: PMC8039964 DOI: 10.7150/thno.42345] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 02/17/2021] [Indexed: 01/06/2023] Open
Abstract
Background and Objective: Epigenetic alterations are common events in clear cell renal cell carcinoma (ccRCC), and protein arginine methyltransferase 1 (PRMT1) is an important epigenetic regulator in cancers. However, its role in ccRCC remains unclear. Methods: We investigated PRMT1 expression level and its correlations to clinicopathological factors and prognosis in ccRCC patients based on ccRCC tissue microarrays (TMAs). Genetic knockdown and pharmacological inhibition using a novel PRMT1 inhibitor DCPT1061 were performed to investigate the functional role of PRMT1 in ccRCC proliferation. Besides, we confirmed the antitumor effect of PRMT1 inhibitor DCPT1061 in ccRCC cell-derived tumor xenograft (CDX) models as well as patient-derived tumor xenograft (PDX) models. Results: We found PRMT1 expression was remarkably upregulated in tumor tissues and associated with poor pathologic characters and outcomes of ccRCC patients. Furthermore, genetic knockdown and pharmacological inhibition of PRMT1 by a novel potent inhibitor DCPT1061 dramatically induced G1 cell cycle arrest and suppressed ccRCC cell growth. Mechanistically, RNA sequencing and further validation identified Lipocalin2 (LCN2), a secreted glycoprotein implicated in tumorigenesis, as a crucial regulator of ccRCC growth and functional downstream effector of PRMT1. Epigenetic silencing of LCN2 autocrine secretion by PRMT1 deficiency decreased downstream p-AKT, leading to reduced p-RB and cell growth arrest through the neutrophil gelatinase associated lipocalin receptor (NGALR). Moreover, PRMT1 inhibition by DCPT1061 not only inhibited tumor growth but also sensitized ccRCC to sunitinib treatment in vivo by attenuating sunitinib-induced upregulation of LCN2-AKT-RB signaling. Conclusion: Taken together, our study revealed a PRMT1-dependent epigenetic mechanism in the control of ccRCC tumor growth and drug resistance, indicating PRMT1 may serve as a promising target for therapeutic intervention in ccRCC patients.
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25
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Fang L, Li J, Papakonstantinou E, Karakioulaki M, Sun Q, Schumann D, Tamm M, Stolz D, Roth M. Secreted heat shock proteins control airway remodeling: Evidence from bronchial thermoplasty. J Allergy Clin Immunol 2021; 148:1249-1261.e8. [PMID: 33675818 DOI: 10.1016/j.jaci.2021.02.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 02/09/2021] [Accepted: 02/11/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND Increased airway smooth muscle mass is a key pathology in asthma. Bronchial thermoplasty is a treatment for severe asthma based on selective heating of the airways that aims to reduce the mass of airway smooth muscle cells (ASMCs), and thereby bronchoconstriction. However, short heat exposure is insufficient to explain the long-lasting effect, and heat shock proteins (HSPs) have been suggested to play a role. OBJECTIVE We sought to determine the role of HSP70 and HSP90 in the control of airway wall remodeling by bronchial thermoplasty. METHODS Bronchoalveolar lavage fluid and endobronchial biopsies of 20 patients with severe asthma were obtained before and after thermoplasty. Isolated epithelial cells and ASMCs were exposed to 65oC for 10 seconds, mimicking thermoplasty. Proteins were determined by immunohistochemistry, Western blotting, immunofluorescence, and ELISA; proliferation by cell counts and antigen Ki67 (MKI67) expression. RESULTS Thermoplasty significantly increased the expression of HSP70 and HSP90 in the epithelium and bronchoalveolar lavage fluid. In ASMCs, thermoplasty reduced both HSPs. These cell-type-specific effects were detectable even 1 month after thermoplasty in tissue sections. In epithelial cells, ex vivo exposure to heat (65oC, 10 seconds) increased the expression and secretion of HSP70 and HSP90. In addition, epithelial cell proliferation was upregulated by heat or treatment with human recombinant HSP70 or HSP90. In ASMCs, heat exposure or exogenous HSPs reduced proliferation and differentiation. In both cell types, HSP70 and HSP90 activated the signaling cascade of serine/threonine-protein kinase →mammalian target of rapamycin→ribosomal protein S6 kinase 1 and CCAAT/enhancer binding protein-β→protein arginine methyltransferase 1→ mitochondria activity. CONCLUSIONS Epithelial cell-derived HSP70 and HSP90 improve the function of epithelial cells, but block ASMC remodeling.
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Affiliation(s)
- Lei Fang
- Pulmonary Cell Research & Clinic of Respiratory Medicine, Department of Biomedicine, University of Basel & University Hospital of Basel, Basel, Switzerland
| | - Junling Li
- Pulmonary Cell Research & Clinic of Respiratory Medicine, Department of Biomedicine, University of Basel & University Hospital of Basel, Basel, Switzerland; The affiliated Dongguan Shilong People's Hospital of Southern Medical University, Guangdong, China
| | - Eleni Papakonstantinou
- Pulmonary Cell Research & Clinic of Respiratory Medicine, Department of Biomedicine, University of Basel & University Hospital of Basel, Basel, Switzerland
| | - Meropi Karakioulaki
- Pulmonary Cell Research & Clinic of Respiratory Medicine, Department of Biomedicine, University of Basel & University Hospital of Basel, Basel, Switzerland
| | - Qingzhu Sun
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi, China
| | - Desiree Schumann
- Pulmonary Cell Research & Clinic of Respiratory Medicine, Department of Biomedicine, University of Basel & University Hospital of Basel, Basel, Switzerland
| | - Michael Tamm
- Pulmonary Cell Research & Clinic of Respiratory Medicine, Department of Biomedicine, University of Basel & University Hospital of Basel, Basel, Switzerland
| | - Daiana Stolz
- Pulmonary Cell Research & Clinic of Respiratory Medicine, Department of Biomedicine, University of Basel & University Hospital of Basel, Basel, Switzerland
| | - Michael Roth
- Pulmonary Cell Research & Clinic of Respiratory Medicine, Department of Biomedicine, University of Basel & University Hospital of Basel, Basel, Switzerland.
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26
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Xu L, Yi M, Tan Y, Yi Z, Zhang Y. A comprehensive analysis of microRNAs as diagnostic biomarkers for asthma. Ther Adv Respir Dis 2020; 14:1753466620981863. [PMID: 33357010 PMCID: PMC7768876 DOI: 10.1177/1753466620981863] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background: It is unclear whether microRNAs could be a potential diagnostic biomarker for asthma or not. The objective of this study is to figure out the diagnostic value of microRNAs in asthma. Methods: Literature retrieval, screening of publications, specific data extraction, and quality evaluation were conducted according to the standard criteria. Stata 14.0 software was used to analyze the diagnostic value of microRNA for asthma, including the combined sensitivity (Sen), specificity (Spe), the area under the curve (AUC), positive likelihood ratio (PLR), negative likelihood ratio (NLR), and diagnostic odds ratio (DOR). Results: A total of 72 studies, containing 4143 cases and 2188 controls, were included for this comprehensive analysis. None of the included publications were rated low in quality. We summarized that, compared with controls, more than 100 miRNAs were reported differently expressed in asthma, although the expression trends were inconsistent. Besides, there were five studies among these 72 articles that applied the diagnostic evaluation of microRNAs in asthma. We found that the pooled Sen, Spe, and AUC for the combination of miR-185-5p, miR-155, let-7a, miR-21, miR-320a, miR-1246, miR-144-5p, and miR-1165-3p in asthma were 0.87 (95%CI: 0.72–0.95), 0.84 (95%CI: 0.74–0.91), and 0.93 (95%CI: 0.89–0.94) individually, and the PLR, NLR, and DOR were 5.5 (95%CI: 3.1–9.7), 0.15 (95%CI: 0.07–0.36), and 35 (95%CI: 10–127) in asthma, respectively. In terms of subgroup analyses, we found that the Sen for these combination miRNAs from serum was higher than that in plasma, while the Spe in plasma worked better than that in serum. Furthermore, compared with children, the combination of above miRNAs from adults had higher Spe and similar Sen. Conclusions: From our analysis, the combination of miR-185-5p, miR-155, let-7a, miR-21, miR-320a, miR-1246, miR-144-5p, and miR-1165-3p from peripheral blood could potentially act as a diagnostic biomarker for asthma. The reviews of this paper are available via the supplemental material section.
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Affiliation(s)
- Li Xu
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China.,School of Life Sciences, Central South University, Changsha, Hunan, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Minhan Yi
- School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Yun Tan
- School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Zixun Yi
- School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Yuan Zhang
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
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27
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Fang L, Roth M, S'ng CT, Tamm M, Han B, Hoang BX. Zinc salicylate reduces airway smooth muscle cells remodelling by blocking mTOR and activating p21 (Waf1/Cip1). J Nutr Biochem 2020; 89:108563. [PMID: 33326841 DOI: 10.1016/j.jnutbio.2020.108563] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 08/22/2020] [Accepted: 11/24/2020] [Indexed: 12/17/2022]
Abstract
Asthma is characterized by chronic inflammation and tissue remodeling of the airways. Remodeling is resistant to pharmaceutical therapies. This study investigated the effect of zinc salicylate-methylsulfonylmethane (Zn-Sal-MSM) compared to zinc salicylate (Zn-Sal), or sodium salicylate (Na-Sal), or zinc chloride (ZnCl2) on remodeling parameters of human airway smooth muscle cells (ASMC). Human ASMC obtained from asthma patients (n=7) and non-asthma controls (n=7) were treated with one of the reagents. Cell proliferation and viability was determined by direct cell counts and MTT assay. The expression of and phosphorylation proteins was determined by Western-blotting, ELISA, immunofluorescence, and mass spectrometry. Extracellular matrix deposition by ELISA. Zn-Sal-MSM, Zn-Sal and Na-Sal (0.1-100 µg/mL) significantly reduced PDGF-BB-induced proliferation in a concentration dependent manner, while ZnCl2 was toxic. The reduced proliferation correlated with increased expression of the cell cycle inhibitor p21(Waf1/Cip1), and reduced activity of Akt, p70S6K, and Erk1/2. Zn-Sal-MSM, Zn-Sal, but not Na-Sal reduced the deposition of fibronectin and collagen type-I. Furthermore, Zn-Sal-MSM reduced the mitochondria specific COX4 expression. Mass spectrometry indicated that Zn-Sal-MSM modified the expression of several signaling proteins and zinc-dependent enzymes. In conclusion, Zn-Sal-MSM and Zn-Sal potentially prevent airway wall remodeling in asthma by inhibition of both the Erk1/2 and mTOR signaling pathways.
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Affiliation(s)
- Lei Fang
- Pulmonary Cell Research/Pneumology, Department of Biomedicine/Internal Medicine, University and University Hospital Basel, Basel, Switzerland
| | - Michael Roth
- Pulmonary Cell Research/Pneumology, Department of Biomedicine/Internal Medicine, University and University Hospital Basel, Basel, Switzerland.
| | | | - Michael Tamm
- Pulmonary Cell Research/Pneumology, Department of Biomedicine/Internal Medicine, University and University Hospital Basel, Basel, Switzerland
| | - Bo Han
- Cordoba-Nimni Tissue Engineering and Drug Discovery Lab, Department of Surgery, University of Southern California, Los Angeles, California
| | - Ba Xuan Hoang
- Cordoba-Nimni Tissue Engineering and Drug Discovery Lab, Department of Surgery, University of Southern California, Los Angeles, California
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28
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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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29
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Fang L, Sun Q, Roth M. Immunologic and Non-Immunologic Mechanisms Leading to Airway Remodeling in Asthma. Int J Mol Sci 2020; 21:ijms21030757. [PMID: 31979396 PMCID: PMC7037330 DOI: 10.3390/ijms21030757] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 01/18/2020] [Accepted: 01/20/2020] [Indexed: 02/07/2023] Open
Abstract
Asthma increases worldwide without any definite reason and patient numbers double every 10 years. Drugs used for asthma therapy relax the muscles and reduce inflammation, but none of them inhibited airway wall remodeling in clinical studies. Airway wall remodeling can either be induced through pro-inflammatory cytokines released by immune cells, or direct binding of IgE to smooth muscle cells, or non-immunological stimuli. Increasing evidence suggests that airway wall remodeling is initiated early in life by epigenetic events that lead to cell type specific pathologies, and modulate the interaction between epithelial and sub-epithelial cells. Animal models are only available for remodeling in allergic asthma, but none for non-allergic asthma. In human asthma, the mechanisms leading to airway wall remodeling are not well understood. In order to improve the understanding of this asthma pathology, the definition of “remodeling” needs to be better specified as it summarizes a wide range of tissue structural changes. Second, it needs to be assessed if specific remodeling patterns occur in specific asthma pheno- or endo-types. Third, the interaction of the immune cells with tissue forming cells needs to be assessed in both directions; e.g., do immune cells always stimulate tissue cells or are inflamed tissue cells calling immune cells to the rescue? This review aims to provide an overview on immunologic and non-immunologic mechanisms controlling airway wall remodeling in asthma.
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Affiliation(s)
- Lei Fang
- Pulmonary Cell Research & Pneumology, University Hospital & University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland;
| | - Qinzhu Sun
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China;
| | - Michael Roth
- Pulmonary Cell Research & Pneumology, University Hospital & University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland;
- Correspondence: ; Tel.: +41-61-265-2337
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30
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Rahmawati SF, Gosens R. Hot off the press: downregulation of PRMT1 for long-lasting effects of bronchial thermoplasty. Eur Respir J 2019; 54:54/6/1901898. [PMID: 31801822 DOI: 10.1183/13993003.01898-2019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 10/28/2019] [Indexed: 11/05/2022]
Affiliation(s)
- Siti Farah Rahmawati
- Dept of Molecular Pharmacology and GRIAC Research Institute, University of Groningen, Groningen, The Netherlands.,Dept of Pharmacology-Clinical Pharmacy, School of Pharmacy, Institut Teknologi Bandung, Bandung, Indonesia
| | - Reinoud Gosens
- Dept of Molecular Pharmacology and GRIAC Research Institute, University of Groningen, Groningen, The Netherlands
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31
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Sun Q, Fang L, Roth M, Tang X, Papakonstantinou E, Zhai W, Louis R, Heinen V, Schleich FN, Lu S, Savic S, Tamm M, Stolz D. Bronchial thermoplasty decreases airway remodelling by blocking epithelium-derived heat shock protein-60 secretion and protein arginine methyltransferase-1 in fibroblasts. Eur Respir J 2019; 54:13993003.00300-2019. [PMID: 31467116 DOI: 10.1183/13993003.00300-2019] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 08/13/2019] [Indexed: 02/04/2023]
Abstract
Bronchial thermoplasty (BT) is to date the only therapy that provides a lasting reduction in airway wall remodelling. However, the mechanism of action of BT is not well understood. This study aimed to characterise the changes of remodelling regulating signalling pathways by BT in asthma.Bronchoalveolar lavage fluid (BALF) was obtained from eight patients with severe asthma before and after BT. Primary bronchial epithelial cells were isolated from 23 patients before (n=66) and after (n=62) BT. Epithelial cell culture supernatant (Epi.S) was collected and applied to primary fibroblasts.Epithelial cells obtained from asthma patients after BT proliferated significantly faster compared with epithelial cells obtained before BT. In airway fibroblasts, BALF or Epi.S obtained before BT increased CCAAT enhancer-binding protein-β (C/EBPβ) expression, thereby downregulating microRNA-19a. This upregulated extracellular signal-regulated kinase-1/2 (ERK1/2) expression, protein arginine methyltransferase-1 (PRMT1) expression, cell proliferation and mitochondrial mass. BALF or Epi.S obtained after BT reduced the expression of C/EBPβ, ERK1/2, peroxisome proliferator-activated receptor-γ coactivator-1α (PGC1α), PRMT1 and mitochondrial mass in airway fibroblasts. Proteome and transcriptome analyses indicated that epithelial cell-derived heat shock protein-60 (HSP60) is the main mediator of BT effects on fibroblasts. Further analysis suggested that HSP60 regulated PRMT1 expression, which was responsible for the increased mitochondrial mass and α-smooth muscle actin expression by asthmatic fibroblasts. These effects were ablated after BT. These results imply that BT reduces fibroblast remodelling through modifying the function of epithelial cells, especially by reducing HSP60 secretion and subsequent signalling pathways that regulate PRMT1 expression.We therefore hypothesise that BT decreases airway remodelling by blocking epithelium-derived HSP60 secretion and PRMT1 in fibroblasts.
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Affiliation(s)
- Qingzhu Sun
- College of Animal Science and Technology, Northwest A&F University, Yangling, China.,Pneumology and Pulmonary Cell Research, Depts of Internal Medicine and Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland.,These authors contributed equally to this work
| | - Lei Fang
- Pneumology and Pulmonary Cell Research, Depts of Internal Medicine and Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland.,These authors contributed equally to this work
| | - Michael Roth
- Pneumology and Pulmonary Cell Research, Depts of Internal Medicine and Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland
| | - Xuemei Tang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Eleni Papakonstantinou
- Pneumology and Pulmonary Cell Research, Depts of Internal Medicine and Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland
| | - Weiqi Zhai
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Renaud Louis
- Dept of Pneumology, University of Liege, Liege, Belgium
| | | | | | - Shemin Lu
- Dept of Biochemistry and Molecular Biology, Xi'an Jiaotong University Health Science Centre, Xi'an, China
| | - Spasenjia Savic
- Dept of Pathology, University Hospital Basel, Basel, Switzerland
| | - Michael Tamm
- Pneumology and Pulmonary Cell Research, Depts of Internal Medicine and Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland
| | - Daiana Stolz
- Pneumology and Pulmonary Cell Research, Depts of Internal Medicine and Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland
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32
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Jin J, Martin M, Hartley AV, Lu T. PRMTs and miRNAs: functional cooperation in cancer and beyond. Cell Cycle 2019; 18:1676-1686. [PMID: 31234694 DOI: 10.1080/15384101.2019.1629791] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Epigenetic modulators play pivotal roles in directing gene expression for the maintenance of normal cellular functions. However, when these modulators are aberrantly regulated, this can result in a variety of disease states, including cancer. One class of epigenetic regulators, protein arginine methyltransferases (PRMTs), have been shown to play critical roles in disease through methylation of arginine residues (R) on histone or non-histone proteins. Quite different from PRMTs, microRNAs (miRNAs) belong to the family of modulators known as noncoding RNAs (ncRNA) that act to regulate gene expression via RNA-mediated gene silencing. Importantly, miRNAs are frequently dysregulated and contribute to the progression of cancer and other conditions, including neurological and cardiovascular diseases. Recently, numerous studies have shown that miRNAs and other epigenetic enzymes can co-regulate each other. This review highlights multiple nodes of interaction between miRNAs and PRMTs and also discusses how this interplay might open up promising opportunities for drug development for the treatment of cancer and other diseases.
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Affiliation(s)
- Jiamin Jin
- a College of Life Science , Northeast Forestry University , Harbin , China.,b Department of Pharmacology and Toxicology , Indiana University School of Medicine , Indianapolis , IN , USA
| | - Matthew Martin
- b Department of Pharmacology and Toxicology , Indiana University School of Medicine , Indianapolis , IN , USA
| | - Antja-Voy Hartley
- b Department of Pharmacology and Toxicology , Indiana University School of Medicine , Indianapolis , IN , USA
| | - Tao Lu
- b Department of Pharmacology and Toxicology , Indiana University School of Medicine , Indianapolis , IN , USA.,c Department of Biochemistry and Molecular Biology , Indiana University School of Medicine , Indianapolis , IN , USA.,d Department of Medical and Molecular Genetics , Indiana University School of Medicine , Indianapolis , IN , USA
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33
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Zhao J, O’Neil M, Vittal A, Weinman SA, Tikhanovich I. PRMT1-Dependent Macrophage IL-6 Production Is Required for Alcohol-Induced HCC Progression. Gene Expr 2019; 19:137-150. [PMID: 30236171 PMCID: PMC6466176 DOI: 10.3727/105221618x15372014086197] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Alcohol is a well-established risk factor for hepatocellular carcinoma, but the mechanisms are not well understood. Several studies suggested that alcohol promotes tumor growth by altering immune cell phenotypes in the liver. Arginine methylation is a common posttranslational modification generated mostly by a single protein, PRMT1. In myeloid cells PRMT1 is a key regulator of immune response. Myeloid-specific PRMT1 knockout mice are hyperresponsive to LPS and deficient in PPARγ-dependent macrophage M2 polarization. We aimed to define the role of myeloid PRMT1 in alcohol-associated liver tumor progression using a mouse model of DEN injection followed by Lieber-DeCarli alcohol liquid diet feeding. We found that PRMT1 knockout mice showed significantly lower expression of IL-10 and IL-6 cytokines in the liver and downstream STAT3 activation, which correlated with reduced number of surface tumors, reduced proliferation, and reduced number of M2 macrophages in the liver as well as within proliferating nodules. We found that blocking IL-6 signaling in alcohol-fed mice reduced the number of tumors and liver proliferation in wild-type mice but not in knockout mice suggesting that reduced IL-6 in PRMT1 knockout mice contributes to the protection from alcohol. Additionally, PRMT1 knockout did not show any protection in tumor formation in the absence of alcohol. Finally, we confirmed that this mechanism is relevant in humans. We found that PRMT1 expression in tumor-associated macrophages correlated with STAT3 activation in human HCC specimens. Taken together, these data suggest that the PRMT1-IL-6-STAT3 axis is an important mechanism of alcohol-associated tumor progression.
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Affiliation(s)
- Jie Zhao
- *Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Maura O’Neil
- †Department of Pathology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Anusha Vittal
- ‡Liver Center, University of Kansas Medical Center, Kansas City, KS, USA
| | - Steven A. Weinman
- *Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS, USA
- ‡Liver Center, University of Kansas Medical Center, Kansas City, KS, USA
| | - Irina Tikhanovich
- *Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS, USA
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34
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Sun Q, Fang L, Tang X, Lu S, Tamm M, Stolz D, Roth M. TGF-β Upregulated Mitochondria Mass through the SMAD2/3→C/EBPβ→PRMT1 Signal Pathway in Primary Human Lung Fibroblasts. THE JOURNAL OF IMMUNOLOGY 2018; 202:37-47. [PMID: 30530593 DOI: 10.4049/jimmunol.1800782] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 10/29/2018] [Indexed: 12/16/2022]
Abstract
Tissue remodeling of subepithelial mesenchymal cells is a major pathologic condition of chronic obstructive pulmonary disease and asthma. Fibroblasts contribute to fibrotic events and inflammation in both airway diseases. Recent mechanistic studies established a link between mitochondrial dysfunction or aberrant biogenesis leading to tissue remodeling of the airway wall in asthma. Protein arginine methyltransferase-1 (PRMT1) participated in airway wall remodeling in pulmonary inflammation. This study investigated the mechanism by which PRMT1 regulates mitochondrial mass in primary human airway wall fibroblasts. Fibroblasts from control or asthma patients were stimulated with TGF-β for up to 48 h, and the signaling pathways controlling PRMT1 expression and mitochondrial mass were analyzed. PRMT1 activity was suppressed by the pan-PRMT inhibitor AMI-1. The SMAD2/3 pathway was blocked by SB203580 and C/EBPβ by small interference RNA treatment. The data obtained from unstimulated cells showed a significantly higher basal expression of PRMT1 and mitochondrial markers in asthmatic compared with control fibroblasts. In all cells, TGF-β significantly increased the expression of PRMT1 through SMAD2/3 and C/EBPβ. Subsequently, PRMT1 upregulated the expression of the mitochondria regulators PGC-1α and heat shock protein 60. Both the inhibition of the SAMD2/3 pathway or PRMT1 attenuated TGF-β-induced mitochondrial mass and C/EBPβ and α-SMA expression. These findings suggest that the signaling sequence controlling mitochondria in primary human lung fibroblasts is as follows: TGF-β→SMAD2/3→C/EBPβ→PRMT1→PGC-1α. Therefore, PRMT1 and C/EBPβ present a novel therapeutic and diagnostic target for airway wall remodeling in chronic lung diseases.
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Affiliation(s)
- 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 of Basel and University Hospital Basel, CH-4031 Basel, Switzerland; and
| | - Lei Fang
- Pneumology and Pulmonary Cell Research, Department of Biomedicine, University of Basel and University Hospital Basel, CH-4031 Basel, Switzerland; and
| | - Xuemei Tang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Shemin Lu
- Department of Biochemistry and Molecular Biology, Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an Jiaotong University Health Science Center, Xi'an 710061, Shaanxi, China
| | - Michael Tamm
- Pneumology and Pulmonary Cell Research, Department of Biomedicine, University of Basel and University Hospital Basel, CH-4031 Basel, Switzerland; and
| | - Daiana Stolz
- Pneumology and Pulmonary Cell Research, Department of Biomedicine, University of Basel and University Hospital Basel, CH-4031 Basel, Switzerland; and
| | - Michael Roth
- Pneumology and Pulmonary Cell Research, Department of Biomedicine, University of Basel and University Hospital Basel, CH-4031 Basel, Switzerland; and
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35
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Role of microRNA in severe asthma. Respir Investig 2018; 57:9-19. [PMID: 30455067 DOI: 10.1016/j.resinv.2018.10.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 10/15/2018] [Accepted: 10/18/2018] [Indexed: 12/23/2022]
Abstract
The various roles of microRNAs (miRNAs) in the epigenetic regulation of human disease are gaining importance as areas of research, and a better understanding of these roles may identify targets for development of novel therapies for severe asthma. MiRNAs, a class of small non-coding RNAs that serve as post-transcriptional gene repressors, are recognized as critical components in regulating tissue homeostasis. Alteration in miRNA expression disrupts homeostasis and is an underlying mechanism for development of chronic respiratory diseases, including asthma. Differential profiles of miRNA expression are involved in inflammation and remodeling pathogenicity via activating airway structural cells and immune cells and inducing cytokine releases. miRNA action leads to asthma progression from mild to severe stages. Here, current knowledge of the heterogeneous roles of miRNAs in severe asthma, including biological mechanisms underlying Th2 and macrophage polarization, type 2 innate lymphoid cell (ILC2) biology regulation, steroid-resistant asthma phenotype, airway smooth muscle (ASM) dysfunction, and impaired anti-viral innate immune, are reviewed.
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36
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Kaczmarek KA, Clifford RL, Knox AJ. Epigenetic Changes in Airway Smooth Muscle as a Driver of Airway Inflammation and Remodeling in Asthma. Chest 2018; 155:816-824. [PMID: 30414795 DOI: 10.1016/j.chest.2018.10.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 10/10/2018] [Accepted: 10/29/2018] [Indexed: 12/18/2022] Open
Abstract
Epigenetic changes are heritable changes in gene expression, without changing the DNA sequence. Epigenetic processes provide a critical link between environmental insults to the airway and functional changes that determine how airway cells respond to future stimuli. There are three primary epigenetic processes: histone modifications, DNA modification, and noncoding RNAs. Airway smooth muscle has several important roles in the development and maintenance of the pathologic processes occurring in asthma, including inflammation, remodeling, and contraction/hyperresponsiveness. In this review, we describe the evidence for the role of epigenetic changes in driving these processes in airway smooth muscle cells in asthma, with a particular focus on histone modifications. We also discuss how existing therapies may target some of these changes and how epigenetic processes provide targets for the development of novel asthma therapeutics. Epigenetic marks may also provide a biomarker to assess phenotype and treatment responses.
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Affiliation(s)
- Klaudia A Kaczmarek
- Division of Respiratory Medicine, Nottingham University Hospitals NHS Trust (City Hospital Campus); and the Nottingham NIHR Biomedical Research Centre, Nottingham MRC Molecular Pathology Node
| | - Rachel L Clifford
- Division of Respiratory Medicine, Nottingham University Hospitals NHS Trust (City Hospital Campus); and the Nottingham NIHR Biomedical Research Centre, Nottingham MRC Molecular Pathology Node
| | - Alan J Knox
- Division of Respiratory Medicine, Nottingham University Hospitals NHS Trust (City Hospital Campus); and the Nottingham NIHR Biomedical Research Centre, Nottingham MRC Molecular Pathology Node.
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P2X4R promotes airway remodeling by acting on the phenotype switching of bronchial smooth muscle cells in rats. Purinergic Signal 2018; 14:433-442. [PMID: 30387030 DOI: 10.1007/s11302-018-9625-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 09/04/2018] [Indexed: 12/20/2022] Open
Abstract
The P2X4 receptor (P2X4R) contributes to airway inflammation and airway remodeling in mice with allergic asthma. However, the molecular mechanism by which P2X4R affects the airway remodeling in allergic asthma remains largely unknown. We established an allergic asthma model by ovalbumin (OVA) inhalation in BALB/c mice. Compared with the mice in the control group, the expression of proliferating cell nuclear antigen (PCNA) increased and that of alpha-smooth muscle actin (α-SMA) decreased in the OVA-challenged mice. 5-BDBD, a P2X4R antagonist, alleviated the OVA-induced changes. To clarify the role of P2X4R in the phenotype switching of the bronchial smooth muscle, bronchial smooth muscle contractility and p38MAPK expression were investigated. Platelet-derived growth factor-BB (PDGF-BB) was used to activate the proliferation of primary-cultured rat bronchial smooth muscle cells (BSMCs). P2X4R, p38MAPK, and phenotype markers were evaluated using Western blotting or immunofluorescence. PDGF-BB administration increased the P2X4R and phospho-p38MAPK expression in BSMCs, and the increased phospho-p38MAPK expression was downregulated by silencing of the P2X4R mRNA. PDGF-BB stimulated the proliferation and synthetic phenotype of BSMCs, which was aggravated by a P2X4R agonist and alleviated by a P2X4R antagonist or silencing the P2X4R mRNA. The decreased contractile phenotype induced by PDGF-BB was alleviated by a P2X4R antagonist or by silencing the P2X4R mRNA. SB203580, p38MAPK inhibitor, inhibited the PDGF-BB-induced increasing of synthetic phenotype and the proliferation of BSMCs. These findings indicate that P2X4R acts directly on the phenotype switching of BSMCs. Inhibiting P2X4R can promote the contractile differentiation of BSMCs via p38MAPK signaling. Thus, the effect of P2X4R on airway remodeling indicates that this receptor could be a target for future drug candidates.
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Skevaki C, Renz H. Advances in mechanisms of allergic disease in 2017. J Allergy Clin Immunol 2018; 142:1730-1739. [PMID: 30315828 DOI: 10.1016/j.jaci.2018.09.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 09/14/2018] [Accepted: 09/21/2018] [Indexed: 02/07/2023]
Abstract
This review highlights advances in mechanisms of allergic disease, particularly type 2 innate lymphoid cells, TH2 lymphocytes, B cells, dendritic cells, microbiome and barrier function, eosinophils, and mast cells. During the last year, considerable progress has been made in the further characterization of type 2 inflammation controlled by both adaptive (TH2) and type 2 innate lymphoid effector cells. New pathways of lymphocyte activation, trafficking, and recruitment and effector cell mechanisms have been discovered. The plasticity of lymphocyte effector cell responses is another area in which major progress has been achieved. Accumulating evidence will influence both our understanding of allergic disease and our efforts for allergy prevention and treatment.
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Affiliation(s)
- Chrysanthi Skevaki
- Institute of Laboratory Medicine, Philipps Universität Marburg, Marburg, Germany; Universities of Giessen and Marburg Lung Center (UGMLC), Philipps Universität Marburg, German Center for Lung Research (DZL), Marburg, Germany
| | - Harald Renz
- Institute of Laboratory Medicine, Philipps Universität Marburg, Marburg, Germany; Universities of Giessen and Marburg Lung Center (UGMLC), Philipps Universität Marburg, German Center for Lung Research (DZL), Marburg, Germany.
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Chiba Y, Suto W, Sakai H. Augmented Pla2g4c/Ptgs2/Hpgds axis in bronchial smooth muscle tissues of experimental asthma. PLoS One 2018; 13:e0202623. [PMID: 30161143 PMCID: PMC6116991 DOI: 10.1371/journal.pone.0202623] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Accepted: 08/07/2018] [Indexed: 12/19/2022] Open
Abstract
Rationale Augmented smooth muscle contractility of the airways is one of the causes of airway hyperresponsiveness in asthmatics. However, the mechanism of the altered properties of airway smooth muscle cells is not well understood. Objectives To identify differentially expressed genes (DEGs) related to the bronchial smooth muscle (BSM) hyper-contractility in a murine asthma model. Methods The ovalbumin (OA)-sensitized mice were repeatedly challenged with aerosolized OA to induce asthmatic reaction. Transcriptomic profiles were generated by microarray analysis of BSM tissues from the OA-challenged and control animals, and KEGG (Kyoto Encyclopedia of Genes and Genomes) Pathway Analysis was applied. Measurements and main results Tension study showed a BSM hyperresponsiveness to acetylcholine (ACh) in the OA-challenged mice. A total of 770 genes were differentially expressed between the OA-challenged and control animals. Pathway analysis showed a significant change in arachidonic acid (AA) metabolism pathway in BSM tissues of the OA-challenged mice. Validation of DEGs by quantitative RT-PCR showed a significant increase in PLA2 group 4c (Pla2g4c)/COX-2 (Ptgs2)/PGD2 synthase 2 (Hpgds) axis. PGD2 level in bronchoalveolar fluids of the OA-challenged mice was significantly increased. A 24-h incubation of BSM tissues with PGD2 caused a hyperresponsiveness to ACh in naive control mice. Conclusions AA metabolism is shifted towards PGD2 production in BSM tissues of asthma. Increased PGD2 level in the airways might be a cause of the BSM hyperresponsiveness in asthma.
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Affiliation(s)
- Yoshihiko Chiba
- Department of Physiology and Molecular Sciences, School of Pharmacy, Hoshi University, Tokyo, Japan
- * E-mail:
| | - Wataru Suto
- Department of Physiology and Molecular Sciences, School of Pharmacy, Hoshi University, Tokyo, Japan
| | - Hiroyasu Sakai
- Department of Analytical Pathophysiology, School of Pharmacy, Hoshi University, Tokyo, Japan
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Roth M, Pasquali C, Stolz D, Tamm M. Broncho Vaxom (OM-85) modulates rhinovirus docking proteins on human airway epithelial cells via Erk1/2 mitogen activated protein kinase and cAMP. PLoS One 2017; 12:e0188010. [PMID: 29182620 PMCID: PMC5705076 DOI: 10.1371/journal.pone.0188010] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 10/30/2017] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Bronchial epithelial cells (BEC) are primary target for Rhinovirus infection through attaching to cell membrane proteins. OM-85, a bacterial extract, improves recovery of asthma and COPD patients after viral infections, but only part of the mechanism was addressed, by focusing on defined immune cells. OBJECTIVE We therefore determined the effect of OM-85 on isolated primary human BEC of controls (n = 8), asthma patients (n = 10) and COPD patients (n = 9). METHODS BEC were treated with OM-85 alone (24 hours) or infected with Rhinovirus. BEC survival was monitored by manual cell counting and Rhinovirus replication by lytic activity. Immuno-blotting and ELISA were used to determine the expression of Rhinovirus interacting proteins: intracellular adhesion molecule (ICAM), major histocompatibility complex class II (MHC-2), complement component C1q receptor (C1q-R), inducible T-Cell co-stimulator (ICOS), its ligand ICOSL, and myeloid differentiation primary response gene 88 (Myd88); as well as for signal transducers Erk1/2, p38, JNK mitogen activated protein kinases MAPK), and cAMP. RESULTS OM-85 significantly reduced Rhinovirus-induced BEC death and virus replication. OM-85 significantly increased the expression of virus interacting proteins C1q-R and β-defensin in all 3 probes and groups, which was prevented by either Erk1/2 MAPK or cAMP inhibition. In addition, OM-85 significantly reduced Rhinovirus induced expression of ICAM1 involving p38 MAPK. In BEC OM-85 had no significant effect on the expression of ICOS, ICOSL and MHC-2 membrane proteins nor on the adaptor protein MyD88. CONCLUSION The OM-85-induced increased of C1q-R and β-defensin, both important for antigen presentation and phagocytosis, supports its activity in host cell's defence against Rhinovirus infection.
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Affiliation(s)
- Michael Roth
- Pulmonary Cell Research, DBM University Basel and Pneumology Clinic, University Hospital Basel, Basel, Switzerland
| | | | - Daiana Stolz
- Pulmonary Cell Research, DBM University Basel and Pneumology Clinic, University Hospital Basel, Basel, Switzerland
| | - Michael Tamm
- Pulmonary Cell Research, DBM University Basel and Pneumology Clinic, University Hospital Basel, Basel, Switzerland
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