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Shahdab N, Ward C, Hansbro PM, Cummings S, Young JS, Moheimani F. Distinct Effects of Respiratory Viral Infection Models on miR-149-5p, IL-6 and p63 Expression in BEAS-2B and A549 Epithelial Cells. Cells 2024; 13:919. [PMID: 38891051 PMCID: PMC11172188 DOI: 10.3390/cells13110919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 05/16/2024] [Accepted: 05/21/2024] [Indexed: 06/20/2024] Open
Abstract
Respiratory viruses cause airway inflammation, resulting in epithelial injury and repair. miRNAs, including miR-149-5p, regulate different pathological conditions. We aimed to determine how miR-149-5p functions in regulating pro-inflammatory IL-6 and p63, key regulators of airway epithelial wound repair, in response to viral proteins in bronchial (BEAS-2B) and alveolar (A549) epithelial cells. BEAS-2B or A549 cells were incubated with poly (I:C, 0.5 µg/mL) for 48 h or SARS-CoV-2 spike protein-1 or 2 subunit (S1 or S2, 1 μg/mL) for 24 h. miR-149-5p was suppressed in BEAS-2B challenged with poly (I:C), correlating with IL-6 and p63 upregulation. miR-149-5p was down-regulated in A549 stimulated with poly (I:C); IL-6 expression increased, but p63 protein levels were undetectable. miR-149-5p remained unchanged in cells exposed to S1 or S2, while S1 transfection increased IL-6 expression in BEAS-2B cells. Ectopic over-expression of miR-149-5p in BEAS-2B cells suppressed IL-6 and p63 mRNA levels and inhibited poly (I:C)-induced IL-6 and p63 mRNA expressions. miR-149-5p directly suppressed IL-6 mRNA in BEAS-2B cells. Hence, BEAS-2B cells respond differently to poly (I:C), S1 or S2 compared to A549 cells. Thus, miR-149-5p dysregulation may be involved in poly (I:C)-stimulated but not S1- or S2-stimulated increased IL-6 production and p63 expression in BEAS-2B cells.
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Affiliation(s)
- Nafeesa Shahdab
- National Horizons Centre, School of Health and Life Sciences, Teesside University, Middlesbrough TS1 3BX, UK; (N.S.); (S.C.); (J.S.Y.)
| | - Christopher Ward
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne NE1 7RU, UK;
| | - Philip M. Hansbro
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, Faculty of Science, School of Life Sciences, Sydney 2007, Australia;
| | - Stephen Cummings
- National Horizons Centre, School of Health and Life Sciences, Teesside University, Middlesbrough TS1 3BX, UK; (N.S.); (S.C.); (J.S.Y.)
| | - John S. Young
- National Horizons Centre, School of Health and Life Sciences, Teesside University, Middlesbrough TS1 3BX, UK; (N.S.); (S.C.); (J.S.Y.)
| | - Fatemeh Moheimani
- Department of Life Sciences, Manchester Metropolitan University, Manchester M15 6BH, UK
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Al Okla SM, Al Rasbi FAZK, Al Marhubi HS, Al Mataani SS, Al Sawai YM, Mohammed HI, Al Mamari MAS, Al Balushi SAA, Abbady AQ. The Impact of Air Pollution on Asthma Severity among Residents Living near the Main Industrial Complex in Oman: A Cross-Sectional Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2024; 21:553. [PMID: 38791768 PMCID: PMC11121288 DOI: 10.3390/ijerph21050553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 04/16/2024] [Accepted: 04/23/2024] [Indexed: 05/26/2024]
Abstract
BACKGROUND Asthma is a widespread chronic respiratory disease that poses a significant public health challenge. The current study investigated the associations between air pollution and asthma severity among individuals residing near the Sohar industrial port (SIP) in Oman. Despite the presence of multiple major industrial complexes in Oman, limited knowledge regarding their impact on respiratory health is accredited. Hence, the primary objective of this study is to offer valuable insights into the respiratory health consequences of industrial air pollution in Al Batinah North. METHODS The state health clinics' records for patient visits related to asthma were collected for the timeframe spanning 2014 to 2022. Exposure was defined as the distance from the SIP, Majan Industerial Area (MIA), and Sohar Industerial Zone (SIZ) to determine high-, intermediate-, and low-exposure zones (<6 km, 6-12 km and >12 km, respectively). Exposure effect modifications by age, gender, and smoking status were also examined. RESULTS The conducted cross-sectional study of 410 patients (46.1% males and 53.9% females) living in over 17 areas around SIP revealed that 73.2% of asthmatics were under 50 years old, with severity significantly associated with closeness to the port. Risk ratios were estimated to be (RR:2.42; CI95%: 1.01-5.78), (RR:1.91; CI95%: 1.01-3.6), and (RR:1.68; CI95%: 0.92-3.09) for SIP, MIP, and SIZ areas, respectively, compared to the control area. Falaj Al Qabail (6.4 km) and Majees (6 km) had the highest number of asthma patients (N 69 and N 72) and highest percentages of severe asthma cases among these patients (28% and 24%) with significant risk ratios (RR:2.97; CI95%: 1.19-7.45 and RR:2.55; CI95%: 1.00-6.48), correspondingly. Moreover, severe asthma prevalence peaked in the 25-50 age group (RR:2.05; CI95%: 1.26-3.33), and this linkage between asthma and age was much more pronounced in males than females. Smoking and exposure to certain contaminants (dust and smoke) also increased the risk of severe asthma symptoms, but their effects were less important in the high-risk zone, suggesting much more important risk factors. A neural network model accurately predicted asthma risk (94.8% accuracy), with proximity to SIP as the most influential predictor. CONCLUSIONS This study highlights the high asthma burden near SIP, linked to port proximity, smoking, and wind direction as major risk factors. These findings inform vital public health policies to reduce air pollution and improve respiratory health in the region, prompting national policy review.
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Affiliation(s)
- Souad Mahmoud Al Okla
- College of Medicine and Health Sciences, National University of Science and Technology, P.O. Box 391, Sohar 321, Oman; (F.A.Z.K.A.R.); (H.S.A.M.); (S.S.A.M.); (Y.M.A.S.)
- Department of Biology, Faculty of Sciences, Damascus University, Damascus P.O. Box 30621, Syria
| | - Fatima Al Zahra Khamis Al Rasbi
- College of Medicine and Health Sciences, National University of Science and Technology, P.O. Box 391, Sohar 321, Oman; (F.A.Z.K.A.R.); (H.S.A.M.); (S.S.A.M.); (Y.M.A.S.)
| | - Hawida Said Al Marhubi
- College of Medicine and Health Sciences, National University of Science and Technology, P.O. Box 391, Sohar 321, Oman; (F.A.Z.K.A.R.); (H.S.A.M.); (S.S.A.M.); (Y.M.A.S.)
| | - Shima Salim Al Mataani
- College of Medicine and Health Sciences, National University of Science and Technology, P.O. Box 391, Sohar 321, Oman; (F.A.Z.K.A.R.); (H.S.A.M.); (S.S.A.M.); (Y.M.A.S.)
| | - Yusra Mohammed Al Sawai
- College of Medicine and Health Sciences, National University of Science and Technology, P.O. Box 391, Sohar 321, Oman; (F.A.Z.K.A.R.); (H.S.A.M.); (S.S.A.M.); (Y.M.A.S.)
| | - Hasa Ibrahim Mohammed
- Liwa Extended Health Center, Ministry of Health, Liwa 325, Oman; (H.I.M.); (M.A.S.A.M.)
| | | | | | - Abdul Qader Abbady
- Division of Molecular Biomedicine, Department of Molecular Biology and Biotechnology, Atomic Energy Commission of Syria (AECS), Damascus P.O. Box 6091, Syria;
- Department of Biology and Medical Science, Faculty of Pharmacy, International University for Science and Technology (IUST), Damascus, Syria
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Varricchi G, Brightling CE, Grainge C, Lambrecht BN, Chanez P. Airway remodelling in asthma and the epithelium: on the edge of a new era. Eur Respir J 2024; 63:2301619. [PMID: 38609094 PMCID: PMC11024394 DOI: 10.1183/13993003.01619-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 02/15/2024] [Indexed: 04/14/2024]
Abstract
Asthma is a chronic, heterogeneous disease of the airways, often characterised by structural changes known collectively as airway remodelling. In response to environmental insults, including pathogens, allergens and pollutants, the epithelium can initiate remodelling via an inflammatory cascade involving a variety of mediators that have downstream effects on both structural and immune cells. These mediators include the epithelial cytokines thymic stromal lymphopoietin, interleukin (IL)-33 and IL-25, which facilitate airway remodelling through cross-talk between epithelial cells and fibroblasts, and between mast cells and airway smooth muscle cells, as well as through signalling with immune cells such as macrophages. The epithelium can also initiate airway remodelling independently of inflammation in response to the mechanical stress present during bronchoconstriction. Furthermore, genetic and epigenetic alterations to epithelial components are believed to influence remodelling. Here, we review recent advances in our understanding of the roles of the epithelium and epithelial cytokines in driving airway remodelling, facilitated by developments in genetic sequencing and imaging techniques. We also explore how new and existing therapeutics that target the epithelium and epithelial cytokines could modify airway remodelling.
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Affiliation(s)
- Gilda Varricchi
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), School of Medicine, University of Naples Federico II, WAO Center of Excellence, Naples, Italy
- Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council, Naples, Italy
- G. Varricchi and C.E. Brightling contributed equally
| | - Christopher E. Brightling
- Institute for Lung Health, NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
- G. Varricchi and C.E. Brightling contributed equally
| | - Christopher Grainge
- School of Medicine and Public Health, University of Newcastle, Callaghan, Australia
| | - Bart N. Lambrecht
- Center for Inflammation Research, Laboratory of Immunoregulation and Mucosal Immunology, VIB Center for Inflammation Research, Ghent, Belgium
| | - Pascal Chanez
- Department of Respiratory Diseases, Aix-Marseille University, Marseille, France
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4
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Potaczek DP, Bazan-Socha S, Wypasek E, Wygrecka M, Garn H. Recent Developments in the Role of Histone Acetylation in Asthma. Int Arch Allergy Immunol 2024; 185:641-651. [PMID: 38522416 DOI: 10.1159/000536460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 01/22/2024] [Indexed: 03/26/2024] Open
Abstract
BACKGROUND Epigenetic modifications are known to mediate both beneficial and unfavorable effects of environmental exposures on the development and clinical course of asthma. On the molecular level, epigenetic mechanisms participate in multiple aspects of the emerging and ongoing asthma pathology. SUMMARY Studies performed in the last several years expand our knowledge on the role of histone acetylation, a classical epigenetic mark, in the regulation of (patho)physiological processes of diverse cells playing a central role in asthma, including those belonging to the immune system (e.g., CD4+ T cells, macrophages) and lung structure (e.g., airway epithelial cells, pulmonary fibroblasts). Those studies demonstrate a number of specific histone acetylation-associated mechanisms and pathways underlying pathological processes characteristic for asthma, as well as report their modification modalities. KEY MESSAGES Dietary modulation of histone acetylation levels in the immune system might protect against the development of asthma and other allergies. Interfering with the enzymes controlling the histone acetylation status of structural lung and (local) immune cells might provide future therapeutic options for asthmatics. Despite some methodological obstacles, analysis of the histone acetylation levels might improve asthma diagnostics.
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Affiliation(s)
- Daniel P Potaczek
- Translational Inflammation Research Division and Core Facility for Single Cell Multiomics, Medical Faculty, Philipps University of Marburg, Member of the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center (UGMLC), Marburg, Germany
- Center for Infection and Genomics of the Lung (CIGL), Member of the Universities of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany
- Bioscientia MVZ Labor Mittelhessen GmbH, Giessen, Germany
| | - Stanisława Bazan-Socha
- Department of Internal Medicine, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
| | - Ewa Wypasek
- Krakow Center for Medical Research and Technology, John Paul II Hospital, Krakow, Poland
- Faculty of Medicine and Health Sciences, Andrzej Frycz Modrzewski Krakow University, Krakow, Poland
| | - Małgorzata Wygrecka
- Center for Infection and Genomics of the Lung (CIGL), Member of the Universities of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany
- Institute of Lung Health, Member of the German Center for Lung Research (DZL), Giessen, Germany
- CSL Behring Innovation GmbH, Marburg, Germany
| | - Holger Garn
- Translational Inflammation Research Division and Core Facility for Single Cell Multiomics, Medical Faculty, Philipps University of Marburg, Member of the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center (UGMLC), Marburg, Germany
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5
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López-Posadas R, Bagley DC, Pardo-Pastor C, Ortiz-Zapater E. The epithelium takes the stage in asthma and inflammatory bowel diseases. Front Cell Dev Biol 2024; 12:1258859. [PMID: 38529406 PMCID: PMC10961468 DOI: 10.3389/fcell.2024.1258859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 02/22/2024] [Indexed: 03/27/2024] Open
Abstract
The epithelium is a dynamic barrier and the damage to this epithelial layer governs a variety of complex mechanisms involving not only epithelial cells but all resident tissue constituents, including immune and stroma cells. Traditionally, diseases characterized by a damaged epithelium have been considered "immunological diseases," and research efforts aimed at preventing and treating these diseases have primarily focused on immuno-centric therapeutic strategies, that often fail to halt or reverse the natural progression of the disease. In this review, we intend to focus on specific mechanisms driven by the epithelium that ensure barrier function. We will bring asthma and Inflammatory Bowel Diseases into the spotlight, as we believe that these two diseases serve as pertinent examples of epithelium derived pathologies. Finally, we will argue how targeting the epithelium is emerging as a novel therapeutic strategy that holds promise for addressing these chronic diseases.
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Affiliation(s)
- Rocío López-Posadas
- Department of Medicine 1, University Hospital of Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Deutsches Zentrum für Immuntherapie, Friedrich-Alexander-Universtiy Eralngen-Nürnberg, Erlangen, Germany
| | - Dustin C. Bagley
- Randall Centre for Cell and Molecular Biophysics, New Hunt’s House, School of Basic and Medical Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
| | - Carlos Pardo-Pastor
- Randall Centre for Cell and Molecular Biophysics, New Hunt’s House, School of Basic and Medical Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
| | - Elena Ortiz-Zapater
- Department of Biochemistry and Molecular Biology, Universitat de Valencia, Valencia, Spain
- Instituto Investigación Hospital Clínico-INCLIVA, Valencia, Spain
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Sudhadevi T, Ackerman SJ, Jafri A, Basa P, Ha AW, Natarajan V, Harijith A. Sphingosine kinase 1-specific inhibitor PF543 reduces goblet cell metaplasia of bronchial epithelium in an acute asthma model. Am J Physiol Lung Cell Mol Physiol 2024; 326:L377-L392. [PMID: 38290992 DOI: 10.1152/ajplung.00269.2023] [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: 08/22/2023] [Revised: 01/16/2024] [Accepted: 01/21/2024] [Indexed: 02/01/2024] Open
Abstract
Sphingosine kinase 1 (SPHK1) has been shown to play a key role in the pathogenesis of asthma where SPHK1-generated sphingosine-1-phosphate (S1P) is known to mediate innate and adaptive immunity while promoting mast cell degranulation. Goblet cell metaplasia (GCM) contributes to airway obstruction in asthma and has been demonstrated in animal models. We investigated the role of PF543, a SPHK1-specific inhibitor, in preventing the pathogenesis of GCM using a murine (C57BL/6) model of allergen-induced acute asthma. Treatment with PF543 before triple allergen exposure (DRA: House dust mite, Ragweed pollen, and Aspergillus) reduced inflammation, eosinophilic response, and GCM followed by reduced airway hyperreactivity to intravenous methacholine. Furthermore, DRA exposure was associated with increased expression of SPHK1 in the airway epithelium which was reduced by PF543. DRA-induced reduction of acetylated α-tubulin in airway epithelium was associated with an increased expression of NOTCH2 and SPDEF which was prevented by PF543. In vitro studies using human primary airway epithelial cells showed that inhibition of SPHK1 using PF543 prevented an allergen-induced increase of both NOTCH2 and SPDEF. siRNA silencing of SPHK1 prevented the allergen-induced increase of both NOTCH2 and SPDEF. NOTCH2 silencing was associated with a reduction of SPDEF but not that of SPHK1 upon allergen exposure. Our studies demonstrate that inhibition of SPHK1 protected allergen-challenged airways by preventing GCM and airway hyperreactivity, associated with downregulation of the NOTCH2-SPDEF signaling pathway. This suggests a potential novel link between SPHK1, GCM, and airway remodeling in asthma.NEW & NOTEWORTHY The role of SPHK1-specific inhibitor, PF543, in preventing goblet cell metaplasia (GCM) and airway hyperreactivity (AHR) is established in an allergen-induced mouse model. This protection was associated with the downregulation of NOTCH2-SPDEF signaling pathway, suggesting a novel link between SPHK1, GCM, and AHR.
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Affiliation(s)
- Tara Sudhadevi
- Department of Pediatrics, Case Western Reserve University, Cleveland, Ohio, United States
| | - Steven J Ackerman
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, Chicago, Illinois, United States
| | - Anjum Jafri
- Department of Genetics and Genome Sciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio, United States
| | - Prathima Basa
- Department of Pediatrics, Case Western Reserve University, Cleveland, Ohio, United States
| | - Alison W Ha
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, Chicago, Illinois, United States
| | - Viswanathan Natarajan
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago, Chicago, Illinois, United States
- Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, United States
| | - Anantha Harijith
- Department of Pediatrics, Case Western Reserve University, Cleveland, Ohio, United States
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Sleziak J, Gawor A, Błażejewska M, Antosz K, Gomułka K. ADAM33's Role in Asthma Pathogenesis: An Overview. Int J Mol Sci 2024; 25:2318. [PMID: 38396994 PMCID: PMC10889317 DOI: 10.3390/ijms25042318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/11/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
Asthma is a complex chronic respiratory disease characterized by airway hyperresponsiveness, inflammation, and obstruction. Many genes have been identified as associated with asthma but none with such substantial significance as the ADAM33 gene due to its role in airway remodeling and bronchial hyperresponsiveness. This review summarizes the current knowledge on the genetic and functional aspects of ADAM33 in asthma pathogenesis. We highlight its genetic variants associated with asthma susceptibility and severity, as well as the functional effects of ADAM33 on airway remodeling, smooth muscle cell proliferation, and its interplay with environmental factors. Additionally, we discuss the potential clinical implications of ADAM33 as a therapeutic target for asthma management.
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Affiliation(s)
- Jakub Sleziak
- Student Research Group of Internal Medicine and Allergology, Wroclaw Medical University, 50-367 Wroclaw, Poland; (J.S.); (A.G.); (M.B.)
| | - Antoni Gawor
- Student Research Group of Internal Medicine and Allergology, Wroclaw Medical University, 50-367 Wroclaw, Poland; (J.S.); (A.G.); (M.B.)
| | - Marta Błażejewska
- Student Research Group of Internal Medicine and Allergology, Wroclaw Medical University, 50-367 Wroclaw, Poland; (J.S.); (A.G.); (M.B.)
| | - Katarzyna Antosz
- Student Research Group of Internal Medicine and Allergology, Wroclaw Medical University, 50-367 Wroclaw, Poland; (J.S.); (A.G.); (M.B.)
| | - Krzysztof Gomułka
- Department of Internal Medicine, Pneumology and Allergology, Wroclaw Medical University, 50-367 Wroclaw, Poland
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Ghosh A, Himaja A, Biswas S, Kulkarni O, Ghosh B. Advances in the Delivery and Development of Epigenetic Therapeutics for the Treatment of Cancer. Mol Pharm 2023; 20:5981-6009. [PMID: 37899551 DOI: 10.1021/acs.molpharmaceut.3c00610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Gene expression at the transcriptional level is altered by epigenetic modifications such as DNA methylation, histone methylation, and acetylation, which can upregulate, downregulate, or entirely silence genes. Pathological dysregulation of epigenetic processes can result in the development of cancer, neurological problems, metabolic disorders, and cardiovascular diseases. It is of promising therapeutic interest to find medications that target these epigenetic alterations. Despite the enormous amount of work that has been done in this area, very few molecules have been approved for clinical purposes. This article provides a comprehensive review of recent advances in epigenetic therapeutics for cancer, with a specific focus on emerging delivery and development strategies. Various delivery systems, including pro-drugs, conjugated molecules, nanoparticles (NPs), and liposomes, as well as remedial strategies such as combination therapies, and epigenetic editing, are being investigated to improve the efficacy and specificity of epigenetic drugs (epi-drugs). Furthermore, the challenges associated with available epi-drugs and the limitations of their translation into clinics have been discussed. Target selection, isoform selectivity, physiochemical properties of synthesized molecules, drug screening, and scalability of epi-drugs from preclinical to clinical fields are the major shortcomings that are addressed. This Review discusses novel strategies for the identification of new biomarkers, exploration of the medicinal chemistry of epigenetic modifiers, optimization of the dosage regimen, and design of proper clinical trials that will lead to better utilization of epigenetic modifiers over conventional therapies. The integration of these approaches holds great potential for improving the efficacy and precision of epigenetic treatments, ultimately benefiting cancer patients.
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Affiliation(s)
- Aparajita Ghosh
- Epigenetic Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science- Pilani, Hyderabad Campus, Jawahar Nagar, Medchal, Hyderabad 500078, Telangana, India
- Pharmacology Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Jawahar Nagar, Medchal, Hyderabad 500078, Telangana, India
| | - Ambati Himaja
- Epigenetic Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science- Pilani, Hyderabad Campus, Jawahar Nagar, Medchal, Hyderabad 500078, Telangana, India
| | - Swati Biswas
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Jawahar Nagar, Medchal, Hyderabad 500078, Telangana, India
| | - Onkar Kulkarni
- Pharmacology Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Jawahar Nagar, Medchal, Hyderabad 500078, Telangana, India
| | - Balaram Ghosh
- Epigenetic Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science- Pilani, Hyderabad Campus, Jawahar Nagar, Medchal, Hyderabad 500078, Telangana, India
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Almacioglu M, Keskin O, Ozkars MY, Balci SO, Kucukosmanoglu E, Pehlivan S, Keskin M. Association of childhood asthma with Gasdermin B (GSDMB) and Oromucoid-like 3 (ORMDL3) genes. North Clin Istanb 2023; 10:769-777. [PMID: 38328715 PMCID: PMC10846573 DOI: 10.14744/nci.2023.22120] [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: 11/14/2022] [Revised: 12/19/2022] [Accepted: 01/29/2023] [Indexed: 02/17/2023] Open
Abstract
OBJECTIVE Genome-length association studies have shown that Gasdermin B (GSDMB) and Orosomucoid-like 3 (ORMDL3) genes located on the long arm of chromosome 17 are associated with asthma. In this study, it was aimed to determine the possible relationship between asthma control test (ACT), exercise provocation test (ECT), and fractional nitric oxide (FENO) levels and GSDMB and ORMDL3 gene expressions. METHODS 59 asthmatic and 38 non-asthmatic children were included in the study. We divided the patient group into two subgroups as mild persistent asthma (29 patients) and moderate persistent asthma (30 patients). ORMDL3, GSDMB gene expression levels, ECT, total IgE levels, and eosinophil counts were measured in all cases. In addition, ACT and FeNO levels were measured in children with asthma. Afterward, the relationship of ORMDL3 and GSDMB gene expression coefficient changes with ECT, ACT, and FeNO was examined. RESULTS When patients with ACT ≤15 were compared with patients with ACT ≥20, ORMDL3 and GSDMB gene expressions were increased 6.74 and 11.74 times, respectively. Comparing patients with ACT ≥20 and ACT ≤15 in terms of coefficient changes (ΔCq), higher change values were observed for ΔCq ORMDL3 in patients with ACT ≤15 (p=0.015). Similarly, when patients with FENO ≤25 ppb were compared with patients with FENO >25 ppb, ORMDL3 and GSDMB gene expressions were increased by 2.93 and 3.56 times, respectively. When the coefficient changes were compared, no significant difference was found between FENO≤25 and FENO >25 patients. There was a slight negative correlation between ΔCq values and ACT score (p=0.003, r=-0.418 for ORMDL3, and p=0.016, r=-0.345 for GSDMB). In addition, we observed a statistically significant positive correlation between ORMDL3 and GSDMB gene expressions (r=0.80, p<0.001). CONCLUSION We showed that increased ORMDL3 and GSDMB gene expression levels may be associated with ACT scores, FeNO and ECT in asthma. These findings may encourage future studies with larger numbers of subjects that can use gene expression levels in various asthma phenotypes for prognostic prediction.
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Affiliation(s)
- Mehmet Almacioglu
- Department of Pediatrics, SANKO University Faculty of Medicine, Gaziantep, Turkiye
| | - Ozlem Keskin
- Department of Pediatric Allergy and Immunology, Gaziantep University Faculty of Medicine, Gaziantep, Turkiye
| | - Mehmet Yasar Ozkars
- Department of Pediatric Allergy and Immunology, Gaziantep University Faculty of Medicine, Gaziantep, Turkiye
| | - Sibel Oguzkan Balci
- Department of Biology, Gaziantep University Faculty of Medicine, Gaziantep, Turkiye
| | - Ercan Kucukosmanoglu
- Department of Pediatric Allergy and Immunology, Gaziantep University Faculty of Medicine, Gaziantep, Turkiye
| | - Sacide Pehlivan
- Department of Biology, Istanbul University Faculty of Medicine, Istanbul, Turkiye
| | - Mehmet Keskin
- Department of Pediatrics, Gaziantep University Faculty of Medicine, Gaziantep, Turkiye
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Shang L, Du Y, Zhao Y, Zhang Y, Liu C. The Interaction of OTUB1 and TRAF3 Mediates NLRP3 Inflammasome Activity to Regulate TGF-β1-induced BEAS-2B Cell Injury. Appl Biochem Biotechnol 2023; 195:7060-7074. [PMID: 36976509 DOI: 10.1007/s12010-023-04434-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2023] [Indexed: 03/29/2023]
Abstract
Asthma is a frequently chronic respiratory disease with inflammation and remodeling in the airway. OTUB1 has been reported to be associated with pulmonary diseases. However, the role and potential mechanism of OTUB1 in asthma remain unclear. The expressions of OTUB1 in the bronchial mucosal tissues of asthmatic children and TGF-β1-induced BEAS-2B cells were determined. The biological behaviors were assessed in an asthma in vitro model using a loss-function approach. The contents of inflammatory cytokines were detected by ELISA kits. The related protein expressions were performed using western blot assay. Besides, the interaction between OTUB1 and TRAF3 was detected by Co-IP and ubiquitination assays. Our results showed that OTUB1 level was increased in asthmatic bronchial mucosal tissues and TGF-β1-induced BEAS-2B cells. OTUB1 knockdown promoted proliferation, inhibited apoptosis and EMT of TGF-β1-treated cells. The inhibition of OTUB1 attenuated the TGF-β1-induced inflammation and remodeling. Furthermore, OTUB1 knockdown inhibited the deubiquitination of TRAF3 and further suppressed the activation of NLRP3 inflammasome. The overexpression of TRAF3 or NLRP3 reversed the positive role of OTUB1 knockdown in TGF-β1-induced cells injury. Collectively, OTUB1 deubiquitinates TRAF3 to activate NLRP3 inflammasome, thereby leading to inflammation and remodeling of TGF-β1-induced cells, and further promoting the pathogenesis of asthma.
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Affiliation(s)
- Liqun Shang
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Yujie Du
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Yali Zhao
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Yongqing Zhang
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Cuicui Liu
- Department of Respiratory and Asthma, Xi'an Children's Hospital, Xi'an, 710003, Shaanxi, China.
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11
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Chatziparasidis G, Bush A, Chatziparasidi MR, Kantar A. Airway epithelial development and function: A key player in asthma pathogenesis? Paediatr Respir Rev 2023; 47:51-61. [PMID: 37330410 DOI: 10.1016/j.prrv.2023.04.005] [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: 02/05/2023] [Revised: 04/07/2023] [Accepted: 04/25/2023] [Indexed: 06/19/2023]
Abstract
Though asthma is a common and relatively easy to diagnose disease, attempts at primary or secondary prevention, and cure, have been disappointing. The widespread use of inhaled steroids has dramatically improved asthma control but has offered nothing in terms of altering long-term outcomes or reversing airway remodeling and impairment in lung function. The inability to cure asthma is unsurprising given our limited understanding of the factors that contribute to disease initiation and persistence. New data have focused on the airway epithelium as a potentially key factor orchestrating the different stages of asthma. In this review we summarize for the clinician the current evidence on the central role of the airway epithelium in asthma pathogenesis and the factors that may alter epithelial integrity and functionality.
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Affiliation(s)
- Grigorios Chatziparasidis
- Paediatric Respiratory Unit, IASO Hospital, Larissa, Thessaly, Greece; Faculty of Nursing, Thessaly University, Greece.
| | - Andrew Bush
- National Heart and Lung Institute, Royal Brompton & Harefield NHS Foundation Trust, London, UK
| | | | - Ahmad Kantar
- Pediatric Asthma and Cough Centre, Instituti Ospedalieri Bergamaschi, University and Research Hospitals, Bergamo, Italy
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12
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Liu HB, Bai J, Wang WX. CST1 promotes the proliferation and migration of PDGF-BB-treated airway smooth muscle cells via the PI3K/AKT signaling pathway. Kaohsiung J Med Sci 2023; 39:145-153. [PMID: 36354198 DOI: 10.1002/kjm2.12619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 10/10/2022] [Accepted: 10/17/2022] [Indexed: 11/11/2022] Open
Abstract
Typically, airway remodeling caused by migration and proliferation of airway smooth muscle cells (ASMCs) plays a crucial role in the pathophysiological characteristics of asthma development. Cystatin 1 (CST1), a protein-coding gene referred to as Cystatin SN, is highly expressed in asthma patients. However, the role of CST1 and related molecular mechanisms in the development of asthma remains to be explored. This study aims to investigate the role of CST1 in asthma progression and present related molecular mechanisms. To explore these aspects, human ASMCs with platelet-derived growth factor BB (PDGF-BB) are initially stimulated and applied as a cellular model of asthma. Further, CST1 is knocked down with small interfering ribose nucleic acid (siRNA) overexpressed with plasmids. Then, 5-ethynyl-2'-deoxyuridine (EdU) and Cell Count Kit (CCK)-8 assays are applied to assess the cell proliferation rates. Further, Transwell and Western blot analyses for migration of cells and expression of MMP1 and MMP9 proteins are assessed, respectively. Under PDGF-BB stimulation, human ASMCs showed an increased CST1 expression, enhanced proliferation, and migration abilities, as well as up-regulated PI3K/AKT signaling pathway. Further, knockdown or overexpression of CST1 presented the declined or enhanced proliferation, migration, and up-regulation of the PI3K/AKT signaling pathway of human ASMCs. Inhibiting PI3K/AKT signaling pathway displayed the reduced migration and proliferation of human ASMCs. In summary, these findings indicated that CST1 played an essential role in the progression of asthma by activating the PI3K/AKT signaling pathway and promoting the migration and proliferation abilities of human ASMCs treated with PDGF-BB.
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Affiliation(s)
- Hong-Bo Liu
- Department of Paediatrics, Yantai Yuhuangding Hospital, Yantai, China
| | - Juan Bai
- Department of Paediatrics, Yantai Yeda Hospital, Yantai, China
| | - Wen-Xiao Wang
- Department of Paediatrics, Yantai Yuhuangding Hospital, Yantai, China
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13
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Hsieh A, Assadinia N, Hackett TL. Airway remodeling heterogeneity in asthma and its relationship to disease outcomes. Front Physiol 2023; 14:1113100. [PMID: 36744026 PMCID: PMC9892557 DOI: 10.3389/fphys.2023.1113100] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/05/2023] [Indexed: 01/20/2023] Open
Abstract
Asthma affects an estimated 262 million people worldwide and caused over 461,000 deaths in 2019. The disease is characterized by chronic airway inflammation, reversible bronchoconstriction, and airway remodeling. Longitudinal studies have shown that current treatments for asthma (inhaled bronchodilators and corticosteroids) can reduce the frequency of exacerbations, but do not modify disease outcomes over time. Further, longitudinal studies in children to adulthood have shown that these treatments do not improve asthma severity or fixed airflow obstruction over time. In asthma, fixed airflow obstruction is caused by remodeling of the airway wall, but such airway remodeling also significantly contributes to airway closure during bronchoconstriction in acute asthmatic episodes. The goal of the current review is to understand what is known about the heterogeneity of airway remodeling in asthma and how this contributes to the disease process. We provide an overview of the existing knowledge on airway remodeling features observed in asthma, including loss of epithelial integrity, mucous cell metaplasia, extracellular matrix remodeling in both the airways and vessels, angiogenesis, and increased smooth muscle mass. While such studies have provided extensive knowledge on different aspects of airway remodeling, they have relied on biopsy sampling or pathological assessment of lungs from fatal asthma patients, which have limitations for understanding airway heterogeneity and the entire asthma syndrome. To further understand the heterogeneity of airway remodeling in asthma, we highlight the potential of in vivo imaging tools such as computed tomography and magnetic resonance imaging. Such volumetric imaging tools provide the opportunity to assess the heterogeneity of airway remodeling within the whole lung and have led to the novel identification of heterogenous gas trapping and mucus plugging as important predictors of patient outcomes. Lastly, we summarize the current knowledge of modification of airway remodeling with available asthma therapeutics to highlight the need for future studies that use in vivo imaging tools to assess airway remodeling outcomes.
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Affiliation(s)
- Aileen Hsieh
- Centre for Heart Lung Innovation, St. Paul’s Hospital, Vancouver, BC, Canada,Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Najmeh Assadinia
- Centre for Heart Lung Innovation, St. Paul’s Hospital, Vancouver, BC, Canada,Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Tillie-Louise Hackett
- Centre for Heart Lung Innovation, St. Paul’s Hospital, Vancouver, BC, Canada,Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC, Canada,*Correspondence: Tillie-Louise Hackett,
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14
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Yüksel H, Tunca S. Destiny of airway disease: interplay between epithelial barrier and the innate immune system. Tissue Barriers 2022; 10:2020706. [PMID: 34965848 PMCID: PMC9624204 DOI: 10.1080/21688370.2021.2020706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
When the organism encounters a foreign substance, it responds with mutual and regular interactions at different stages of the immune system. In airway diseases, the first encounter is at the epithelial level, where innate immune cells and their responses form the first leg of the protective mechanism. The most important barrier for environmental damage is the epithelial barrier. However, the epithelial barrier is not just a mechanical barrier. The formation of the microbiome on the epithelium and the tolerance or intolerance to environmental factors are vital. This vital balance is maintained between the epithelial surface and the subepithelial innate immune system. This is achieved by the epithelial line, which is a mechanical and functional barrier between them. In this respect, epithelial barrier function preservation has an important role in the development and prognosis of airway disease.
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Affiliation(s)
- Hasan Yüksel
- Faculty of Medicine, Department of Pediatric Pulmonology, Celal Bayar University, Manisa, Turkey,CONTACT Hasan Yüksel Faculty of Medicine; Department of Pediatric Pulmonology, Celal Bayar University, Manisa, Turkey
| | - Seda Tunca
- Faculty of Medicine, Department of Pediatric Allergy and Immunoogy, Celal Bayar University, Manisa, Turkey
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15
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Boateng E, Kovacevic D, Oldenburg V, Rådinger M, Krauss-Etschmann S. Role of airway epithelial cell miRNAs in asthma. FRONTIERS IN ALLERGY 2022; 3:962693. [PMID: 36203653 PMCID: PMC9530201 DOI: 10.3389/falgy.2022.962693] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 09/01/2022] [Indexed: 12/07/2022] Open
Abstract
The airway epithelial cells and overlying layer of mucus are the first point of contact for particles entering the lung. The severity of environmental contributions to pulmonary disease initiation, progression, and exacerbation is largely determined by engagement with the airway epithelium. Despite the cellular cross-talk and cargo exchange in the microenvironment, epithelial cells produce miRNAs associated with the regulation of airway features in asthma. In line with this, there is evidence indicating miRNA alterations related to their multifunctional regulation of asthma features in the conducting airways. In this review, we discuss the cellular components and functions of the airway epithelium in asthma, miRNAs derived from epithelial cells in disease pathogenesis, and the cellular exchange of miRNA-bearing cargo in the airways.
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Affiliation(s)
- Eistine Boateng
- Early Life Origins of Chronic Lung Disease, Research Center Borstel, Leibniz Lung Center, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
- Correspondence: Eistine Boateng
| | - Draginja Kovacevic
- DZL Laboratory for Experimental Microbiome Research, Research Center Borstel, Leibniz Lung Center, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
| | - Vladimira Oldenburg
- Early Life Origins of Chronic Lung Disease, Research Center Borstel, Leibniz Lung Center, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
| | - Madeleine Rådinger
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Susanne Krauss-Etschmann
- Early Life Origins of Chronic Lung Disease, Research Center Borstel, Leibniz Lung Center, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
- DZL Laboratory for Experimental Microbiome Research, Research Center Borstel, Leibniz Lung Center, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
- Institute for Experimental Medicine, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
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16
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Moheimani F, Shahdab N, Cummings S, Hansbro PM, Ward C. Key role of dysregulated airway epithelium in response to respiratory viral infections in asthma. ERJ Open Res 2022; 8:00314-2022. [PMID: 36171982 PMCID: PMC9511154 DOI: 10.1183/23120541.00314-2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 06/29/2022] [Indexed: 12/01/2022] Open
Abstract
We congratulate Raviet al. [1] for their recent paper in ERJ Open Research, “Imprinting of bronchial epithelial cells upon in vivo rhinovirus infection in people with asthma”. We would like to discuss their study and make some contributions. A differentiated air–liquid interface model shows that the airway epithelium plays a key role in response to respiratory viral infections in people with asthmahttps://bit.ly/3yDgiX1
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17
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Yong HM, Gour N, Sharma D, Khalil SM, Lane AP, Lajoie S. Epigenetic regulation of epithelial dectin-1 through an IL-33-STAT3 axis in allergic disease. Allergy 2022; 77:207-217. [PMID: 33982290 PMCID: PMC10580706 DOI: 10.1111/all.14898] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 04/10/2021] [Accepted: 04/14/2021] [Indexed: 12/15/2022]
Abstract
Allergic diseases arise in susceptible individuals in part because of decrements in protective pathways. The mechanism by which these anti-inflammatory molecules become repressed remains unclear. We have previously reported that epithelial dectin-1 prevents aberrant type 2 responses and is downregulated in the epithelium of allergic patients. Here, we report that dectin-1 is constitutively expressed by the respiratory epithelium in humans and that IL-33 specifically acts as a repressor of dectin-1. Mechanistically, this occurs via IL-33-dependent STAT3 activation and the subsequent repression of the dectin-1 gene, CLEC7A. We have identified a novel enhancer region upstream of the proximal promoter of CLEC7A that is only accessible in epithelial cells, but not in hematopoietic cells. Epigenetic repression of CLEC7A through this newly identified locus, downstream of an aberrant IL-33-STAT3 axis, occurs in the epithelium of allergic individuals. Collectively, our data identify a mechanism of epigenetic fine-tuning of dectin-1 expression in epithelial cells that may participate in allergenicity.
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Affiliation(s)
- Hwan Mee Yong
- Department of Otolaryngology, Johns Hopkins School of Medicine, Baltimore, MD
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Naina Gour
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins School of Medicine, Baltimore, MD
| | - Deepika Sharma
- Department of Otolaryngology, Johns Hopkins School of Medicine, Baltimore, MD
| | - Syed Muaz Khalil
- Department of Otolaryngology, Johns Hopkins School of Medicine, Baltimore, MD
| | - Andrew P. Lane
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Stephane Lajoie
- Department of Otolaryngology, Johns Hopkins School of Medicine, Baltimore, MD
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
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18
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Extracellular Vesicles in Airway Homeostasis and Pathophysiology. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11219933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The epithelial–mesenchymal trophic unit (EMTU) is a morphofunctional entity involved in the maintenance of the homeostasis of airways as well as in the pathogenesis of several diseases, including asthma and chronic obstructive pulmonary disease (COPD). The “muco-microbiotic layer” (MML) is the innermost layer of airways made by microbiota elements (bacteria, viruses, archaea and fungi) and the surrounding mucous matrix. The MML homeostasis is also crucial for maintaining the healthy status of organs and its alteration is at the basis of airway disorders. Nanovesicles produced by EMTU and MML elements are probably the most important tool of communication among the different cell types, including inflammatory ones. How nanovesicles produced by EMTU and MML may affect the airway integrity, leading to the onset of asthma and COPD, as well as their putative use in therapy will be discussed here.
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19
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Roffel MP, Boudewijn IM, van Nijnatten JLL, Faiz A, Vermeulen CJ, van Oosterhout AJ, Affleck K, Timens W, Bracke KR, Maes T, Heijink IH, Brandsma CA, van den Berge M. Identification of asthma associated microRNAs in bronchial biopsies. Eur Respir J 2021; 59:13993003.01294-2021. [PMID: 34446467 DOI: 10.1183/13993003.01294-2021] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/30/2021] [Indexed: 11/05/2022]
Abstract
Changes in microRNA (miRNA) expression can contribute to the pathogenesis of many diseases, including asthma. We aimed to identify miRNAs that are differentially expressed between asthma patients and healthy controls and explored their association with clinical and inflammatory parameters of asthma.Differentially expressed miRNAs were determined by small RNA sequencing on bronchial biopsies of 79 asthma patients and 82 healthy controls using linear regression models. Differentially expressed miRNAs were associated with clinical and inflammatory asthma features. Potential miRNA-mRNA interactions were analysed using mRNA data available from the same bronchial biopsies and enrichment of pathways was identified with Enrichr and g:Profiler.In total 78 differentially expressed miRNAs were identified in bronchial biopsies of asthma patients compared to controls, of which 60 remained differentially expressed after controlling for smoke and inhaled corticosteroid treatment. We identified several asthma associated miRNAs, including miR-125b-5p and miR-223-3p, based on a significant association with multiple clinical and inflammatory asthma features and their negative correlation with genes associated with the presence of asthma. The most enriched biological pathway(s) affected by miR-125b-5p and miR-223-3p were inflammatory response and cilium assembly and organisation. Of interest, we identified that lower expression of miR-26a-5p was linked to more severe eosinophilic inflammation as measured in blood, sputum as well as bronchial biopsies. Collectively, we identified miR-125b-5p, miR-223-3p and miR-26a-5p, as potential regulators that could contribute to the pathogenesis of asthma.
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Affiliation(s)
- Mirjam P Roffel
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands.,Department of Respiratory Medicine, Ghent University, University Hospital Ghent, Laboratory for Translational Research in Obstructive Pulmonary Diseases, Ghent, Belgium
| | - Ilse M Boudewijn
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands.,Department of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jos L L van Nijnatten
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands.,Faculty of Science, Respiratory Bioinformatics and Molecular Biology (RBMB), University of Technology Sydney, Sydney, Australia
| | - Alen Faiz
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands.,Faculty of Science, Respiratory Bioinformatics and Molecular Biology (RBMB), University of Technology Sydney, Sydney, Australia
| | - Corneel J Vermeulen
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands.,Department of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Antoon J van Oosterhout
- Allergic Inflammation Discovery Performance Unit, GlaxoSmithKline, Stevenage, United Kingdom
| | - Karen Affleck
- Adaptive Immunity Research Unit, GlaxoSmithKline, Stevenage, United Kingdom
| | - Wim Timens
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
| | - Ken R Bracke
- Department of Respiratory Medicine, Ghent University, University Hospital Ghent, Laboratory for Translational Research in Obstructive Pulmonary Diseases, Ghent, Belgium
| | - Tania Maes
- Department of Respiratory Medicine, Ghent University, University Hospital Ghent, Laboratory for Translational Research in Obstructive Pulmonary Diseases, Ghent, Belgium
| | - Irene H Heijink
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands.,Department of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Corry-Anke Brandsma
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands.,Both senior authors contributed equally
| | - Maarten van den Berge
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands .,Department of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Both senior authors contributed equally
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20
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Sim S, Choi Y, Lee DH, Lee HR, Seob Shin Y, Park HS. Contribution of dipeptidyl peptidase 10 to airway dysfunction in patients with NSAID-exacerbated respiratory disease. Clin Exp Allergy 2021; 52:115-126. [PMID: 34431147 DOI: 10.1111/cea.14003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 08/22/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND Genetic variants of dipeptidyl peptidase 10 (DPP10) have been suggested to contribute to the development of NSAID-exacerbated respiratory disease (NERD). However, the mechanisms of how DPP10 contributes to NERD phenotypes remain unclear. OBJECTIVE To demonstrate the exact role of DPP10 in the pathogenesis of NERD. METHODS Patients with NERD (n = 110), those with aspirin-tolerant asthma (ATA, n = 130) and healthy control subjects (HCs, n = 80) were enrolled. Clinical characteristics were analysed according to the serum DPP10 levels in both NERD and ATA groups. The function of DPP10 in airway inflammation and remodelling was investigated with in vitro, ex vivo and in vivo experiments. RESULTS NERD patients had higher levels of serum DPP10 and TGF-β1 with lower FEV1 than ATA patients or HCs (p < .05 for each). NERD patients with higher DPP10 levels had higher TGF-β1, but lower FEV1 (p < .05 for all), whilst no differences were noted in ATA patients. Moreover, the seum DPP10 levels had a positive correlation with TGF-β1 (r = 0.384, p < .001), but a negative correlation with FEV1 (r = -0.230, p = .016) in NERD patients. In in vitro studies, expression of DPP10 in airway epithelial cells was enhanced by TGF-β1 treatments. Furthermore, DPP10 was found to be produced from immune cells and this molecule induced the ERK phosphorylation in airway epithelial cells, which was suppressed by anti-DPP10 treatment. In asthmatic mouse models, increased levels of DPP10 in the serum and TGF-β1 in the bronchoalveolar lavage fluid were noted, which were suppressed by anti-DPP10 treatment. Moreover, anti-DPP10 treatment inhibited the ERK phosphorylation and extracellular matrix deposition in the lungs. CONCLUSIONS AND CLINICAL RELEVANCE These findings suggest that increased production of DPP10 may contribute to TGF-β1-mediated airway dysfunction in NERD patients, where blockade of DPP10 may have potential benefits.
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Affiliation(s)
- Soyoon Sim
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea.,Department of Biomedical Sciences, Graduate School of Ajou University, Suwon, Korea
| | - Youngwoo Choi
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea
| | - Dong-Hyun Lee
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea
| | | | - Yoo Seob Shin
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea
| | - Hae-Sim Park
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea
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21
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Thermosensory Transient Receptor Potential Ion Channels and Asthma. Biomedicines 2021; 9:biomedicines9070816. [PMID: 34356881 PMCID: PMC8301310 DOI: 10.3390/biomedicines9070816] [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: 05/31/2021] [Revised: 07/09/2021] [Accepted: 07/12/2021] [Indexed: 12/14/2022] Open
Abstract
Asthma is a widespread chronic disease of the bronchopulmonary system with a heterogeneous course due to the complex etiopathogenesis. Natural-climatic and anthropogenic factors play an important role in the development and progression of this pathology. The reception of physical and chemical environmental stimuli and the regulation of body temperature are mediated by thermosensory channels, members of a subfamily of transient receptor potential (TRP) ion channels. It has been found that genes encoding vanilloid, ankyrin, and melastatin TRP channels are involved in the development of some asthma phenotypes and in the formation of exacerbations of this pathology. The review summarizes modern views on the role of high and low temperatures in airway inflammation in asthma. The participation of thermosensory TRP channels (vanilloid, ankyrin, and melastatin TRP channels) in the reaction to high and low temperatures and air humidity as well as in the formation of bronchial hyperreactivity and respiratory symptoms accompanying asthma is described. The genetic aspects of the functioning of thermosensory TRP channels are discussed. It is shown that new methods of treatment of asthma exacerbations caused by the influence of temperature and humidity should be based on the regulation of channel activity.
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22
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Yang Y, Jia M, Ou Y, Adcock IM, Yao X. Mechanisms and biomarkers of airway epithelial cell damage in asthma: A review. CLINICAL RESPIRATORY JOURNAL 2021; 15:1027-1045. [PMID: 34097803 DOI: 10.1111/crj.13407] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 05/17/2021] [Accepted: 06/03/2021] [Indexed: 12/15/2022]
Abstract
Bronchial asthma is a heterogeneous disease with complex pathological mechanisms representing different phenotypes, including severe asthma. The airway epithelium is a major site of complex pathological changes in severe asthma due, in part, to activation of inflammatory and immune mechanisms in response to noxious agents. Current imaging procedures are unable to accurately measure epithelial and airway remodeling. Damage of airway epithelial cells occurs is linked to specific phenotypes and endotypes which provides an opportunity for the identification of biomarkers reflecting epithelial, and airway, remodeling. Identification of patients with more severe epithelial disruption using biomarkers may also provide personalised therapeutic opportunities and/or markers of successful therapeutic intervention. Here, we review the evidence for ongoing epithelial cell dysregulation in the pathogenesis of asthma, the sentinel role of the airway epithelium and how understanding these molecular mechanisms provides the basis for the identification of candidate biomarkers for asthma prediction, prevention, diagnosis, treatment and monitoring.
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Affiliation(s)
- Yuemei Yang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Man Jia
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yingwei Ou
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Department of Emergency Medical, Zhejiang Province People's Hospital, Zhejiang, China
| | - Ian M Adcock
- Airway Disease Section, National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, UK
| | - Xin Yao
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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23
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Nur Husna SM, Tan HTT, Md Shukri N, Mohd Ashari NS, Wong KK. Nasal Epithelial Barrier Integrity and Tight Junctions Disruption in Allergic Rhinitis: Overview and Pathogenic Insights. Front Immunol 2021; 12:663626. [PMID: 34093555 PMCID: PMC8176953 DOI: 10.3389/fimmu.2021.663626] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/22/2021] [Indexed: 12/20/2022] Open
Abstract
Allergic rhinitis (AR) is a common disorder affecting up to 40% of the population worldwide and it usually persists throughout life. Nasal epithelial barrier constitutes the first line of defense against invasion of harmful pathogens or aeroallergens. Cell junctions comprising of tight junctions (TJs), adherens junctions, desmosomes and hemidesmosomes form the nasal epithelial barrier. Impairment of TJ molecules plays causative roles in the pathogenesis of AR. In this review, we describe and discuss the components of TJs and their disruption leading to development of AR, as well as regulation of TJs expression by epigenetic changes, neuro-immune interaction, epithelial-derived cytokines (thymic stromal lymphopoietin, IL-25 and IL-33), T helper 2 (Th2) cytokines (IL-4, IL-5, IL-6 and IL-13) and innate lymphoid cells. These growing evidence support the development of novel therapeutic approaches to restore nasal epithelial TJs expression in AR patients.
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Affiliation(s)
- Siti Muhamad Nur Husna
- Department of Immunology, School of Medical Sciences Malaysia, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Hern-Tze Tina Tan
- Department of Immunology, School of Medical Sciences Malaysia, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Norasnieda Md Shukri
- Hospital Universiti Sains Malaysia, Kubang Kerian, Malaysia.,Department of Otorhinolaryngology, Head and Neck Surgery, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Noor Suryani Mohd Ashari
- Department of Immunology, School of Medical Sciences Malaysia, Universiti Sains Malaysia, Kubang Kerian, Malaysia.,Hospital Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Kah Keng Wong
- Department of Immunology, School of Medical Sciences Malaysia, Universiti Sains Malaysia, Kubang Kerian, Malaysia.,Hospital Universiti Sains Malaysia, Kubang Kerian, Malaysia
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24
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Käck U, Einarsdottir E, van Hage M, Asarnoj A, James A, Nopp A, Krjutškov K, Katayama S, Kere J, Lilja G, Söderhäll C, Konradsen JR. Nasal upregulation of CST1 in dog-sensitised children with severe allergic airway disease. ERJ Open Res 2021; 7:00917-2020. [PMID: 33898616 DOI: 10.1183/23120541.00917-2020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 01/27/2021] [Indexed: 12/27/2022] Open
Abstract
Background The clinical presentation of children sensitised to dog dander varies from asymptomatic to severe allergic airway disease, but the genetic mechanisms underlying these differences are not clear. The objective of the present study was to investigate nasal transcriptomic profiles associated with dog dander sensitisation in school children and to reveal clinical symptoms related with these profiles. Methods RNA was extracted from nasal epithelial cell brushings of children sensitised to dog dander and healthy controls. Blood sample analyses included IgE against dog dander, dog allergen molecules, other airborne and food allergens, basophil activation and white blood cell counts. Clinical history of asthma and rhinitis was recorded, and lung function was assessed (spirometry, methacholine provocation and exhaled nitric oxide fraction). Results The most overexpressed gene in children sensitised to dog dander compared to healthy controls was CST1, coding for Cystatin 1. A cluster of these children with enhanced CST1 expression showed lower forced expiratory volume in 1 s, increased bronchial hyperreactivity, pronounced eosinophilia and higher basophil allergen threshold sensitivity compared with other children sensitised to dog dander. In addition, multi-sensitisation to lipocalins was more common in this group. Conclusions Overexpression of CST1 is associated with more severe allergic airway disease in children sensitised to dog dander. CST1 is thus a possible biomarker of the severity of allergic airway disease and a possible therapeutic target for the future treatment of airborne allergy.
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Affiliation(s)
- Ulrika Käck
- Dept of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Sach's Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Elisabet Einarsdottir
- Dept of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden.,Science for Life Laboratory, Department of Gene Technology, KTH-Royal Institute of Technology, Solna, Sweden.,Folkhälsan Research Center, Helsinki, Finland
| | - Marianne van Hage
- Dept of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Anna Asarnoj
- Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden.,Dept of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Anna James
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Anna Nopp
- Dept of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Sach's Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Kaarel Krjutškov
- Dept of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden.,Department of Obstetrics and Gynecology, University of Tartu, Tartu, Estonia.,Competence Centre on Health Technologies, Tartu, Estonia
| | - Shintaro Katayama
- Dept of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden.,Folkhälsan Research Center, Helsinki, Finland.,University of Helsinki, Stem Cells and Metabolism Research Program, Helsinki, Finland
| | - Juha Kere
- Dept of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden.,Folkhälsan Research Institute, and Stem Cell and Metabolism Research Program, University of Helsinki, Helsinki, Finland
| | - Gunnar Lilja
- Dept of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Sach's Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Cilla Söderhäll
- Dept of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden.,Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden.,Dept of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,These authors contributed equally
| | - Jon R Konradsen
- Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden.,Dept of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,These authors contributed equally
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25
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Saikumar Jayalatha AK, Hesse L, Ketelaar ME, Koppelman GH, Nawijn MC. The central role of IL-33/IL-1RL1 pathway in asthma: From pathogenesis to intervention. Pharmacol Ther 2021; 225:107847. [PMID: 33819560 DOI: 10.1016/j.pharmthera.2021.107847] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 03/18/2021] [Indexed: 02/06/2023]
Abstract
Interleukin-33 (IL-33), a member of the IL-1 family, and its cognate receptor, Interleukin-1 receptor like-1 (IL-1RL1 or ST2), are susceptibility genes for childhood asthma. In response to cellular damage, IL-33 is released from barrier tissues as an 'alarmin' to activate the innate immune response. IL-33 drives type 2 responses by inducing signalling through its receptor IL-1RL1 in several immune and structural cells, thereby leading to type 2 cytokine and chemokine production. IL-1RL1 gene transcript encodes different isoforms generated through alternative splicing. Its soluble isoform, IL-1RL1-a or sST2, acts as a decoy receptor by sequestering IL-33, thereby inhibiting IL1RL1-b/IL-33 signalling. IL-33 and its receptor IL-1RL1 are therefore considered as putative biomarkers or targets for pharmacological intervention in asthma. This review will provide an overview of the genetics and biology of the IL-33/IL-1RL1 pathway in the context of asthma pathogenesis. It will discuss the potential and complexities of targeting the cytokine or its receptor, how genetics or biomarkers may inform precision medicine for asthma targeting this pathway, and the possible positioning of therapeutics targeting IL-33 or its receptor in the expanding landscape of novel biologicals applied in asthma management.
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Affiliation(s)
- A K Saikumar Jayalatha
- University of Groningen, University Medical Centre Groningen, Department of Pathology and Medical Biology, Laboratory of Experimental Pulmonology and Inflammation Research (EXPIRE), Groningen, the Netherlands; University of Groningen University Medical Centre Groningen, Groningen Research Institute for Asthma and COPD, Groningen, the Netherlands
| | - L Hesse
- University of Groningen, University Medical Centre Groningen, Department of Pathology and Medical Biology, Laboratory of Experimental Pulmonology and Inflammation Research (EXPIRE), Groningen, the Netherlands; University of Groningen University Medical Centre Groningen, Groningen Research Institute for Asthma and COPD, Groningen, the Netherlands
| | - M E Ketelaar
- University of Groningen, University Medical Centre Groningen, Department of Pathology and Medical Biology, Laboratory of Experimental Pulmonology and Inflammation Research (EXPIRE), Groningen, the Netherlands; University of Groningen University Medical Centre Groningen, Groningen Research Institute for Asthma and COPD, Groningen, the Netherlands; University of Groningen University Medical Centre Groningen, Beatrix Children's Hospital, Department of Paediatric Pulmonology and Paediatric Allergology, Groningen, the Netherlands
| | - G H Koppelman
- University of Groningen University Medical Centre Groningen, Groningen Research Institute for Asthma and COPD, Groningen, the Netherlands; University of Groningen University Medical Centre Groningen, Beatrix Children's Hospital, Department of Paediatric Pulmonology and Paediatric Allergology, Groningen, the Netherlands
| | - M C Nawijn
- University of Groningen, University Medical Centre Groningen, Department of Pathology and Medical Biology, Laboratory of Experimental Pulmonology and Inflammation Research (EXPIRE), Groningen, the Netherlands; University of Groningen University Medical Centre Groningen, Groningen Research Institute for Asthma and COPD, Groningen, the Netherlands.
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26
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Ntontsi P, Photiades A, Zervas E, Xanthou G, Samitas K. Genetics and Epigenetics in Asthma. Int J Mol Sci 2021; 22:ijms22052412. [PMID: 33673725 PMCID: PMC7957649 DOI: 10.3390/ijms22052412] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/04/2021] [Accepted: 02/22/2021] [Indexed: 12/11/2022] Open
Abstract
Asthma is one of the most common respiratory disease that affects both children and adults worldwide, with diverse phenotypes and underlying pathogenetic mechanisms poorly understood. As technology in genome sequencing progressed, scientific efforts were made to explain and predict asthma’s complexity and heterogeneity, and genome-wide association studies (GWAS) quickly became the preferred study method. Several gene markers and loci associated with asthma susceptibility, atopic and childhood-onset asthma were identified during the last few decades. Markers near the ORMDL3/GSDMB genes were associated with childhood-onset asthma, interleukin (IL)33 and IL1RL1 SNPs were associated with atopic asthma, and the Thymic Stromal Lymphopoietin (TSLP) gene was identified as protective against the risk to TH2-asthma. The latest efforts and advances in identifying and decoding asthma susceptibility are focused on epigenetics, heritable characteristics that affect gene expression without altering DNA sequence, with DNA methylation being the most described mechanism. Other less studied epigenetic mechanisms include histone modifications and alterations of miR expression. Recent findings suggest that the DNA methylation pattern is tissue and cell-specific. Several studies attempt to describe DNA methylation of different types of cells and tissues of asthmatic patients that regulate airway remodeling, phagocytosis, and other lung functions in asthma. In this review, we attempt to briefly present the latest advancements in the field of genetics and mainly epigenetics concerning asthma susceptibility.
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Affiliation(s)
- Polyxeni Ntontsi
- 7th Respiratory Medicine Department and Asthma Center, Athens Chest Hospital “Sotiria”, 11527 Athens, Greece; (P.N.); (A.P.); (E.Z.)
| | - Andreas Photiades
- 7th Respiratory Medicine Department and Asthma Center, Athens Chest Hospital “Sotiria”, 11527 Athens, Greece; (P.N.); (A.P.); (E.Z.)
| | - Eleftherios Zervas
- 7th Respiratory Medicine Department and Asthma Center, Athens Chest Hospital “Sotiria”, 11527 Athens, Greece; (P.N.); (A.P.); (E.Z.)
| | - Georgina Xanthou
- Cellular Immunology Laboratory, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece;
| | - Konstantinos Samitas
- 7th Respiratory Medicine Department and Asthma Center, Athens Chest Hospital “Sotiria”, 11527 Athens, Greece; (P.N.); (A.P.); (E.Z.)
- Cellular Immunology Laboratory, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece;
- Correspondence: ; Tel.: +30-210-778-1720
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27
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Wang W, Yang Z, Li M, Wang Z, Shan Y, Qu Z. Six1 Promotes Epithelial-Mesenchymal Transition in Bronchial Epithelial Cells via the TGFβ1/Smad Signalling Pathway. Int Arch Allergy Immunol 2021; 182:479-488. [PMID: 33631753 DOI: 10.1159/000512873] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/09/2020] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION The homeodomain transcription factor sine oculis homeobox homolog 1 (Six1) plays a crucial role in embryogenesis and is not expressed in normal adult tissue but is expressed in many pathological processes, including airway remodelling in asthma. The current study aimed to reveal the effects of Six1 in regulating the airway remodelling and its possible mechanism. METHODS A mouse model of ovalbumin-induced asthma-associated airway wall remodelling and a bronchial epithelial cell (16HBE) model of transforming growth factor β1 (TGFβ1)-induced epithelial-mesenchymal transition (EMT) were used to investigate the role of Six1. Then, 16HBE cells were transformed with Six1 expression vectors and treated with a TGFβ1 pathway inhibitor to determine the role of Six1 in EMT. The effect of Six1 and its possible mechanism were assessed by immunohistochemistry, RT-PCR, and Western blot. RESULTS Six1 expression was elevated in the lungs in an OVA mouse model of allergic asthma and in 16HBE cells treated with TGFβ1. Six1 overexpression promoted an EMT-like phenotype with a decreased protein expression of E-cadherin and increased protein expression of α-smooth muscle actin (α-SMA) as well as fibronectin in 16HBE cells; these effects appeared to promote TGFβ1 and phospho-Smad2 (pSmad2) production, which are the main products of the TGFβ1/Smad signalling pathway, which could be reduced by a TGFβ1 inhibitor. CONCLUSION These data reveal that Six1 and TGFβ1 are potentially a part of an autocrine feedback loop that induces EMT, and these factors can be reduced by blocking the TGFβ1/Smad signalling pathway. As such, these factors may represent a promising novel therapeutic target for airway remodelling in asthma.
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Affiliation(s)
- Wenxin Wang
- Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, China.,Department of Gastroenterology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zhaochuan Yang
- Department of Child Health Care, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Meixiang Li
- Department of Pediatrics, Municipal Hospital of Heze, Heze, China
| | - Zhenhong Wang
- Education and Training Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yanchun Shan
- Department of Child Health Care, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Zhenghai Qu
- Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, China,
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28
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Ravi A, Goorsenberg AWM, Dijkhuis A, Dierdorp BS, Dekker T, van Weeghel M, Sabogal Piñeros YS, Shah PL, Ten Hacken NHT, Annema JT, Sterk PJ, Vaz FM, Bonta PI, Lutter R. Metabolic differences between bronchial epithelium from healthy individuals and patients with asthma and the effect of bronchial thermoplasty. J Allergy Clin Immunol 2021; 148:1236-1248. [PMID: 33556463 DOI: 10.1016/j.jaci.2020.12.653] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 11/23/2020] [Accepted: 12/01/2020] [Indexed: 01/27/2023]
Abstract
BACKGROUND Asthma is a heterogeneous disease with differences in onset, severity, and inflammation. Bronchial epithelial cells (BECs) contribute to asthma pathophysiology. OBJECTIVE We determined whether transcriptomes of BECs reflect heterogeneity in inflammation and severity in asthma, and whether this was affected in BECs from patients with severe asthma after their regeneration by bronchial thermoplasty. METHODS RNA sequencing was performed on BECs obtained by bronchoscopy from healthy controls (n = 16), patients with mild asthma (n = 17), patients with moderate asthma (n = 5), and patients with severe asthma (n = 17), as well as on BECs from treated and untreated airways of the latter (also 6 months after bronchial thermoplasty) (n = 23). Lipidome and metabolome analyses were performed on cultured BECs from healthy controls (n = 7); patients with severe asthma (n = 9); and, for comparison, patients with chronic obstructive pulmonary disease (n = 7). RESULTS Transcriptome analysis of BECs from patients showed a reduced expression of oxidative phosphorylation (OXPHOS) genes, most profoundly in patients with severe asthma but less profoundly and more heterogeneously in patients with mild asthma. Genes related to fatty acid metabolism were significantly upregulated in asthma. Lipidomics revealed enhanced levels of lipid species (phosphatidylcholines, lysophosphatidylcholines. and bis(monoacylglycerol)phosphate), whereas levels of OXPHOS metabolites were reduced in BECs from patients with severe asthma. BECs from patients with mild asthma characterized by hyperresponsive production of mediators implicated in neutrophilic inflammation had decreased expression of OXPHOS genes compared with that in BECs from patients with mild asthma with normoresponsive production. BECs obtained after thermoplasty had significantly increased expression of OXPHOS genes and decreased expression of fatty acid metabolism genes compared with BECs obtained from untreated airways. CONCLUSION BECs in patients with asthma are metabolically different from those in healthy individuals. These differences are linked with inflammation and asthma severity, and they can be reversed by bronchial thermoplasty.
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Affiliation(s)
- Abilash Ravi
- Department of Respiratory Medicine, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
| | - Annika W M Goorsenberg
- Department of Respiratory Medicine, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Annemiek Dijkhuis
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Barbara S Dierdorp
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Tamara Dekker
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Michel van Weeghel
- Laboratory Genetic Metabolic Diseases, Core Facility Metabolomics, Department of Clinical Chemistry, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Yanaika S Sabogal Piñeros
- Department of Respiratory Medicine, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Pallav L Shah
- Royal Brompton Hospital, London, United Kingdom; National Heart and Lung Institute, Imperial College, London, United Kingdom; Chelsea and Westminster Hospital, London, United Kingdom
| | - Nick H T Ten Hacken
- Department of Pulmonology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Jouke T Annema
- Department of Respiratory Medicine, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Peter J Sterk
- Department of Respiratory Medicine, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Frédéric M Vaz
- Laboratory Genetic Metabolic Diseases, Core Facility Metabolomics, Department of Clinical Chemistry, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Peter I Bonta
- Department of Respiratory Medicine, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - René Lutter
- Department of Respiratory Medicine, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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29
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McErlean P, Kelly A, Dhariwal J, Kirtland M, Watson J, Ranz I, Smith J, Saxena A, Cousins DJ, Van Oosterhout A, Solari R, Edwards MR, Johnston SL, Lavender P. Profiling of H3K27Ac Reveals the Influence of Asthma on the Epigenome of the Airway Epithelium. Front Genet 2020; 11:585746. [PMID: 33362848 PMCID: PMC7758344 DOI: 10.3389/fgene.2020.585746] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 11/03/2020] [Indexed: 12/17/2022] Open
Abstract
Background Asthma is a chronic airway disease driven by complex genetic–environmental interactions. The role of epigenetic modifications in bronchial epithelial cells (BECs) in asthma is poorly understood. Methods We piloted genome-wide profiling of the enhancer-associated histone modification H3K27ac in BECs from people with asthma (n = 4) and healthy controls (n = 3). Results We identified n = 4,321 (FDR < 0.05) regions exhibiting differential H3K27ac enrichment between asthma and health, clustering at genes associated predominately with epithelial processes (EMT). We identified initial evidence of asthma-associated Super-Enhancers encompassing genes encoding transcription factors (TP63) and enzymes regulating lipid metabolism (PTGS1). We integrated published datasets to identify epithelium-specific transcription factors associated with H3K27ac in asthma (TP73) and identify initial relationships between asthma-associated changes in H3K27ac and transcriptional profiles. Finally, we investigated the potential of CRISPR-based approaches to functionally evaluate H3K27ac-asthma landscape in vitro by identifying guide-RNAs capable of targeting acetylation to asthma DERs and inducing gene expression (TLR3). Conclusion Our small pilot study validates genome-wide approaches for deciphering epigenetic mechanisms underlying asthma pathogenesis in the airways.
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Affiliation(s)
- Peter McErlean
- Peter Gorer Department of Immunobiology, King's College London, London, United Kingdom.,Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom
| | - Audrey Kelly
- Peter Gorer Department of Immunobiology, King's College London, London, United Kingdom.,Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom
| | - Jaideep Dhariwal
- Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom.,Airway Disease Infection Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Max Kirtland
- Peter Gorer Department of Immunobiology, King's College London, London, United Kingdom.,Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom
| | - Julie Watson
- Peter Gorer Department of Immunobiology, King's College London, London, United Kingdom.,Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom
| | - Ismael Ranz
- Peter Gorer Department of Immunobiology, King's College London, London, United Kingdom.,Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom
| | - Janet Smith
- GlaxoSmithKline Allergic Inflammation Discovery Performance Unit, Respiratory Therapy Area, Stevenage, United Kingdom
| | - Alka Saxena
- Genomics Platform, Biomedical Research Centre at Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - David J Cousins
- Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom.,National Institute for Health Research (NIHR) Respiratory Biomedical Research Unit, Department of Infection, Immunity & Inflammation, Leicester Institute for Lung Health, University of Leicester, Leicester, United Kingdom
| | - Antoon Van Oosterhout
- GlaxoSmithKline Allergic Inflammation Discovery Performance Unit, Respiratory Therapy Area, Stevenage, United Kingdom
| | - Roberto Solari
- Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom.,Airway Disease Infection Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Michael R Edwards
- Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom.,Airway Disease Infection Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Sebastian L Johnston
- Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom.,Airway Disease Infection Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Paul Lavender
- Peter Gorer Department of Immunobiology, King's College London, London, United Kingdom.,Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom
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30
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The Airway Epithelium-A Central Player in Asthma Pathogenesis. Int J Mol Sci 2020; 21:ijms21238907. [PMID: 33255348 PMCID: PMC7727704 DOI: 10.3390/ijms21238907] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/20/2020] [Accepted: 11/21/2020] [Indexed: 12/11/2022] Open
Abstract
Asthma is a chronic inflammatory airway disease characterized by variable airflow obstruction in response to a wide range of exogenous stimuli. The airway epithelium is the first line of defense and plays an important role in initiating host defense and controlling immune responses. Indeed, increasing evidence indicates a range of abnormalities in various aspects of epithelial barrier function in asthma. A central part of this impairment is a disruption of the airway epithelial layer, allowing inhaled substances to pass more easily into the submucosa where they may interact with immune cells. Furthermore, many of the identified susceptibility genes for asthma are expressed in the airway epithelium. This review focuses on the biology of the airway epithelium in health and its pathobiology in asthma. We will specifically discuss external triggers such as allergens, viruses and alarmins and the effect of type 2 inflammatory responses on airway epithelial function in asthma. We will also discuss epigenetic mechanisms responding to external stimuli on the level of transcriptional and posttranscriptional regulation of gene expression, as well the airway epithelium as a potential treatment target in asthma.
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31
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Heijink IH, Kuchibhotla VNS, Roffel MP, Maes T, Knight DA, Sayers I, Nawijn MC. Epithelial cell dysfunction, a major driver of asthma development. Allergy 2020; 75:1902-1917. [PMID: 32460363 PMCID: PMC7496351 DOI: 10.1111/all.14421] [Citation(s) in RCA: 135] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 05/04/2020] [Accepted: 05/12/2020] [Indexed: 12/13/2022]
Abstract
Airway epithelial barrier dysfunction is frequently observed in asthma and may have important implications. The physical barrier function of the airway epithelium is tightly interwoven with its immunomodulatory actions, while abnormal epithelial repair responses may contribute to remodelling of the airway wall. We propose that abnormalities in the airway epithelial barrier play a crucial role in the sensitization to allergens and pathogenesis of asthma. Many of the identified susceptibility genes for asthma are expressed in the airway epithelium, supporting the notion that events at the airway epithelial surface are critical for the development of the disease. However, the exact mechanisms by which the expression of epithelial susceptibility genes translates into a functionally altered response to environmental risk factors of asthma are still unknown. Interactions between genetic factors and epigenetic regulatory mechanisms may be crucial for asthma susceptibility. Understanding these mechanisms may lead to identification of novel targets for asthma intervention by targeting the airway epithelium. Moreover, exciting new insights have come from recent studies using single‐cell RNA sequencing (scRNA‐Seq) to study the airway epithelium in asthma. This review focuses on the role of airway epithelial barrier function in the susceptibility to develop asthma and novel insights in the modulation of epithelial cell dysfunction in asthma.
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Affiliation(s)
- Irene H. Heijink
- Department of Pathology & Medical Biology GRIAC Research Institute University Medical Center Groningen University of Groningen Groningen The Netherlands
- Department of Pulmonology University Medical Center Groningen University of Groningen Groningen The Netherlands
| | - Virinchi N. S. Kuchibhotla
- Department of Pathology & Medical Biology GRIAC Research Institute University Medical Center Groningen University of Groningen Groningen The Netherlands
- School of Biomedical Sciences and Pharmacy University of Newcastle Callaghan NSW Australia
| | - Mirjam P. Roffel
- Department of Pathology & Medical Biology GRIAC Research Institute University Medical Center Groningen University of Groningen Groningen The Netherlands
- Department of Respiratory Medicine Laboratory for Translational Research in Obstructive Pulmonary Diseases Ghent University Hospital Ghent University Ghent Belgium
| | - Tania Maes
- Department of Respiratory Medicine Laboratory for Translational Research in Obstructive Pulmonary Diseases Ghent University Hospital Ghent University Ghent Belgium
| | - Darryl A. Knight
- School of Biomedical Sciences and Pharmacy University of Newcastle Callaghan NSW Australia
- UBC Providence Health Care Research Institute Vancouver BC Canada
- Department of Anesthesiology, Pharmacology and Therapeutics University of British Columbia Vancouver BC Canada
| | - Ian Sayers
- Division of Respiratory Medicine National Institute for Health Research Nottingham Biomedical Research Centre University of Nottingham Biodiscovery Institute University of Nottingham Nottingham UK
| | - Martijn C. Nawijn
- Department of Pathology & Medical Biology GRIAC Research Institute University Medical Center Groningen University of Groningen Groningen The Netherlands
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32
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Nafea OE, El-Korashi LA, Gehad MH, Yousif YM, Zake LG. Association between blood aluminum and beta-2 receptor gene methylation with childhood asthma control. Hum Exp Toxicol 2020; 39:1301-1309. [PMID: 32351130 DOI: 10.1177/0960327120921436] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Previous studies have shown that environmental exposure to heavy metals has been related to epigenetic changes, such as DNA methylation in receptors involved in pathogenesis of asthma. One of these receptors is beta-2 adrenergic receptor (ADRB2). We conducted this study to examine the association between blood aluminum concentration, blood ADRB2 5' untranslated region (5'-UTR) methylation level, and childhood asthma control level. Our results showed a significant positive association between high blood aluminum concentration (odds ratio, 16, 95% confidence interval (CI) [3.57 to 71.76], p < 0.001) and high blood ADRB2 5'-UTR methylation level (odds ratio, 4.75, 95% CI [1.39 to 16.2], p = 0.013), and risk of uncontrolled asthma. Multivariable logistic regression revealed that higher blood aluminum concentration was independently associated with increased risk of uncontrolled bronchial asthma (odds ratio, 9.10, 95% CI [2.38 to 34.85], p = 0.0013], after controlling for age, sex, and blood ADRB2 5'-UTR methylation level. In addition, blood ADRB2 5'-UTR methylation level significantly correlated with whole blood aluminum concentration in asthmatic children (r = 0.480, p < 0.001). We concluded that increasing blood aluminum concentration is an important independent correlate of risk for uncontrolled bronchial asthma as well as increased blood aluminum concentration caused ADRB2 5'-UTR hyper-methylation with increasing risk of uncontrolled bronchial asthma.
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Affiliation(s)
- O E Nafea
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - L A El-Korashi
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - M H Gehad
- Department of Pediatrics, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Y M Yousif
- Department of Pediatrics, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - L G Zake
- Department of Pulmonology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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33
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Liu F, Shang YX. Sirtuin 6 attenuates epithelial-mesenchymal transition by suppressing the TGF-β1/Smad3 pathway and c-Jun in asthma models. Int Immunopharmacol 2020; 82:106333. [PMID: 32143002 DOI: 10.1016/j.intimp.2020.106333] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 02/17/2020] [Accepted: 02/17/2020] [Indexed: 12/12/2022]
Abstract
Allergic asthma is a chronic inflammatory airway disease involving airway remodeling. The histone deacetylase sirtuin6 (SIRT6) has protective effects in cardiac and liver fibrosis; however, its role in airway remodeling is unclear. In this study, we investigated the expression of SIRT6 in a rat model of airway remodeling and observed its effects on the epithelial-mesenchymal transition (EMT) in human bronchial epithelial 16HBE cells. Sprague-Dawley rats were sensitized and challenged with ovalbumin to induce airway remodeling or with phosphate-buffered saline as a control for different periods. Morphological changes, cell counts in the bronchoalveolar lavage fluid, and SIRT6 expression were assessed. 16HBE cells were transfected with plasmids to silence or overexpress SIRT6. Western blotting, quantitative polymerase chain reaction, Transwell assays, and cell proliferation assays were performed to examine the transforming growth factor (TGF)-β1-induced changes in EMT indicators and EMT-related cell behaviors. SIRT6 expression was upregulated in bronchial epithelial cells from rats with airway remodeling and in TGF-β1-treated 16HBE cells. SIRT6 overexpression affected TGF-β1-induced changes in EMT markers and EMT-like cell behaviors. In particular, SIRT6 overexpression alleviated the reduction in E-cadherin and the increases in N-cadherin, vimentin, alpha-smooth muscle actin, and metalloproteinase-9 levels in TGF-β1-treated 16HBE cells. Forced expression of SIRT6 also decreased the rates of cell migration and proliferation, reduced activation of phosphorylated Smad3 induced by TGF-β1 treatment, suppressed the acetylation level at histone H3K9, and inhibited the transcriptional activity of the c-Jun promotor. These results suggested that SIRT6 expression is upregulated during airway remodeling and modulates EMT in bronchial epithelial cells targeting Smad3 and c-Jun, highlighting a new therapeutic candidate for improving airway remodeling in asthma.
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Affiliation(s)
- Fen Liu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yun-Xiao Shang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China.
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34
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Tang HHF, Sly PD, Holt PG, Holt KE, Inouye M. Systems biology and big data in asthma and allergy: recent discoveries and emerging challenges. Eur Respir J 2020; 55:13993003.00844-2019. [PMID: 31619470 DOI: 10.1183/13993003.00844-2019] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 09/12/2019] [Indexed: 12/15/2022]
Abstract
Asthma is a common condition caused by immune and respiratory dysfunction, and it is often linked to allergy. A systems perspective may prove helpful in unravelling the complexity of asthma and allergy. Our aim is to give an overview of systems biology approaches used in allergy and asthma research. Specifically, we describe recent "omic"-level findings, and examine how these findings have been systematically integrated to generate further insight.Current research suggests that allergy is driven by genetic and epigenetic factors, in concert with environmental factors such as microbiome and diet, leading to early-life disturbance in immunological development and disruption of balance within key immuno-inflammatory pathways. Variation in inherited susceptibility and exposures causes heterogeneity in manifestations of asthma and other allergic diseases. Machine learning approaches are being used to explore this heterogeneity, and to probe the pathophysiological patterns or "endotypes" that correlate with subphenotypes of asthma and allergy. Mathematical models are being built based on genomic, transcriptomic and proteomic data to predict or discriminate disease phenotypes, and to describe the biomolecular networks behind asthma.The use of systems biology in allergy and asthma research is rapidly growing, and has so far yielded fruitful results. However, the scale and multidisciplinary nature of this research means that it is accompanied by new challenges. Ultimately, it is hoped that systems medicine, with its integration of omics data into clinical practice, can pave the way to more precise, personalised and effective management of asthma.
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Affiliation(s)
- Howard H F Tang
- Cambridge Baker Systems Genomics Initiative, Baker Heart and Diabetes Institute, Melbourne, Australia .,Cambridge Baker Systems Genomics Initiative, Dept of Public Health and Primary Care, University of Cambridge, Cambridge, UK.,School of BioSciences, The University of Melbourne, Parkville, Australia
| | - Peter D Sly
- Queensland Children's Medical Research Institute, The University of Queensland, Brisbane, Australia.,Telethon Kids Institute, University of Western Australia, Perth, Australia
| | - Patrick G Holt
- Queensland Children's Medical Research Institute, The University of Queensland, Brisbane, Australia.,Telethon Kids Institute, University of Western Australia, Perth, Australia
| | - Kathryn E Holt
- Dept of Infectious Diseases, Central Clinical School, Monash University, Melbourne, Australia.,London School of Hygiene and Tropical Medicine, London, UK
| | - Michael Inouye
- Cambridge Baker Systems Genomics Initiative, Baker Heart and Diabetes Institute, Melbourne, Australia.,Cambridge Baker Systems Genomics Initiative, Dept of Public Health and Primary Care, University of Cambridge, Cambridge, UK.,School of BioSciences, The University of Melbourne, Parkville, Australia.,The Alan Turing Institute, London, UK
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35
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Kan S, Hariyadi DM, Grainge C, Knight DA, Bartlett NW, Liang M. Airway epithelial-targeted nanoparticles for asthma therapy. Am J Physiol Lung Cell Mol Physiol 2020; 318:L500-L509. [PMID: 31913649 DOI: 10.1152/ajplung.00237.2019] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Asthma is a common chronic inflammatory disease associated with intermittent airflow obstruction caused by airway inflammation, mucus overproduction, and bronchial hyperresponsiveness. Despite current treatment and management options, a large number of patients with asthma still have poorly controlled disease and are susceptible to acute exacerbations, usually caused by a respiratory virus infection. As a result, there remains a need for novel therapies to achieve better control and prevent/treat exacerbations. Nanoparticles (NPs), including extracellular vesicles (EV) and their synthetic counterparts, have been developed for drug delivery in respiratory diseases. In the case of asthma, where airway epithelium dysfunction, including dysregulated differentiation of epithelial cells, impaired barrier, and immune response, is a driver of disease, targeting airway epithelial cells with NPs may offer opportunities to repair or reverse these dysfunctions with therapeutic interventions. EVs possess multiple advantages for airway epithelial targeting, such as their natural intrinsic cell-targeting properties and low immunogenicity. Synthetic NPs can be coated with muco-inert polymers to overcome biological barriers such as mucus and the phagocytic response of immune cells. Targeting ligands could be also added to enhance targeting specificity to epithelial cells. The review presents current understanding and advances in NP-mediated drug delivery to airway epithelium for asthma therapy. Future perspectives in this therapeutic strategy will also be discussed, including the development of novel formulations and physiologically relevant preclinical models.
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Affiliation(s)
- Stanislav Kan
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, New South Wales, Australia.,Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, The University of Newcastle, New South Wales, Australia
| | | | - Christopher Grainge
- School of Medicine and Public Health, The University of Newcastle, Callaghan, New South Wales, Australia.,Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, The University of Newcastle, New South Wales, Australia
| | - Darryl A Knight
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, New South Wales, Australia.,Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, The University of Newcastle, New South Wales, Australia
| | - Nathan W Bartlett
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, New South Wales, Australia.,Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, The University of Newcastle, New South Wales, Australia
| | - Mingtao Liang
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, New South Wales, Australia.,Faculty of Pharmacy, Universitas Airlangga, Surabaya, Indonesia
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36
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Potaczek DP, Miethe S, Schindler V, Alhamdan F, Garn H. Role of airway epithelial cells in the development of different asthma phenotypes. Cell Signal 2020; 69:109523. [PMID: 31904412 DOI: 10.1016/j.cellsig.2019.109523] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 12/30/2019] [Accepted: 12/31/2019] [Indexed: 01/06/2023]
Abstract
The term (bronchial) asthma describes a disorder syndrome that comprises several disease phenotypes, all characterized by chronic inflammation in the bronchial epithelium, with a variety of subsequent functional consequences. Thus, the epithelium in the conducting airways is the main localization of the complex pathological changes in the disease. In this regard, bronchial epithelial cells are not passively affected by inflammatory mechanisms induced by immunological processes but rather actively involved in all steps of disease development from initiation and perpetuation to chronification. In recent years it turned out that bronchial epithelial cells show a high level of structural and functional diversity and plasticity with epigenetic mechanisms playing a crucial role in the regulation of these processes. Thus, it is quite reasonable that differential functional activities of the bronchial epithelium are involved in the development of different asthma phenotypes and/or stages of disease. The current knowledge on this topic will be discussed in this review article.
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Affiliation(s)
- Daniel P Potaczek
- Institute of Laboratory Medicine and Pathobiochemistry - Molecular Diagnostics, Philipps University of Marburg - Medical Faculty, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Marburg, Germany; John Paul II Hospital, Krakow, Poland
| | - Sarah Miethe
- Institute of Laboratory Medicine and Pathobiochemistry - Molecular Diagnostics, Philipps University of Marburg - Medical Faculty, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Marburg, Germany
| | - Viktoria Schindler
- Institute of Laboratory Medicine and Pathobiochemistry - Molecular Diagnostics, Philipps University of Marburg - Medical Faculty, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Marburg, Germany
| | - Fahd Alhamdan
- Institute of Laboratory Medicine and Pathobiochemistry - Molecular Diagnostics, Philipps University of Marburg - Medical Faculty, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Marburg, Germany
| | - Holger Garn
- Institute of Laboratory Medicine and Pathobiochemistry - Molecular Diagnostics, Philipps University of Marburg - Medical Faculty, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Marburg, Germany.
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37
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Tetrandrine Ameliorates Airway Remodeling of Chronic Asthma by Interfering TGF- β1/Nrf-2/HO-1 Signaling Pathway-Mediated Oxidative Stress. Can Respir J 2019; 2019:7930396. [PMID: 31781316 PMCID: PMC6875008 DOI: 10.1155/2019/7930396] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 08/24/2019] [Accepted: 09/11/2019] [Indexed: 01/10/2023] Open
Abstract
Background Imbalanced oxidative stress and antioxidant defense are involved in airway remodeling in asthma. It has been demonstrated that Tetrandrine has a potent role in antioxidant defense in rheumatoid arthritis and hypertension. However, the correlation between Tetrandrine and oxidative stress in asthma is utterly blurry. This study aimed to investigate the role of Tetrandrine on oxidative stress-mediated airway remolding. Materials and Methods Chronic asthma was established by ovalbumin (OVA) administration in male Wistar rats. Histopathology was determined by HE staining. Immunofluorescence was employed to detect the expression of α-SMA and Nrf-2. Level of oxidative stress and matrix metalloproteinases were examined by ELISA kits. Cell viability and cell cycle of primary airway smooth muscle cells (ASMCs) were evaluated by CCK8 and flow cytometry, respectively. Signal molecules were detected using western blot. Results Tetrandrine effectively impairs OVA-induced airway inflammatory and airway remodeling by inhibiting the expression of CysLT1 and CysLTR1. The increase of oxidative stress and subsequent enhancement of MMP9 and TGF-β1 expression were rescued by the administration of Tetrandrine in the rat model of asthma. In in vitro experiments, Tetrandrine markedly suppressed TGF-β1-evoked cell viability and cell cycle promotion of ASMCs in a dose-dependent manner. Furthermore, Tetrandrine promoted Nrf-2 nuclear transcription and activated its downstream HO-1 in vivo and in vitro. Conclusion Tetrandrine attenuates airway inflammatory and airway remodeling in rat model of asthma and TGF-β1-induced cell proliferation of ASMCs by regulating oxidative stress in primary ASMCs, suggesting that Tetrandrine possibly is an effective candidate therapy for asthma.
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38
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Wadhwa R, Dua K, Adcock IM, Horvat JC, Kim RY, Hansbro PM. Cellular mechanisms underlying steroid-resistant asthma. Eur Respir Rev 2019; 28:28/153/190096. [PMID: 31636089 DOI: 10.1183/16000617.0096-2019] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 09/19/2019] [Indexed: 01/04/2023] Open
Abstract
Severe steroid-resistant asthma is clinically important, as patients with this form of the disease do not respond to mainstay corticosteroid therapies. The heterogeneity of this form of asthma and poor understanding of the pathological mechanisms involved hinder the identification of therapeutic targets and the development of more effective therapies. A major limiting factor in the understanding of severe steroid-resistant asthma is the existence of multiple endotypes represented by different immunological and inflammatory phenotypes, particularly in adults. Several clinical and experimental studies have revealed associations between specific respiratory infections and steroid-resistant asthma in adults. Here, we discuss recent findings from other authors as well as our own studies that have developed novel experimental models for interrogating the association between respiratory infections and severe steroid-resistant asthma. These models have enabled the identification of new therapies using macrolides, as well as several novel disease mechanisms, including the microRNA-21/phosphoinositide 3-kinase/histone deacetylase 2 axis and NLRP3 inflammasomes, and highlight the potential of these mechanisms as therapeutic targets.
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Affiliation(s)
- Ridhima Wadhwa
- Centre for Inflammation, Centenary Institute, Sydney, Australia.,Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney, Australia.,Both authors contributed equally
| | - Kamal Dua
- Centre for Inflammation, Centenary Institute, Sydney, Australia.,Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney, Australia.,Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Newcastle, Australia.,Both authors contributed equally
| | - Ian M Adcock
- The Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, UK
| | - Jay C Horvat
- Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Newcastle, Australia
| | - Richard Y Kim
- Centre for Inflammation, Centenary Institute, Sydney, Australia.,Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Newcastle, Australia.,Faculty of Science, University of Technology Sydney, Sydney, Australia
| | - Philip M Hansbro
- Centre for Inflammation, Centenary Institute, Sydney, Australia.,Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Newcastle, Australia.,Faculty of Science, University of Technology Sydney, Sydney, Australia
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39
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Clifford RL, Patel J, MacIsaac JL, McEwen LM, Johnson SR, Shaw D, Knox AJ, Hackett TL, Kobor MS. Airway epithelial cell isolation techniques affect DNA methylation profiles with consequences for analysis of asthma related perturbations to DNA methylation. Sci Rep 2019; 9:14409. [PMID: 31595000 PMCID: PMC6783553 DOI: 10.1038/s41598-019-50873-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 09/15/2019] [Indexed: 12/14/2022] Open
Abstract
The airway epithelium forms the interface between the inhaled environment and the lung. The airway epithelium is dysfunctional in asthma and epigenetic mechanisms are considered a contributory factor. We hypothesised that the DNA methylation profiles of cultured primary airway epithelial cells (AECs) would differ between cells isolated from individuals with asthma (n = 17) versus those without asthma (n = 16). AECs were isolated from patients by two different isolation techniques; pronase digestion (9 non-asthmatic, 8 asthmatic) and bronchial brushings (7 non-asthmatic and 9 asthmatic). DNA methylation was assessed using an Illumina Infinium HumanMethylation450 BeadChip array. DNA methylation of AECs clustered by isolation technique and linear regression identified 111 CpG sites differentially methylated between isolation techniques in healthy individuals. As a consequence, the effect of asthmatic status on DNA methylation was assessed within AEC samples isolated using the same technique. In pronase isolated AECs, 15 DNA regions were differentially methylated between asthmatics and non-asthmatics. In bronchial brush isolated AECs, 849 differentially methylated DNA regions were identified with no overlap to pronase regions. In conclusion, regardless of cell isolation technique, differential DNA methylation was associated with asthmatic status in AECs, providing further evidence for aberrant DNA methylation as a signature of epithelial dysfunction in asthma.
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Affiliation(s)
- Rachel L Clifford
- Nottingham NIHR Biomedical Research Centre, Nottingham MRC Molecular Pathology Node, Division of Respiratory Medicine, University of Nottingham, Nottingham University Hospitals NHS Trust, Nottingham, UK. .,Centre for Molecular Medicine and Therapeutics, BC Children's Hospital Research Institute, Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada.
| | - Jamie Patel
- Nottingham NIHR Biomedical Research Centre, Nottingham MRC Molecular Pathology Node, Division of Respiratory Medicine, University of Nottingham, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Julia L MacIsaac
- Centre for Molecular Medicine and Therapeutics, BC Children's Hospital Research Institute, Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Lisa M McEwen
- Centre for Molecular Medicine and Therapeutics, BC Children's Hospital Research Institute, Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Simon R Johnson
- Nottingham NIHR Biomedical Research Centre, Nottingham MRC Molecular Pathology Node, Division of Respiratory Medicine, University of Nottingham, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Dominick Shaw
- Nottingham NIHR Biomedical Research Centre, Nottingham MRC Molecular Pathology Node, Division of Respiratory Medicine, University of Nottingham, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Alan J Knox
- Nottingham NIHR Biomedical Research Centre, Nottingham MRC Molecular Pathology Node, Division of Respiratory Medicine, University of Nottingham, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Tillie-Louise Hackett
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, Canada.,Department of Anaesthesiology, Pharmacology & Therapeutics, University of British Columbia, Vancouver, Canada
| | - Michael S Kobor
- Centre for Molecular Medicine and Therapeutics, BC Children's Hospital Research Institute, Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
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40
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Cheng Q, Shang Y, Huang W, Zhang Q, Li X, Zhou Q. p300 mediates the histone acetylation of ORMDL3 to affect airway inflammation and remodeling in asthma. Int Immunopharmacol 2019; 76:105885. [PMID: 31536903 DOI: 10.1016/j.intimp.2019.105885] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 08/20/2019] [Accepted: 09/05/2019] [Indexed: 12/25/2022]
Abstract
BACKGROUND Bronchial asthma is affected by both environmental and genetic factors. The orosomucoid 1-like protein 3 (ORMDL3) gene is related to childhood asthma and is involved in airway inflammation and airway remodeling. The ORMDL3 promoter contains binding sites for the histone acetylase p300. Gene expression can be affected by epigenetic modifications. This study aimed to investigate whether the p300-mediated histone acetylation (HAT) of ORMDL3 gene affects airway inflammation and remodeling in asthma. METHODS 16HBE14o- cells were transfected with various concentrations of a wild-type p300 plasmid or p300HAT-deletion plasmids. A dual luciferase reporter assay was used to examine the effect of p300-mediated HAT on the ORMDL3 promoter. Thirty BALB/c mice were randomly divided into a control group, an ovalbumin (OVA)-induced asthma group and an asthma + C646 (a selective inhibitor of p300) group. Noninvasive lung function tests were conducted to examine airway hyperreactivity (AHR) in the different groups. HE and Masson's trichrome staining was performed to examine airway remodeling and inflammation. Immunohistochemistry, western blotting and real-time PCR were used to analyze ORMDL3 expression in lung tissues. ELISA and western blotting were used to evaluate the HAT status in lung tissue. The ChIP assay was used to determine the relationship of the ORMDL3 promoter to p300 or acetylated histone H3 (aceH3). RESULTS p300 activated transcription from the ORMDL3 promoter, resulting in an increase in endogenous ORMDL3 mRNA levels. ORMDL3 promoter activity was reduced when the HAT activity of p300 was lost. ORMDL3 expression was elevated, and HAT activity was high in the lung tissues of asthmatic mice. p300 and aceH3 bound to the promoter region of ORMDL3. In the asthma group, the amounts of p300 and aceH3 recruited to the ORMDL3 promoter were increased. C646 inhibited p300 expression and reduced HAT activity and aceH3 levels in asthmatic mice, thereby reducing ORMDL3 expression and relieving AHR and airway remodeling. CONCLUSION p300-mediated HAT modulates the expression of the asthma susceptibility gene ORMDL3, thereby improving the process of airway inflammation and remodeling in asthma.
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Affiliation(s)
- Qi Cheng
- Pediatric Pulmonology Department, Shengjing Hospital of China Medical University, 36th Sanhao Street, Heping District, Shenyang 110004, PR China.
| | - Yunxiao Shang
- Pediatric Pulmonology Department, Shengjing Hospital of China Medical University, 36th Sanhao Street, Heping District, Shenyang 110004, PR China.
| | - Wanjie Huang
- Pediatric Pulmonology Department, Shengjing Hospital of China Medical University, 36th Sanhao Street, Heping District, Shenyang 110004, PR China
| | - Qinzhen Zhang
- Pediatric Pulmonology Department, Shengjing Hospital of China Medical University, 36th Sanhao Street, Heping District, Shenyang 110004, PR China
| | - Xiang Li
- Pediatric Pulmonology Department, Shengjing Hospital of China Medical University, 36th Sanhao Street, Heping District, Shenyang 110004, PR China
| | - Qianlan Zhou
- Pediatric Pulmonology Department, Shengjing Hospital of China Medical University, 36th Sanhao Street, Heping District, Shenyang 110004, PR China
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41
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Dua K, Wadhwa R, Singhvi G, Rapalli V, Shukla SD, Shastri MD, Gupta G, Satija S, Mehta M, Khurana N, Awasthi R, Maurya PK, Thangavelu L, S R, Tambuwala MM, Collet T, Hansbro PM, Chellappan DK. The potential of siRNA based drug delivery in respiratory disorders: Recent advances and progress. Drug Dev Res 2019; 80:714-730. [DOI: 10.1002/ddr.21571] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/11/2019] [Accepted: 05/21/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Kamal Dua
- Discipline of Pharmacy, Graduate School of HealthUniversity of Technology Sydney Ultimo New South Wales Australia
- Centenary InstituteRoyal Prince Alfred Hospital Camperdown New South Wales Australia
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute (HMRI) and School of Biomedical Sciences and PharmacyUniversity of Newcastle Callaghan New South Wales Australia
| | - Ridhima Wadhwa
- Faculty of Life Sciences and BiotechnologySouth Asian University New Delhi India
| | - Gautam Singhvi
- Department of PharmacyBirla Institute of Technology and Science (BITS) Pilani India
| | | | - Shakti Dhar Shukla
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute (HMRI) and School of Biomedical Sciences and PharmacyUniversity of Newcastle Callaghan New South Wales Australia
| | - Madhur D. Shastri
- School of Health Sciences, College of Health and MedicineUniversity of Tasmania Launceston Australia
| | - Gaurav Gupta
- School of PharmacySuresh Gyan Vihar University Jaipur India
| | - Saurabh Satija
- School of Pharmaceutical SciencesLovely Professional University Phagwara Punjab India
| | - Meenu Mehta
- School of Pharmaceutical SciencesLovely Professional University Phagwara Punjab India
| | - Navneet Khurana
- School of Pharmaceutical SciencesLovely Professional University Phagwara Punjab India
| | - Rajendra Awasthi
- Amity Institute of PharmacyAmity University Noida Uttar Pradesh India
| | - Pawan Kumar Maurya
- Department of BiochemistryCentral University of Haryana Mahendergarh Haryana India
| | - Lakshmi Thangavelu
- Nanobiomedicine Lab, Department of Pharmacology, Saveetha Dental CollegeSaveetha Institute of Medical and Technical Sciences Chennai Tamil Nadu India
| | - Rajeshkumar S
- Nanobiomedicine Lab, Department of Pharmacology, Saveetha Dental CollegeSaveetha Institute of Medical and Technical Sciences Chennai Tamil Nadu India
| | - Murtaza M. Tambuwala
- School of Pharmacy and Pharmaceutical SciencesUlster University, Coleraine London United Kingdom of Great Britain and Northern Ireland
| | - Trudi Collet
- Inovative Medicines Group, Institute of Health and Biomedical InnovationQueensland University of Technology Brisbane Queensland Australia
| | - Philip M. Hansbro
- Centenary InstituteRoyal Prince Alfred Hospital Camperdown New South Wales Australia
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute (HMRI) and School of Biomedical Sciences and PharmacyUniversity of Newcastle Callaghan New South Wales Australia
- School of Life SciencesUniversity of Technology Sydney Sydney New South Wales Australia
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of PharmacyInternational Medical University Kuala Lumpur Malaysia
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42
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Association Study of Myosin Heavy Chain 15 Polymorphisms with Asthma Susceptibility in Chinese Han. BIOMED RESEARCH INTERNATIONAL 2019; 2019:3805405. [PMID: 30906771 PMCID: PMC6398074 DOI: 10.1155/2019/3805405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 01/23/2019] [Accepted: 02/05/2019] [Indexed: 02/05/2023]
Abstract
Background The Myosin Heavy Chain 15 gene (MYH15) is expressed in the airway epithelium and variants in the gene have been associated with airway responsiveness. The aim of this study was to perform the first investigation of MYH15 polymorphisms in relation to asthma susceptibility. Methods A total of 410 asthma patients and 418 controls from the Chinese Han population were enrolled in the study. Tag-single nucleotide polymorphisms were genotyped and associations between the polymorphisms and asthma risk were analyzed by logistic regression analysis adjusting for confounding factors. Dual-luciferase reporter gene analysis was performed to detect allele-dependent promoter activity of MYH15 variants in HEK293 cells. Results The A allele of rs9288876 decreased risk of asthma (allelic model: OR=0.808, 95% CI: 0.658-0.993, additive model: OR=0.747, 95% CI: 0.588-0.947, dominant model: OR=0.693, 95% CI: 0.502-0.955). The G alleles of both rs7635009 and rs1454197 were associated with decreased risk of asthma under the additive model (OR=0.779, 95% CI: 0.618-0.981 and OR=0.756, 95% CI: 0.600-0.953, respectively). rs9288876 allele A was associated with higher luciferase activity than allele T (P<0.001). The luciferase activity of rs7635009 allele A was lower than allele G (P=0.001), while rs1454197 allele T had lower luciferase activity than allele G (P<0.001). Conclusion This is the first study to report the association of MYH15 gene polymorphisms with asthma. Polymorphisms of rs9288876, rs7635009, and rs1454197 altered transcriptional regulation of MYH15 and may be functional variants conferring susceptibility to asthma. Further study with larger sample size in different ethnic populations is needed.
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Pezzulo AA, Tudas RA, Stewart CG, Buonfiglio LGV, Lindsay BD, Taft PJ, Gansemer ND, Zabner J. HSP90 inhibitor geldanamycin reverts IL-13- and IL-17-induced airway goblet cell metaplasia. J Clin Invest 2019; 129:744-758. [PMID: 30640172 PMCID: PMC6355221 DOI: 10.1172/jci123524] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 11/20/2018] [Indexed: 12/29/2022] Open
Abstract
Goblet cell metaplasia, a disabling hallmark of chronic lung disease, lacks curative treatments at present. To identify novel therapeutic targets for goblet cell metaplasia, we studied the transcriptional response profile of IL-13-exposed primary human airway epithelia in vitro and asthmatic airway epithelia in vivo. A perturbation-response profile connectivity approach identified geldanamycin, an inhibitor of heat shock protein 90 (HSP90) as a candidate therapeutic target. Our experiments confirmed that geldanamycin and other HSP90 inhibitors prevented IL-13-induced goblet cell metaplasia in vitro and in vivo. Geldanamycin also reverted established goblet cell metaplasia. Geldanamycin did not induce goblet cell death, nor did it solely block mucin synthesis or IL-13 receptor-proximal signaling. Geldanamycin affected the transcriptome of airway cells when exposed to IL-13, but not when exposed to vehicle. We hypothesized that the mechanism of action probably involves TGF-β, ERBB, or EHF, which would predict that geldanamycin would also revert IL-17-induced goblet cell metaplasia, a prediction confirmed by our experiments. Our findings suggest that persistent airway goblet cell metaplasia requires HSP90 activity and that HSP90 inhibitors will revert goblet cell metaplasia, despite active upstream inflammatory signaling. Moreover, HSP90 inhibitors may be a therapeutic option for airway diseases with goblet cell metaplasia of unknown mechanism.
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Affiliation(s)
- Alejandro A. Pezzulo
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, Iowa, USA
| | - Rosarie A. Tudas
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, Iowa, USA
| | - Carley G. Stewart
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, Iowa, USA
| | | | - Brian D. Lindsay
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
| | - Peter J. Taft
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, Iowa, USA
| | - Nicholas D. Gansemer
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, Iowa, USA
| | - Joseph Zabner
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, and
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, Iowa, USA
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Hernandez-Pacheco N, Pino-Yanes M, Flores C. Genomic Predictors of Asthma Phenotypes and Treatment Response. Front Pediatr 2019; 7:6. [PMID: 30805318 PMCID: PMC6370703 DOI: 10.3389/fped.2019.00006] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 01/10/2019] [Indexed: 12/11/2022] Open
Abstract
Asthma is a complex respiratory disease considered as the most common chronic condition in children. A large genetic contribution to asthma susceptibility is predicted by the clustering of asthma and allergy symptoms among relatives and the large disease heritability estimated from twin studies, ranging from 55 to 90%. Genetic basis of asthma has been extensively investigated in the past 40 years using linkage analysis and candidate-gene association studies. However, the development of dense arrays for polymorphism genotyping has enabled the transition toward genome-wide association studies (GWAS), which have led the discovery of several unanticipated asthma genes in the last 11 years. Despite this, currently known risk variants identified using many thousand samples from distinct ethnicities only explain a small proportion of asthma heritability. This review examines the main findings of the last 2 years in genomic studies of asthma using GWAS and admixture mapping studies, as well as the direction of studies fostering integrative perspectives involving omics data. Additionally, we discuss the need for assessing the whole spectrum of genetic variation in association studies of asthma susceptibility, severity, and treatment response in order to further improve our knowledge of asthma genes and predictive biomarkers. Leveraging the individual's genetic information will allow a better understanding of asthma pathogenesis and will facilitate the transition toward a more precise diagnosis and treatment.
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Affiliation(s)
- Natalia Hernandez-Pacheco
- Research Unit, Hospital Universitario N.S. de Candelaria, Universidad de La Laguna, Santa Cruz de Tenerife, Spain.,Genomics and Health Group, Department of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna, Santa Cruz de Tenerife, Spain
| | - Maria Pino-Yanes
- Research Unit, Hospital Universitario N.S. de Candelaria, Universidad de La Laguna, Santa Cruz de Tenerife, Spain.,Genomics and Health Group, Department of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna, Santa Cruz de Tenerife, Spain.,CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Carlos Flores
- Research Unit, Hospital Universitario N.S. de Candelaria, Universidad de La Laguna, Santa Cruz de Tenerife, Spain.,CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Genomics Division, Instituto Tecnológico y de Energías Renovables, Santa Cruz de Tenerife, Spain
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Lan B, Mitchel JA, O’Sullivan MJ, Park CY, Kim JH, Cole WC, Butler JP, Park JA. Airway epithelial compression promotes airway smooth muscle proliferation and contraction. Am J Physiol Lung Cell Mol Physiol 2018; 315:L645-L652. [PMID: 30070589 PMCID: PMC6295502 DOI: 10.1152/ajplung.00261.2018] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
During acute bronchoconstriction, the airway epithelium becomes mechanically compressed, as airway smooth muscle contracts and the airway narrows. This mechanical compression activates airway epithelium to promote asthmatic airway remodeling. However, whether compressed airway epithelium can feed back on the cause of bronchoconstriction has remained an open question. Here we examine the potential for epithelial compression to augment proliferation and contraction of airway smooth muscle, and thus potentiate further bronchoconstriction and epithelial compression. Well-differentiated primary human bronchial epithelial (HBE) cells maintained in air-liquid interface culture were mechanically compressed to mimic the effect of bronchoconstriction. Primary human airway smooth muscle (HASM) cells were incubated with conditioned media collected from mechanically compressed HBE cells to examine the effect of epithelial-derived mediators on HASM cell proliferation using an EdU assay and HASM cell contraction using traction microscopy. An endothelin receptor antagonist, PD-145065, was employed to probe the role of HBE cell-derived endothelin-1 on the proliferation and contraction of HASM cells. Conditioned media from compressed HBE cells increased HASM cell proliferation, independent of the endothelin-1 signaling pathway. However, conditioned media from compressed HBE cells significantly increased HASM cell basal contraction and histamine-induced contraction, both of which depended on the endothelin-1 signaling pathway. Our data demonstrate that mechanical compression of bronchial epithelial cells contributes to proliferation and basal contraction of airway smooth muscle cells and that augmented contraction depends on epithelial cell-derived endothelin-1. By means of both airway smooth muscle remodeling and contractility, our findings suggest a causal role of epithelial compression on asthma pathogenesis.
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Affiliation(s)
- Bo Lan
- 1Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts,2Smooth Muscle Research Group and Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Alberta, Canada
| | - Jennifer A. Mitchel
- 1Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - Michael J. O’Sullivan
- 1Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - Chan Young Park
- 1Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - Jae Hun Kim
- 1Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - William C. Cole
- 2Smooth Muscle Research Group and Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Alberta, Canada
| | - James P. Butler
- 1Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts,3Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Jin-Ah Park
- 1Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
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Dizier MH, Margaritte-Jeannin P, Pain L, Sarnowski C, Brossard M, Mohamdi H, Lavielle N, Babron MCC, Just J, Lathrop M, Laprise C, Bouzigon E, Demenais F, Nadif R. Interactive effect between ATPase-related genes and early-life tobacco smoke exposure on bronchial hyper-responsiveness detected in asthma-ascertained families. Thorax 2018; 74:254-260. [PMID: 30282721 DOI: 10.1136/thoraxjnl-2018-211797] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 06/21/2018] [Accepted: 08/20/2018] [Indexed: 01/29/2023]
Abstract
BACKGROUND A positional cloning study of bronchial hyper-responsiveness (BHR) at the 17p11 locus in the French Epidemiological study on the Genetics and Environment of Asthma (EGEA) families showed significant interaction between early-life environmental tobacco smoke (ETS) exposure and genetic variants located in DNAH9. This gene encodes the heavy chain subunit of axonemal dynein, which is involved with ATP in the motile cilia function.Our goal was to identify genetic variants at other genes interacting with ETS in BHR by investigating all genes belonging to the 'ATP-binding' and 'ATPase activity' pathways which include DNAH9, are targets of cigarette smoke and play a crucial role in the airway inflammation. METHODS Family-based interaction tests between ETS-exposed and unexposed BHR siblings were conducted in 388 EGEA families. Twenty single-nucleotide polymorphisms (SNP) showing interaction signals (p≤5.10-3) were tested in the 253 Saguenay-Lac-Saint-Jean (SLSJ) families. RESULTS One of these SNPs was significantly replicated for interaction with ETS in SLSJ families (p=0.003). Another SNP reached the significance threshold after correction for multiple testing in the combined analysis of the two samples (p=10-5). Results were confirmed using both a robust log-linear test and a gene-based interaction test. CONCLUSION The SNPs showing interaction with ETS belong to the ATP8A1 and ABCA1 genes, which play a role in the maintenance of asymmetry and homeostasis of lung membrane lipids.
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Affiliation(s)
- Marie-Hélène Dizier
- INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Patricia Margaritte-Jeannin
- INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Lucile Pain
- Département des Sciences Fondamentales, Université du Québec, Chicoutimi, Quebec, Canada
| | - Chloé Sarnowski
- INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Myriam Brossard
- INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Hamida Mohamdi
- INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Nolwenn Lavielle
- INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Marie-Claude C Babron
- INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Jocelyne Just
- Service d'Allergologie Pédiatrique, Centre de l'Asthme et des Allergies, Hôpital d'Enfants Armand-Trousseau (APHP), UPMC Paris 06, Paris, France
| | - Mark Lathrop
- Department of Human Genetics, McGill University and Genome Quebec's Innovation Centre, Montréal, Québec, Canada
| | - Catherine Laprise
- Département des Sciences Fondamentales, Université du Québec, Chicoutimi, Quebec, Canada
| | - Emmanuelle Bouzigon
- INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Florence Demenais
- INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
| | - Rachel Nadif
- Aging and Chronic Diseases-Epidemiological and Public Health Approaches (VIMA), Inserm, U1168, Villejuif, France.,UMR-S 1168, Université de Versailles Saint-Quentin-en-Yvelines, Paris, France
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Biswas S. Role of PCDH 1 Gene in the Development of Childhood Asthma and Other Related Phenotypes: A Literature Review. Cureus 2018; 10:e3360. [PMID: 30510870 PMCID: PMC6257625 DOI: 10.7759/cureus.3360] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The asthma gene PCDH 1, encoding protocadherin-1, is a cellular adhesion molecule which plays an important role in epithelial barrier formation and repair. PCDH 1 is a novel susceptible gene not only in childhood asthma but also in eczema and other atopic phenotypes. In this article, we reviewed relevant articles from PubMed, Google Scholar, Science Direct and included all available significant pieces of information about the PCDH 1 association with asthma and other atopic or non-atopic phenotypes. It is very interesting that cigarette smoking can induce changes in PCDH 1 expression but how the changes in PCDH 1 induce asthma is still not clear. PCDH 1 gene polymorphism also sometimes plays role in asthma and bronchial hyperresponsiveness (BHR) pathogenesis as well as in allergic dermatitis.
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Affiliation(s)
- Sharmi Biswas
- Pediatrics, California Institute of Behavioral Neurosciences & Psychology, Fairfield, USA
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Wu XL, Li R, Zhang HW, Jin R, Wang JY, Juan CX, Lu K, Shu J, Wang LL, Wang Y, Zhuang LL, Zhou GP. Methylation status of ORMDL3 regulates cytokine production and p-ERK/MMP9 pathway expression. Exp Cell Res 2018; 372:43-51. [PMID: 30217493 DOI: 10.1016/j.yexcr.2018.09.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/06/2018] [Accepted: 09/10/2018] [Indexed: 01/11/2023]
Abstract
Orosomucoid like-3 (ORMDL3) has been identified to be associated with the development of asthma according to previous studies. However, the definite role of ORMDL3 in the pathogenesis of asthma remains unclear. In this study, we found ORMDL3 was highly expressed in PBMC specimens from childhood asthma patients. Cytokines production and p-ERK/MMP-9 pathway expression was also increased in childhood asthma patients compared with controls. In addition, ORMDL3 overexpression induced IL-6 and IL-8 release and activated p-ERK/MMP-9 pathway in vitro. Increased ORMDL3 expression was observed after treated with 5-Aza-CdR. 5-Aza-CdR decreased the percentage of the CpG island in the ORMDL3 promoter region and increased its promoter activity. In addition, 5-Aza-CdR significantly increased IL-6 and IL-8 levels in NHBE cells while there was no obvious alteration after knocking down ORMDL3. Knockdown of ORMDL3 also significantly decreased the expression of p-ERK/MMP-9 pathway in the presence or absence of 5-Aza-CdR. In conclusion, our study provided novel evidence for the association between ORMDL3 and asthma-associated cytokines. Moreover, DNA methylation plays an important role in ORMDL3-mediated increased IL-6 and IL-8 levels and p-ERK/MMP-9 pathway expression.
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Affiliation(s)
- Xiao-Lu Wu
- Department of Pediatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Ran Li
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Hui-Wen Zhang
- Department of Surgical Intensive Care Unit, Nanjing Children's Hospital, 210000, China
| | - Rui Jin
- Department of Pediatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Jin-Ya Wang
- Department of Pediatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Chen-Xia Juan
- Department of Pediatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Kang Lu
- Department of Pediatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Jin Shu
- Department of Pediatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Lu-Lu Wang
- Department of Pediatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Yi Wang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Li-Li Zhuang
- Department of Pediatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
| | - Guo-Ping Zhou
- Department of Pediatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
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Zhou T, Zhong Y, Hu Y, Sun C, Wang Y, Wang G. PM 2.5 downregulates miR-194-3p and accelerates apoptosis in cigarette-inflamed bronchial epithelium by targeting death-associated protein kinase 1. Int J Chron Obstruct Pulmon Dis 2018; 13:2339-2349. [PMID: 30122914 PMCID: PMC6078088 DOI: 10.2147/copd.s168629] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background Persistent exposure to cigarette smoke or biomass fuels induces oxidative stress and apoptosis in bronchial epithelium, which is one of the most important pathogenic mechanisms of chronic obstructive pulmonary disease (COPD). Fine particulate matter (PM2.5) is an aggravating risk factor of COPD exacerbation. Animal evidence showed PM2.5accelerated lung inflammation and oxidative stress in COPD mice, but the mechanism is still not clear. Recently, we found that miR-194-3p is a novel biomarker of both COPD and PM2.5 exposure, and miR-194 family has been reported to be involved in cell proliferation and apoptosis. Thus, we propose a hypothesis: PM2.5 can accelerate apoptotic response of airway epithelial cells in COPD and miR-194 is a potential involved regulator. Materials and methods Human bronchial epithelial cells (HBEpiCs) were treated with normal media, cigarette smoke solution (CSS) and PM2.5-CSS for 24 h. miR-194-3p mimics, inhibitors and scrambled controls were non-transfected or pre-transfected into HBEpiCs for 48 h. MircroRNAs and mRNA expression were quantified by qRT-PCR. Protein expression was analyzed by western blotting. Caspase activities, mitochondrial membrane potential and TUNEL-positive cells were detected to analyze apoptosis. Bioinformatics and luciferase analysis were used to identify the predicted binding site of miR-194-3p and potential targets. Results In our study, we found that PM2.5 significantly aggravated apoptosis in cigarette-inflamed HBEpiCs. miR-194-3p was dramatically downregulated in PM2.5-CSS-treated HBEpiCs. Bioinformatics and luciferase experiments reported that death-associated protein kinase 1 (DAPK1), regulating caspase 3 activities in apoptosis, was directly targeted by miR-194-3p. Inhibition of miR-194-3p increased DAPK1 expression and apoptosis in normal HBEpiCs. Importantly, overexpression of miR-194-3p suppressed apoptosis in PM2.5-CSS HBEpiCs. Conclusion These results suggested that miR-194-3p was a protective regulator involved in apoptosis pathway and a potential therapeutic target for treatment of bronchial epithelial injury aggravation induced by PM2.5.
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Affiliation(s)
- Tianyu Zhou
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China,
| | - Yijue Zhong
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China,
| | - Yan Hu
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China,
| | - Chao Sun
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China,
| | - Yunxia Wang
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China,
| | - Guangfa Wang
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China,
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Pu Y, Liu Y, Liao S, Miao S, Zhou L, Wan L. Azithromycin ameliorates OVA-induced airway remodeling in Balb/c mice via suppression of epithelial-to-mesenchymal transition. Int Immunopharmacol 2018; 58:87-93. [DOI: 10.1016/j.intimp.2018.03.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 03/15/2018] [Accepted: 03/16/2018] [Indexed: 12/12/2022]
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