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Papadopoulos NG, Bacharier LB, Jackson DJ, Deschildre A, Phipatanakul W, Szefler SJ, Gall R, Ledanois O, Jacob-Nara JA, Sacks H. Type 2 Inflammation and Asthma in Children: A Narrative Review. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2024:S2213-2198(24)00634-2. [PMID: 38878861 DOI: 10.1016/j.jaip.2024.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 06/05/2024] [Accepted: 06/05/2024] [Indexed: 07/22/2024]
Abstract
Increased understanding of the underlying pathophysiology has highlighted the heterogeneity of asthma and identified that most children with asthma have type 2 inflammation with elevated biomarkers, such as blood eosinophils and/or fractional exhaled nitric oxide. Although in the past most of these children may have been categorized as having allergic asthma, identifying the type 2 inflammatory phenotype provides a mechanism to explain both allergic and non-allergic triggers in pediatric patients with asthma. Most children achieve control with low to medium doses of inhaled corticosteroids. However, in a small but significant proportion of children, asthma remains uncontrolled despite maximum conventional treatment, with an increased risk of severe exacerbations. In this review, we focus on the role of type 2 inflammation and allergic processes in children with asthma, together with evidence of the efficacy of available treatment options for those who experience severe symptoms.
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Affiliation(s)
- Nikolaos G Papadopoulos
- Allergy and Clinical Immunology Unit, Second Pediatric Clinic, University of Athens, Athens, Greece; Lydia Becker Institute of Immunity and Inflammation, The University of Manchester, Manchester, United Kingdom.
| | - Leonard B Bacharier
- Division of Allergy, Immunology and Pulmonary Medicine, Monroe Carell Jr Children's Hospital at Vanderbilt University Medical Center, Nashville, Tenn
| | - Daniel J Jackson
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, Wis
| | - Antoine Deschildre
- University Lille, CHU Lille, Pediatric Pulmonology and Allergy Department, Hôpital Jeanne de Flandre, Lille, France
| | - Wanda Phipatanakul
- Department of Pediatrics, Harvard Medical School, Boston, Mass; Department of Allergy and Immunology, Boston Children's Hospital, Boston, Mass
| | - Stanley J Szefler
- Section of Pediatric Pulmonary and Sleep Medicine, Breathing Institute, Department of Pediatrics, Children's Hospital Colorado, University of Colorado School of Medicine, Aurora, Colo
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Al-Noshokaty TM, Fathi D, Abulsoud AI, Moustafa YM, Abdel Mageed SS, Mohammed OA, Abdel-Reheim MA, Abdelmaksoud NM, Doghish AS. Harnessing the power of miRNAs: The molecular architects of asthma pathogenesis and potential targets for therapeutic innovation. Pathol Res Pract 2024; 253:155054. [PMID: 38142525 DOI: 10.1016/j.prp.2023.155054] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 12/16/2023] [Accepted: 12/19/2023] [Indexed: 12/26/2023]
Abstract
Asthma is a chronic non-communicable respiratory disease that is characterized by airway inflammation and hyperreactivity. Defective functions of airway smooth muscle and dysregulated signaling pathways play a crucial role in the pathogenesis of asthma. Anti-inflammatories and targeted therapy are mainly used for the treatment of asthma. Recent studies have investigated the role of non-coding RNAs, especially microRNAs (miRNAs; miR) in regulating gene expression and their involvement in the dysfunctional signaling pathways. In immune-mediated diseases, including asthma, miRNAs govern the actions of cells that form the airway structure and those responsible for the defense mechanisms in the bronchi and lungs. miRNAs control cell survival, proliferation, and growth, as well as the cells' capacity to produce and release chemokines and immune mediators. Moreover, miRNAs have an important role in the response to therapeutic interventions. Collectively, this review highlights the regulatory roles of miRNAs in modulating the different signaling pathways and therapeutic responses in asthma. Patients who suffer from asthma, particularly those with severe disease characteristics, may benefit from the prospective treatment options that include targeting miRNAs in order to reduce airway inflammation, hyperreactivity, and mucus production.
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Affiliation(s)
- Tohada M Al-Noshokaty
- Biochemistry Department, Faculty of Pharmacy, Heliopolis University, Cairo 11785, Egypt
| | - Doaa Fathi
- Biochemistry Department, Faculty of Pharmacy, Heliopolis University, Cairo 11785, Egypt
| | - Ahmed I Abulsoud
- Biochemistry Department, Faculty of Pharmacy, Heliopolis University, Cairo 11785, Egypt; Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Cairo 11231, Egypt.
| | - Yasser M Moustafa
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Sherif S Abdel Mageed
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Osama A Mohammed
- Department of Pharmacology, College of Medicine, University of Bisha, Bisha 61922, Saudi Arabia
| | - Mustafa Ahmed Abdel-Reheim
- Department of Pharmaceutical Sciences, College of Pharmacy, Shaqra University, Shaqra 11961, Saudi Arabia; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni Suef 62521, Egypt.
| | | | - Ahmed S Doghish
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt; Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Cairo 11231, Egypt.
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Soccio P, Moriondo G, Lacedonia D, Tondo P, Pescatore D, Quarato CMI, Carone M, Foschino Barbaro MP, Scioscia G. MiRNA and Exosomal miRNA as New Biomarkers Useful to Phenotyping Severe Asthma. Biomolecules 2023; 13:1542. [PMID: 37892224 PMCID: PMC10605226 DOI: 10.3390/biom13101542] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/09/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Severe asthma (SA) is a chronic inflammatory disease of the airways. Due to the extreme heterogeneity of symptoms, new biomarkers are currently needed. MiRNAs are non-coding RNAs that negatively regulate gene expression at the post-transcriptional level. In biological fluids, miRNAs are contained within exosomes, vesicles capable of giving miRNAs considerable stability and resistance to degradation by RNAses. The main function attributed to the exosomes is intercellular communication. The goal of our study was to analyze intracellular and exosomal miRNAs in order to demonstrate their potential use as non-invasive biomarkers of asthma by showing, in particular, their role in SA. We detected miRNAs by qRT-PCR in both serum and serum-derived-exosomes of asthmatic patients and healthy controls. The levels of almost all analyzed intracellular miRNAs (miR-21, miR-223, and let-7a) were greater in asthmatic patients vs. healthy control, except for miR-223. In detail, miR-21 was greater in SA, while let-7a increased in mild-to-moderate asthma. On the other hand, in exosomes, all analyzed miRNAs were higher in SA. This study identified a series of miRNAs involved in SA, highlighting their potential role in asthma development and progression. These results need validation on a larger cohort.
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Affiliation(s)
- Piera Soccio
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (G.M.); (D.L.); (P.T.); (D.P.); (M.P.F.B.); (G.S.)
| | - Giorgia Moriondo
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (G.M.); (D.L.); (P.T.); (D.P.); (M.P.F.B.); (G.S.)
| | - Donato Lacedonia
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (G.M.); (D.L.); (P.T.); (D.P.); (M.P.F.B.); (G.S.)
- Institute of Respiratory Diseases, Policlinico of Foggia, 71122 Foggia, Italy;
| | - Pasquale Tondo
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (G.M.); (D.L.); (P.T.); (D.P.); (M.P.F.B.); (G.S.)
| | - Dalila Pescatore
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (G.M.); (D.L.); (P.T.); (D.P.); (M.P.F.B.); (G.S.)
- Institute of Respiratory Diseases, Policlinico of Foggia, 71122 Foggia, Italy;
| | | | - Mauro Carone
- UOC Pulmonology and Pulmonary Rehabilitation, Istituti Clinici Scientifici Maugeri IRCCS—Bari, 70124 Bari, Italy;
| | - Maria Pia Foschino Barbaro
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (G.M.); (D.L.); (P.T.); (D.P.); (M.P.F.B.); (G.S.)
- Institute of Respiratory Diseases, Policlinico of Foggia, 71122 Foggia, Italy;
| | - Giulia Scioscia
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (G.M.); (D.L.); (P.T.); (D.P.); (M.P.F.B.); (G.S.)
- Institute of Respiratory Diseases, Policlinico of Foggia, 71122 Foggia, Italy;
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Yang X, Tao Y, Jin O, Lai J, Yang X. MiR-17-5p promoter methylation regulated by DNA methyltransferase 3 beta (DNMT3B) expedites endometriosis via the Krüppel-like factor 12 (KLF12)/Wnt/β-catenin axis. J Reprod Immunol 2023; 158:103974. [PMID: 37290172 DOI: 10.1016/j.jri.2023.103974] [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: 02/02/2023] [Revised: 05/26/2023] [Accepted: 06/01/2023] [Indexed: 06/10/2023]
Abstract
Endometriosis (EM) is a common chronic disease in women with a high incidence, and aberrant DNA methylation and circulating endometrial cells (CECs) have been reported to be involved in the development of EM. However, the underlying mechanisms by which DNA methylation regulates EM progression have not been fully elucidated. In our study, we demonstrated that the DNA methyltransferase 3 beta (DNMT3B)-mediated DNA methylation modification enhanced EM progression through regulating miR-17-5p/KLF12/Wnt/β-catenin axis. In detail, expression levels of miR-17-5p were significantly downregulated in EM tissues and serums, and we found that DNMT3B elevated the methylation modification of the miR-17-5p promoter, thereby suppressing the expression of miR-17-5p. Subsequently, functional experiments showed that silencing DNMT3B inhibited cell viability and epithelial-mesenchymal transition (EMT) and promoted cell apoptosis in CECs, whereas this effect could be reversed by knocking down miR-17-5p. Besides, overexpression of miR-17-5p repressed EM progression in vivo. Moreover, we found that miR-17-5p could target negative regulation of Krüppel-like factor 12 (KLF12) and KLF12 overexpression could rescue the effect of over-miR-17-5p. Besides, miR-17-5p was able to suppress the Wnt/β-catenin signaling pathway, and blocked Wnt/β-catenin pathway by XAV-939 reversed the influence of knockdown of miR-17-5p. Overall, our data indicated that DNMT3B-mediated DNA methylation leading to miR-17-5p inhibition exacerbated the process of EM by targeting KLF12/Wnt/β-catenin axis, which provided a new perspective on targeted therapies for EM.
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Affiliation(s)
- Xiaomin Yang
- Department of Gynecology, Jiaxing Hospital of Traditional Chinese Medicine, Jiaxing, Zhejiang Province 314000, China; Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province 215031, China.
| | - Yueping Tao
- Department of Gynecology, Jiaxing Hospital of Traditional Chinese Medicine, Jiaxing, Zhejiang Province 314000, China; Department of Gynecology, Zhejiang Chinese Medical University Affiliated Jiaxing TCM Hospital, Jiaxing, Zhejiang Province 314000, China; Department of Gynecology, Jiaxing University Affiliated TCM Hospital, Jiaxing, Zhejiang Province 314000, China.
| | - Ou Jin
- Department of Gynecology, Jiaxing Hospital of Traditional Chinese Medicine, Jiaxing, Zhejiang Province 314000, China; Department of Gynecology, Zhejiang Chinese Medical University Affiliated Jiaxing TCM Hospital, Jiaxing, Zhejiang Province 314000, China; Department of Gynecology, Jiaxing University Affiliated TCM Hospital, Jiaxing, Zhejiang Province 314000, China.
| | - Juan Lai
- Department of Gynecology, Jiaxing Hospital of Traditional Chinese Medicine, Jiaxing, Zhejiang Province 314000, China; Department of Gynecology, Zhejiang Chinese Medical University Affiliated Jiaxing TCM Hospital, Jiaxing, Zhejiang Province 314000, China; Department of Gynecology, Jiaxing University Affiliated TCM Hospital, Jiaxing, Zhejiang Province 314000, China.
| | - Xiaojun Yang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province 215031, China.
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Raby KL, Michaeloudes C, Tonkin J, Chung KF, Bhavsar PK. Mechanisms of airway epithelial injury and abnormal repair in asthma and COPD. Front Immunol 2023; 14:1201658. [PMID: 37520564 PMCID: PMC10374037 DOI: 10.3389/fimmu.2023.1201658] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 06/19/2023] [Indexed: 08/01/2023] Open
Abstract
The airway epithelium comprises of different cell types and acts as a physical barrier preventing pathogens, including inhaled particles and microbes, from entering the lungs. Goblet cells and submucosal glands produce mucus that traps pathogens, which are expelled from the respiratory tract by ciliated cells. Basal cells act as progenitor cells, differentiating into different epithelial cell types, to maintain homeostasis following injury. Adherens and tight junctions between cells maintain the epithelial barrier function and regulate the movement of molecules across it. In this review we discuss how abnormal epithelial structure and function, caused by chronic injury and abnormal repair, drives airway disease and specifically asthma and chronic obstructive pulmonary disease (COPD). In both diseases, inhaled allergens, pollutants and microbes disrupt junctional complexes and promote cell death, impairing the barrier function and leading to increased penetration of pathogens and a constant airway immune response. In asthma, the inflammatory response precipitates the epithelial injury and drives abnormal basal cell differentiation. This leads to reduced ciliated cells, goblet cell hyperplasia and increased epithelial mesenchymal transition, which contribute to impaired mucociliary clearance and airway remodelling. In COPD, chronic oxidative stress and inflammation trigger premature epithelial cell senescence, which contributes to loss of epithelial integrity and airway inflammation and remodelling. Increased numbers of basal cells showing deregulated differentiation, contributes to ciliary dysfunction and mucous hyperproduction in COPD airways. Defective antioxidant, antiviral and damage repair mechanisms, possibly due to genetic or epigenetic factors, may confer susceptibility to airway epithelial dysfunction in these diseases. The current evidence suggests that a constant cycle of injury and abnormal repair of the epithelium drives chronic airway inflammation and remodelling in asthma and COPD. Mechanistic understanding of injury susceptibility and damage response may lead to improved therapies for these diseases.
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Affiliation(s)
- Katie Louise Raby
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | | | - James Tonkin
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Department of Respiratory Medicine, Royal Brompton and Harefield Hospital, London, United Kingdom
| | - Kian Fan Chung
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Department of Respiratory Medicine, Royal Brompton and Harefield Hospital, London, United Kingdom
| | - Pankaj Kumar Bhavsar
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Department of Respiratory Medicine, Royal Brompton and Harefield Hospital, London, United Kingdom
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