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Carolin A, Frazer D, Yan K, Bishop CR, Tang B, Nguyen W, Helman SL, Horvat J, Larcher T, Rawle DJ, Suhrbier A. The effects of iron deficient and high iron diets on SARS-CoV-2 lung infection and disease. Front Microbiol 2024; 15:1441495. [PMID: 39296289 PMCID: PMC11408339 DOI: 10.3389/fmicb.2024.1441495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Accepted: 08/22/2024] [Indexed: 09/21/2024] Open
Abstract
Introduction The severity of Coronavirus disease 2019 (COVID-19) caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is often dictated by a range of comorbidities. A considerable literature suggests iron deficiency and iron overload may contribute to increased infection, inflammation and disease severity, although direct causal relationships have been difficult to establish. Methods Here we generate iron deficient and iron loaded C57BL/6 J mice by feeding standard low and high iron diets, with mice on a normal iron diet representing controls. All mice were infected with a primary SARS-CoV-2 omicron XBB isolate and lung inflammatory responses were analyzed by histology, immunohistochemistry and RNA-Seq. Results Compared with controls, iron deficient mice showed no significant changes in lung viral loads or histopathology, whereas, iron loaded mice showed slightly, but significantly, reduced lung viral loads and histopathology. Transcriptional changes were modest, but illustrated widespread dysregulation of inflammation signatures for both iron deficient vs. controls, and iron loaded vs. controls. Some of these changes could be associated with detrimental outcomes, whereas others would be viewed as beneficial. Discussion Diet-associated iron deficiency or overload thus induced modest modulations of inflammatory signatures, but no significant histopathologically detectable disease exacerbations.
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Affiliation(s)
- Agnes Carolin
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - David Frazer
- Molecular Nutrition, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Kexin Yan
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Cameron R Bishop
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Bing Tang
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Wilson Nguyen
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Sheridan L Helman
- Molecular Nutrition, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Jay Horvat
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, Hunter Medical Research Institute, University of Newcastle, Callaghan, NSW, Australia
| | | | - Daniel J Rawle
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Andreas Suhrbier
- Inflammation Biology, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
- GVN Centre of Excellence, Australian Infectious Disease Research Centre, Brisbane, QLD, Australia
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2
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Cao Z, Zhao S, Wu T, Sun F, Ding H, Hu S, Shi L. Genetic information supports a causal relationship between trace elements, inflammatory proteins, and COPD: evidence from a Mendelian randomization analysis. Front Nutr 2024; 11:1430606. [PMID: 39206312 PMCID: PMC11349556 DOI: 10.3389/fnut.2024.1430606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Accepted: 08/05/2024] [Indexed: 09/04/2024] Open
Abstract
Objective Dietary factors and nutritional status may be among the risk factors for Chronic Obstructive Pulmonary Disease (COPD). There exists a certain correlation between trace elements and COPD. Through Mendelian Randomization (MR) analysis, we investigated the causal relationships between trace elements, inflammatory proteins, and COPD. Methods We employed MR, multivariable MR (MVMR), and two-step MR (TSMR) approaches to assess the causal links between 15 trace elements and COPD, with 91 inflammatory proteins serving as mediators to further elucidate the tripartite causal relationships. Results Trace elements such as Folate (OR = 1.293, 95%CI 1.027-1.628; p = 0.029), Vitamin D (OR = 1.331, 95%CI 1.071-1.654; p = 0.010), Vitamin B12 (OR = 1.424, 95%CI 1.108-1.828; p = 0.006), and Iron (OR = 0.741, 95%CI 0.580-0.946; p = 0.016) demonstrated causal relationships with COPD. No causal relationship was observed in reverse MR. After adjusting for BMI, Folate (OR = 1.633, 95%CI 1.098-2.429; p = 0.015), Iron (OR = 0.507, 95%CI 0.31-0.778; p = 0.001), and Vitamin D (OR = 1.511, 95%CI 1.029-2.217; p = 0.034) were identified as independent risk factors for COPD, whereas Vitamin B12 (OR = 1.118, 95%CI 0.751-1.666; p = 0.581) was not. Mediation analysis indicated that CDCP1 (5.76%) may play a mediating role between Iron and COPD. Conclusion Trace elements such as Folate, Vitamin D, Vitamin B12, and Iron have causal relationships with COPD. After BMI adjustment, Folate, Vitamin D, and Iron emerge as independent risk factors. Furthermore, the inflammatory protein CDCP1 may partially mediate the causal relationship between Iron and COPD, offering a scientific basis for dietary recommendations that could benefit COPD patients. The supplementation of trace elements may be advantageous for individuals suffering from COPD.
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Affiliation(s)
- Zhenghua Cao
- Graduate School, Changchun University of Traditional Chinese Medicine, Changchun, Jilin, China
| | - Shengkun Zhao
- Graduate School, Changchun University of Traditional Chinese Medicine, Changchun, Jilin, China
| | - Tong Wu
- Geriatric Department, Suzhou Hospital of Integrated Traditional Chinese and Western Medicine, Suzhou, Jiangsu, China
| | - Feng Sun
- Respiratory Disease Department, Affiliated Hospital of Changchun University of Traditional Chinese Medicine, Changchun, Jilin, China
| | - Huan Ding
- Respiratory Disease Department, Affiliated Hospital of Changchun University of Traditional Chinese Medicine, Changchun, Jilin, China
| | - Shaodan Hu
- Respiratory Disease Department, Affiliated Hospital of Changchun University of Traditional Chinese Medicine, Changchun, Jilin, China
| | - Li Shi
- Respiratory Disease Department, Affiliated Hospital of Changchun University of Traditional Chinese Medicine, Changchun, Jilin, China
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Hu Y, Huang Y, Zong L, Lin J, Liu X, Ning S. Emerging roles of ferroptosis in pulmonary fibrosis: current perspectives, opportunities and challenges. Cell Death Discov 2024; 10:301. [PMID: 38914560 PMCID: PMC11196712 DOI: 10.1038/s41420-024-02078-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/13/2024] [Accepted: 06/18/2024] [Indexed: 06/26/2024] Open
Abstract
Pulmonary fibrosis (PF) is a chronic interstitial lung disorder characterized by abnormal myofibroblast activation, accumulation of extracellular matrix (ECM), and thickening of fibrotic alveolar walls, resulting in deteriorated lung function. PF is initiated by dysregulated wound healing processes triggered by factors such as excessive inflammation, oxidative stress, and coronavirus disease (COVID-19). Despite advancements in understanding the disease's pathogenesis, effective preventive and therapeutic interventions are currently lacking. Ferroptosis, an iron-dependent regulated cell death (RCD) mechanism involving lipid peroxidation and glutathione (GSH) depletion, exhibits unique features distinct from other RCD forms (e.g., apoptosis, necrosis, and pyroptosis). Imbalance between reactive oxygen species (ROS) production and detoxification leads to ferroptosis, causing cellular dysfunction through lipid peroxidation, protein modifications, and DNA damage. Emerging evidence points to the crucial role of ferroptosis in PF progression, driving macrophage polarization, fibroblast proliferation, and ECM deposition, ultimately contributing to alveolar cell death and lung tissue scarring. This review provides a comprehensive overview of the latest findings on the involvement and signaling mechanisms of ferroptosis in PF pathogenesis, emphasizing potential novel anti-fibrotic therapeutic approaches targeting ferroptosis for PF management.
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Affiliation(s)
- Yixiang Hu
- Department of Clinical Pharmacy, The Affiliated Xiangtan Center Hospital of Hunan University, Xiangtan, 411100, China
| | - Ying Huang
- Zhongshan Hospital of Traditional Chinese Medicine Afflilated to Guangzhou University of Chinese Medicine, Zhongshan, 528400, China
| | - Lijuan Zong
- Department of Rehabilitation Medicine, Zhongda Hospital of Southeast University, Nanjing, 210096, China
| | - Jiaxin Lin
- Department of Breast Surgery, The Second Affiliated Hospital of Guangxi Medical University, Nanning, 530000, China
| | - Xiang Liu
- Department of Clinical Pharmacy, The Affiliated Xiangtan Center Hospital of Hunan University, Xiangtan, 411100, China.
| | - Shipeng Ning
- Department of Breast Surgery, The Second Affiliated Hospital of Guangxi Medical University, Nanning, 530000, China.
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4
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Li M, Chen Z, Yang X, Li W. Causal relationship between iron deficiency anemia and asthma: a Mendelian randomization study. Front Pediatr 2024; 12:1362156. [PMID: 38853780 PMCID: PMC11158623 DOI: 10.3389/fped.2024.1362156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 05/06/2024] [Indexed: 06/11/2024] Open
Abstract
Background Observational studies have suggested an association between iron deficiency anemia (IDA) and asthma, which may affect the occurrence of asthma. However, whether IDA is a new management goal for asthma remains to be determined. Objective We conducted a two-sample Mendelian randomization(MR)analysis to assess the association between IDA and asthma. Methods We performed a two-sample MR study to assess a causal relationship between IDA (ncase = 12,434, ncontrol = 59,827) and asthma (ncase = 20,629, ncontrol = 135,449). Inverse variance weighted (IVW) was used as the primary method for the analyses. Furthermore, we used weighted medians and MR-Egger to enhance robustness. Data linking genetic variation to IDA and asthma were combined to assess the impact of IDA on asthma risk. Results There are five single nucleotide polymorphisms (SNPs) were used as genetic tool variables for exposure factors. Genetically determined IDA was significantly associated with an increased risk of asthma (OR = 1.37, 95% CI: 1.09-1.72, p = 0.007). There was little heterogeneity in the MR studies and no evidence of level pleiotropy was found. Conclusions In our MR study, our findings emphasize that IDA may be associated with a high risk of asthma, indicating a potential role for IDA in the development of asthma. Future research needs to elucidate its potential mechanisms to pave the way for the prevention and treatment of asthma.
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Affiliation(s)
| | | | - Xin Yang
- Department of Pediatrics, Daping Hospital, Army Medical University, Chongqing, China
| | - Wanwei Li
- Department of Pediatrics, Daping Hospital, Army Medical University, Chongqing, China
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Gan S, Lin L, Chen Z, Zhang H, Tang H, Yang C, Li J, Li S, Yao L. Ferroptosis contributes to airway epithelial E-cadherin disruption in a mixed granulocytic asthma mouse model. Exp Cell Res 2024; 438:114029. [PMID: 38608805 DOI: 10.1016/j.yexcr.2024.114029] [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: 10/27/2023] [Revised: 04/01/2024] [Accepted: 04/04/2024] [Indexed: 04/14/2024]
Abstract
Aberrant expression of airway epithelial E-cadherin is a key feature of asthma, yet the underlying mechanisms are largely unknown. Ferroptosis is a novel form of regulated cell death involved in asthma pathogenesis. This study was aimed to evaluate the role of ferroptosis and to investigate whether ferroptosis mediates E-cadherin disruption in mixed granulocyte asthma (MGA). Two murine models of MGA were established using toluene diisocyanate (TDI) or ovalbumin with Complete Freund's Adjuvant (OVA/CFA). Specific antagonists of ferroptosis, including Liproxstatin-1 (Lip-1) and Ferrostatin-1 (Fer-1) were given to the mice. The allergen-exposed mice displayed markedly shrunk mitochondria in the airway epithelia, with decreased volume and denser staining accompanied by down-regulated GPX4 as well as up-regulated FTH1 and malondialdehyde, which are markers of ferroptosis. Decreased pulmonary expression of E-cadherin was also observed, with profound loss of membrane E-cadherin in the airway epithelia, as well as increased secretion of sE-cadherin. Treatment with Lip-1 not only showed potent protective effects against the allergen-induced airway hyperresponsiveness and inflammatory responses, but also rescued airway epithelial E-cadherin expression and inhibited the release of sE-cadherin. Taken together, our data demonstrated that ferroptosis mediates airway epithelial E-cadherin dysfunction in MGA.
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Affiliation(s)
- Sudan Gan
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510180, China.
| | - Liqin Lin
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China.
| | - Zemin Chen
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510180, China.
| | - Hailing Zhang
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, 510180, China.
| | - Haixiong Tang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510180, China.
| | - Changyun Yang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510180, China.
| | - Jing Li
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510180, China.
| | - Shiyue Li
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510180, China.
| | - Lihong Yao
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510180, China.
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Pootheri A, lopez WM, Saraswathy R. A case-control study on asthma and obese patients: Influence of lifestyle patterns, serum trace elements, heavy metals, and total antioxidants. Heliyon 2024; 10:e29270. [PMID: 38644895 PMCID: PMC11033126 DOI: 10.1016/j.heliyon.2024.e29270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 03/28/2024] [Accepted: 04/03/2024] [Indexed: 04/23/2024] Open
Abstract
Background and aim Asthma is a chronic airway hyperresponsiveness disorder and Obese people have greater rates of asthma incidence and prevalence. Obesity, a complex condition, can cause nutritional metabolic problems that change trace elements and minerals. Trace element and antioxidant levels affect asthma aetiology. In this study, we aim to determine the serum levels of trace elements Zn, Fe, Cu, Mg, Co, Ni, Pb, Cd, and Cr, total antioxidants (TAS), and lifestyle that determine specific clinical conditions in asthma and obesity patients from Vellore City (Tamil Nadu, India). Methods A case-control study to determine the level of the serum trace elements with 838 subjects (n = 242 asthma patients, n = 140 asthmatic obese, n = 185 obese patients, and n = 271 controls) between the ages of 20 and 60 years was carried out. Asthma was diagnosed based on the clinical examination and pulmonary function tests. Trace element levels were determined by atomic absorption spectrophotometry (AAS) in serum, and a DPPH-free radical scavenging assay was used to determine the total antioxidant capacity level in serum. Result In asthma male patients, serum levels of Zn, Fe, Cu, Mg, and TAS were significantly lower and Pb, Cd, and Cr significantly higher, whereas in female asthma patients, serum levels of Zn, Fe, Mg, and TAS were significantly lower and Pb significantly higher. In asthmatic obese male patients, Fe, Cu, and TAS were significantly lower, and Pb, Cd, and Co were significantly higher; in asthmatic obese female patients, Zn, Fe, Cu, Mg, and TAS were significantly lower, and Ni was significantly higher. In obese male patients, Zn, Fe, Cu, and TAS were significantly lower and Cd was significantly higher, and in obese female patients, Zn, Fe, Cu, Mg, and TAS were significantly lower. Conclusion The influence of the level of trace elements, heavy metal, total antioxidant, and the lifestyle patterns, may increase the risk of asthma and obesity.
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Affiliation(s)
- Aswathi Pootheri
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, India
| | - Wilner Martinez lopez
- Genetics Department, Instituto de Investigaciones Biológicas Clemente Estable, Avenida Italia 3318, 11600, Montevideo, Uruguay
| | - Radha Saraswathy
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, India
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Zhou J, Du JY, Xu R, Wu XJ, Zhang GY. Reduced miR-513a-5p expression in COPD may regulate airway mucous cell hyperplasia through TFR1-dependent signaling. Kaohsiung J Med Sci 2024; 40:139-149. [PMID: 37916742 DOI: 10.1002/kjm2.12777] [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: 07/31/2023] [Revised: 09/18/2023] [Accepted: 10/10/2023] [Indexed: 11/03/2023] Open
Abstract
Airway mucous cell metaplasia and mucous hypersecretion is one of the key characteristic pathophysiological status of chronic obstructive pulmonary disease (COPD). micro(mi)RNAs are acknowledged as non-encoding RNA molecules playing important roles in gene expression regulation. In this study, we searched the Gene Expression Omnibus (GEO) database for the differentially expressed miRNAs between COPD and non-COPD controls with bioinformatics analysis. Finally, we focused on miR-513a-5p and investigated the potential mechanism by which miR-513a-5p regulates airway mucous hypersecretion and goblet cell metaplasia. A dual-luciferase reporter assay was then showing that miR-513a-5p targeted the 3'-UTR of TFR1 and inhibited its expression in vitro. In vivo transfection demonstrated that TFR1 downregulation partially blocked MUC5AC hypersecretion and goblet cell hyperplasia in COPD model rats. In vitro study, CSE increased the intracellular expression and secretion of MUC5AC by BEAS-2B branchial epithelial cells in the BEAS-2B cell and THP-1 cell coculture system. Coculture with either miR-513a-5p mimic-pretreated or TFR1-deficient THP-1 cells attenuated intracellular MUC5AC expression in BEAS-2B cells exposed to CSE. ELISA demonstrated that transfection of TFR1 siRNA or pretreatment with miR-513a-5p mimic reduced the secretion of inflammatory factors that are responsible for airway goblet cell hyperplasia, such as IL-1β, IL-13, and IL-17, by THP-1 cells after CSE stimulation. Our findings supported that miR-513a-5p/TFR1 signaling axis might activate macrophages as well as promote airway inflammation and airway mucous cell hyperplasia in COPD.
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Affiliation(s)
- Jia Zhou
- Department of Respiratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Jun-Yi Du
- Standardized Training Base For Resident Physician, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Rui Xu
- Department of Respiratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Xiao-Juan Wu
- Department of Respiratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
- Department of Respiratory and Critical Care Medicine, Suining Central Hospital, Suining, Sichuan, People's Republic of China
| | - Guo-Yue Zhang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
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Song J, Zhang H, Tong Y, Wang Y, Xiang Q, Dai H, Weng C, Wang L, Fan J, Shuai Y, Lai C, Fang X, Chen M, Bao J, Zhang W. Molecular mechanism of interleukin-17A regulating airway epithelial cell ferroptosis based on allergic asthma airway inflammation. Redox Biol 2023; 68:102970. [PMID: 38035662 PMCID: PMC10711239 DOI: 10.1016/j.redox.2023.102970] [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: 10/20/2023] [Accepted: 11/19/2023] [Indexed: 12/02/2023] Open
Abstract
Interleukin-17A (IL-17A) levels are elevated in patients with asthma. Ferroptosis has been identified as the non-apoptotic cell death type associated with asthma. Data regarding the relation of ferroptosis with asthma and the effect of IL-17A on modulating ferroptosis in asthma remain largely unclear. The present work focused on investigating the role of IL-17A in allergic asthma-related ferroptosis and its associated molecular mechanisms using public datasets, clinical samples, human bronchial epithelial cells, and an allergic asthma mouse model. We found that IL-17A was significantly upregulated within serum in asthma cases. Adding IL-17A significantly increased ferroptosis within human bronchial epithelial cells (BEAS-2B). In ovalbumin (OVA)-induced allergic asthmatic mice, IL-17A regulated and activated lipid peroxidation induced ferroptosis, whereas IL-17A knockdown effectively inhibited ferroptosis in vivo by protection of airway epithelial cells via the xCT-GSH-GPX4 antioxidant system and reduced airway inflammation. Mouse mRNA sequencing results indicated that the tumor necrosis factor (TNF) pathway was the differential KEGG pathway in the OVA group compared to healthy controls and the OVA group compared to the IL-17A knockout OVA group. We further used N-acetylcysteine (TNF inhibitor) to inhibit the TNF signaling pathway, which was found to protect BEAS-2B cells from IL-17A induced lipid peroxidation and ferroptosis damage. Our findings reveal a novel mechanism for the suppression of ferroptosis in airway epithelial cells, which may represent a new strategy for the use of IL-17A inhibitors against allergic asthma.
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Affiliation(s)
- Jingjing Song
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Hui Zhang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Yu Tong
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Yufei Wang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Qiangwei Xiang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Huan Dai
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Cuiye Weng
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China; Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Lei Wang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Junwen Fan
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Yilong Shuai
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Chuqiao Lai
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Xiaoxiao Fang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Mingxin Chen
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Jiali Bao
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Weixi Zhang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China.
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Liu X, Ali MK, Dua K, Mao Y, Liu J. Circular RNAs: emerging players in asthma and COPD. Front Cell Dev Biol 2023; 11:1267792. [PMID: 38078005 PMCID: PMC10704470 DOI: 10.3389/fcell.2023.1267792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 11/14/2023] [Indexed: 10/16/2024] Open
Abstract
Circular RNAs (circRNAs) belong to a unique class of endogenously expressed non-protein-coding RNAs with a distinct circularized structure, characterized by the absence of 5'-cap and 3'-polyadenylate ends. They are generally formed through back-splicing from pre-mRNAs. They serve as regulators of transcription and splicing, and act as sponges for microRNAs (miRNAs) and RNA-binding proteins, thereby modulating the expression of target genes. As a result, they exert a substantial impact on a diverse array of cellular and biological processes, including cell proliferation, migration, inflammation, and oxidative stress. Asthma and COPD are chronic airway conditions that currently have no cure. In recent years, emerging evidence suggests that altered expression of circRNAs in airway, bronchial and immune cells is involved in asthma and COPD pathogenesis. Studies exploring circRNA dysregulation in asthma have showcased their involvement in regulating the proliferation, migration, and inflammation of airway smooth muscle and bronchial epithelial cells, as well as impacting goblet cell metaplasia, Th2 cell differentiation, and macrophage activation, primarily through interactions with miRNAs. Similarly, in COPD, circRNAs have shown altered expression patterns in the blood and lungs of patients, and these changes have been linked to modulating inflammation, oxidative stress, and airway remodeling in preclinical models. Furthermore, certain circRNAs have demonstrated promising potential as diagnostic and prognostic biomarkers for both asthma and COPD. This review delves into the current understanding of the function and molecular mechanisms of circRNAs in asthma and COPD, along with exploring their potential as biomarkers in these respiratory conditions.
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Affiliation(s)
- Xiaoying Liu
- Department of Breast Surgery, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Md Khadem Ali
- Pre-Professional Health Academic Program, California State University, Hayward, CA, United States
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney, NSW, Australia
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW, Australia
- Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, India
| | - Yuqiang Mao
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang, China
- Clinical Skills Practice Teaching Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jun Liu
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang, China
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Riihimäki M, Fegraeus K, Nordlund J, Waern I, Wernersson S, Akula S, Hellman L, Raine A. Single-cell transcriptomics delineates the immune cell landscape in equine lower airways and reveals upregulation of FKBP5 in horses with asthma. Sci Rep 2023; 13:16261. [PMID: 37758813 PMCID: PMC10533524 DOI: 10.1038/s41598-023-43368-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 09/22/2023] [Indexed: 09/29/2023] Open
Abstract
Equine asthma (EA) is a heterogenous, complex disease, with a significant negative impact on horse welfare and performance. EA and human asthma share fundamental similarities, making EA a useful model for studying the disease. One relevant sample type for investigating chronic lung inflammation is bronchoalveolar lavage fluid (BALF), which provides a snapshot of the immune cells present in the alveolar space. To investigate the immune cell landscape of the respiratory tract in horses with mild-to-moderate equine asthma (mEA) and healthy controls, single-cell RNA sequencing was conducted on equine BALF cells. We characterized the major immune cell populations present in equine BALF, as well as subtypes thereof. Interestingly, the most significantly upregulated gene discovered in cases of mEA was FKBP5, a chaperone protein involved in regulating the activity of the glucocorticoid receptor.
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Affiliation(s)
- Miia Riihimäki
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Kim Fegraeus
- Department of Medical Sciences, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Jessica Nordlund
- Department of Medical Sciences, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Ida Waern
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Sara Wernersson
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Srinivas Akula
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, Sweden
| | - Amanda Raine
- Department of Medical Sciences, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.
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11
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Shrestha J, Paudel KR, Nazari H, Dharwal V, Bazaz SR, Johansen MD, Dua K, Hansbro PM, Warkiani ME. Advanced models for respiratory disease and drug studies. Med Res Rev 2023; 43:1470-1503. [PMID: 37119028 PMCID: PMC10946967 DOI: 10.1002/med.21956] [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: 02/15/2022] [Revised: 02/02/2023] [Accepted: 03/17/2023] [Indexed: 04/30/2023]
Abstract
The global burden of respiratory diseases is enormous, with many millions of people suffering and dying prematurely every year. The global COVID-19 pandemic witnessed recently, along with increased air pollution and wildfire events, increases the urgency of identifying the most effective therapeutic measures to combat these diseases even further. Despite increasing expenditure and extensive collaborative efforts to identify and develop the most effective and safe treatments, the failure rates of drugs evaluated in human clinical trials are high. To reverse these trends and minimize the cost of drug development, ineffective drug candidates must be eliminated as early as possible by employing new, efficient, and accurate preclinical screening approaches. Animal models have been the mainstay of pulmonary research as they recapitulate the complex physiological processes, Multiorgan interplay, disease phenotypes of disease, and the pharmacokinetic behavior of drugs. Recently, the use of advanced culture technologies such as organoids and lung-on-a-chip models has gained increasing attention because of their potential to reproduce human diseased states and physiology, with clinically relevant responses to drugs and toxins. This review provides an overview of different animal models for studying respiratory diseases and evaluating drugs. We also highlight recent progress in cell culture technologies to advance integrated models and discuss current challenges and present future perspectives.
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Affiliation(s)
- Jesus Shrestha
- School of Biomedical EngineeringUniversity of Technology SydneySydneyNew South WalesAustralia
| | - Keshav Raj Paudel
- Centre for InflammationCentenary Institute and University of Technology SydneySydneyNew South WalesAustralia
| | - Hojjatollah Nazari
- School of Biomedical EngineeringUniversity of Technology SydneySydneyNew South WalesAustralia
| | - Vivek Dharwal
- Centre for InflammationCentenary Institute and University of Technology SydneySydneyNew South WalesAustralia
| | - Sajad Razavi Bazaz
- School of Biomedical EngineeringUniversity of Technology SydneySydneyNew South WalesAustralia
| | - Matt D. Johansen
- Centre for InflammationCentenary Institute and University of Technology SydneySydneyNew South WalesAustralia
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of HealthUniversity of TechnologySydneyNew South WalesAustralia
- Faculty of Health, Australian Research Centre in Complementary & Integrative MedicineUniversity of Technology SydneyUltimoNew South WalesAustralia
| | - Philip M. Hansbro
- Centre for InflammationCentenary Institute and University of Technology SydneySydneyNew South WalesAustralia
| | - Majid Ebrahimi Warkiani
- School of Biomedical EngineeringUniversity of Technology SydneySydneyNew South WalesAustralia
- Institute for Biomedical Materials and Devices, Faculty of ScienceUniversity of Technology SydneyUltimoNew South WalesAustralia
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12
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Vanders RL, Gomez HM, Hsu AC, Daly K, Wark PAB, Horvat JC, Hansbro PM. Inflammatory and antiviral responses to influenza A virus infection are dysregulated in pregnant mice with allergic airway disease. Am J Physiol Lung Cell Mol Physiol 2023; 325:L385-L398. [PMID: 37463835 DOI: 10.1152/ajplung.00232.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 06/23/2023] [Accepted: 06/27/2023] [Indexed: 07/20/2023] Open
Abstract
Influenza A virus (IAV) infections are increased during pregnancy especially with asthma as a comorbidity, leading to asthma exacerbations, secondary bacterial infections, intensive care unit admissions, and mortality. We aimed to define the processes involved in increased susceptibility and severity of IAV infections during pregnancy, especially with asthma. We sensitized mice to house dust mite (HDM), induced pregnancy, and challenged with HDM to induce allergic airway disease (AAD). At midpregnancy, we induced IAV infection. We assessed viral titers, airway inflammation, lung antiviral responses, mucus hypersecretion, and airway hyperresponsiveness (AHR). During early IAV infection, pregnant mice with AAD had increased mRNA expression of the inflammatory markers Il13 and IL17 and reduced mRNA expression of the neutrophil chemoattractant marker Kc. These mice had increased mucous hyperplasia and increased AHR. miR155, miR574, miR223, and miR1187 were also reduced during early infection, as was mRNA expression of the antiviral β-defensins, Bd1, Bd2, and Spd and IFNs, Ifnα, Ifnβ, and Ifnλ. During late infection, Il17 was still increased as was eosinophil infiltration in the lungs. mRNA expression of Kc was reduced, as was neutrophil infiltration and mRNA expression of the antiviral markers Ifnβ, Ifnλ, and Ifnγ and Ip10, Tlr3, Tlr9, Pkr, and Mx1. Mucous hyperplasia was still significantly increased as was AHR. Early phase IAV infection in pregnancy with asthma heightens underlying inflammatory asthmatic phenotype and reduces antiviral responses.NEW & NOTEWORTHY Influenza A virus (IAV) infection during pregnancy with asthma is a major health concern leading to increased morbidity for both mother and baby. Using murine models, we show that IAV infection in pregnancy with allergic airway disease is associated with impaired global antiviral and antimicrobial responses, increased lung inflammation, mucus hypersecretion, and airway hyperresponsiveness (AHR). Targeting specific β-defensins or microRNAs (miRNAs) may prove useful in future treatments for IAV infection during pregnancy.
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Affiliation(s)
- Rebecca L Vanders
- Priority Research Centre for Healthy Lungs, The University of Newcastle, Newcastle, New South Wales, Australia
- Vaccines, Infection, Viruses and Asthma Research Program, Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Henry M Gomez
- Priority Research Centre for Healthy Lungs, The University of Newcastle, Newcastle, New South Wales, Australia
- Vaccines, Infection, Viruses and Asthma Research Program, Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Alan C Hsu
- Priority Research Centre for Healthy Lungs, The University of Newcastle, Newcastle, New South Wales, Australia
- Vaccines, Infection, Viruses and Asthma Research Program, Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Katie Daly
- Priority Research Centre for Healthy Lungs, The University of Newcastle, Newcastle, New South Wales, Australia
- Vaccines, Infection, Viruses and Asthma Research Program, Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Peter A B Wark
- Priority Research Centre for Healthy Lungs, The University of Newcastle, Newcastle, New South Wales, Australia
- Vaccines, Infection, Viruses and Asthma Research Program, Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Jay C Horvat
- Priority Research Centre for Healthy Lungs, The University of Newcastle, Newcastle, New South Wales, Australia
- Vaccines, Infection, Viruses and Asthma Research Program, Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Philip M Hansbro
- Priority Research Centre for Healthy Lungs, The University of Newcastle, Newcastle, New South Wales, Australia
- Vaccines, Infection, Viruses and Asthma Research Program, Hunter Medical Research Institute, Newcastle, New South Wales, Australia
- Faculty of Science, School of Life Sciences, Centre for Inflammation, Centenary Institute and University of Technology Sydney, Sydney, New South Wales, Australia
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13
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Wang C, Hua S, Song L. Ferroptosis in pulmonary fibrosis: an emerging therapeutic target. Front Physiol 2023; 14:1205771. [PMID: 37664432 PMCID: PMC10470006 DOI: 10.3389/fphys.2023.1205771] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 07/28/2023] [Indexed: 09/05/2023] Open
Abstract
In recent years, the role of ferroptosis in pulmonary fibrosis has garnered increasing interest as a potential therapeutic target. Pulmonary fibrosis is a pathological process characterized by the accumulation of extracellular matrix in affected lung tissues, and currently, there are no effective therapies for preventing or reversing the fibrotic lesions. Ferroptosis is a form of programmed cell death that is regulated by a network of enzymes and signaling pathways. Dysregulation of ferroptosis has been implicated in several diseases, including pulmonary fibrosis. The accumulation of lipid peroxides in the course of ferroptosis causes damage to cell membranes and other cellular components, leading ultimately to cell death. Relevant targets for therapeutic intervention in ferroptosis include key enzymes, such as glutathione peroxidase 4, transcription factors like nuclear factor erythroid 2-related factor 2, and iron chelation. This review provides an overview of the emerging role of ferroptosis in pulmonary fibrosis and highlights potential therapeutic targets in this pathway. Further research is needed to develop safe and effective approaches targeting ferroptosis in treatment of pulmonary fibrosis.
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Affiliation(s)
- Chunyan Wang
- Department of General Practice, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, The First Hospital of Jilin University, Changchun, China
| | - Shucheng Hua
- Department of Respiratory Medicine, Center for Pathogen Biology and Infectious Diseases, The First Hospital of Jilin University, Changchun, China
| | - Lei Song
- Department of Respiratory Medicine, Center for Pathogen Biology and Infectious Diseases, The First Hospital of Jilin University, Changchun, China
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14
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Liu L, Zhou L, Wang LL, Zheng PD, Zhang FQ, Mao ZY, Zhang HJ, Liu HG. Programmed Cell Death in Asthma: Apoptosis, Autophagy, Pyroptosis, Ferroptosis, and Necroptosis. J Inflamm Res 2023; 16:2727-2754. [PMID: 37415620 PMCID: PMC10321329 DOI: 10.2147/jir.s417801] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 06/20/2023] [Indexed: 07/08/2023] Open
Abstract
Bronchial asthma is a complex heterogeneous airway disease, which has emerged as a global health issue. A comprehensive understanding of the different molecular mechanisms of bronchial asthma may be an efficient means to improve its clinical efficacy in the future. Increasing research evidence indicates that some types of programmed cell death (PCD), including apoptosis, autophagy, pyroptosis, ferroptosis, and necroptosis, contributed to asthma pathogenesis, and may become new targets for future asthma treatment. This review briefly discusses the molecular mechanism and signaling pathway of these forms of PCD focuses on summarizing their roles in the pathogenesis and treatment strategies of asthma and offers some efficient means to improve clinical efficacy of therapeutics for asthma in the near future.
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Affiliation(s)
- Lu Liu
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Pulmonary Diseases of Health Ministry, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Ling Zhou
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Pulmonary Diseases of Health Ministry, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Ling-Ling Wang
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Pulmonary Diseases of Health Ministry, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Peng-Dou Zheng
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Pulmonary Diseases of Health Ministry, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Feng-Qin Zhang
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Pulmonary Diseases of Health Ministry, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Zhen-Yu Mao
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Pulmonary Diseases of Health Ministry, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Huo-Jun Zhang
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, People’s Republic of China
| | - Hui-Guo Liu
- Department of Respiratory and Critical Care Medicine, Key Laboratory of Pulmonary Diseases of Health Ministry, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
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15
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Wang Z, He Y, Li Q, Zhao Y, Zhang G, Luo Z. Dysregulation of iron homeostasis in airways associated with persistent preschool wheezing. Respir Res 2023; 24:170. [PMID: 37353771 DOI: 10.1186/s12931-023-02466-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 06/01/2023] [Indexed: 06/25/2023] Open
Abstract
BACKGROUND Currently, there are no reliable clinical tools available to identify persistent asthma symptoms among preschool children with recurrent wheezing. We investigated iron homeostasis in the airways of preschoolers with recurrent wheezing and assessed whether iron homeostasis-related indices may reliably predict persistent wheezing. METHODS Iron levels and mRNA expression levels of iron homeostasis molecules were examined in bronchoalveolar lavage samples from 89 preschoolers with recurrent wheezing and 56 controls, with a 12-month follow-up conducted. Risk factors for persistent wheezing were identified using least absolute shrinkage and selection operator and multivariate logistic regression. The addition of predictive values of iron indices to the modified Asthma Predictive Index (mAPI) or clinical predictors was determined using area under receiver operating characteristic curves (AUC). RESULTS Preschoolers with recurrent wheezing had reduced iron levels in their airways, associated with significantly decreased expression of iron export molecule SLC40A1 and increased expression of iron intake factor TFR1 and iron storage factors FTH and FTL. Risk factors for persistent wheezing included mAPI positivity, iron predictors (lower expression of SLC40A1 and higher expression of FTL), and clinical predictors (aeroallergen sensitivity, shorter breastfeeding duration, and earlier age of first wheezing episode). The addition of information on iron predictors significantly enhanced the power of clinical predictors (AUC: 84%, increase of 12%) and mAPI (AUC: 81%, increase of 14%). CONCLUSIONS Iron homeostasis is altered in the airways of preschoolers with recurrent wheezing. Adding information on iron-related indices to clinical information significantly improves accurate prediction of persistent wheezing in preschool-aged children.
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Affiliation(s)
- Zhili Wang
- Department of Respiratory Medicine, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, National Clinical Research Center for Child Health and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Yu He
- Department of Respiratory Medicine, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, National Clinical Research Center for Child Health and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Qinyuan Li
- Department of Respiratory Medicine, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, National Clinical Research Center for Child Health and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Yan Zhao
- Department of Respiratory Medicine, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, National Clinical Research Center for Child Health and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Guangli Zhang
- Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing, 401122, China
| | - Zhengxiu Luo
- Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing, 401122, China.
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16
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Li Y, Yan B, Wu Y, Peng Q, Wei Y, Chen Y, Zhang Y, Ma N, Yang X, Ma P. Ferroptosis participates in dibutyl phthalate-aggravated allergic asthma in ovalbumin-sensitized mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 256:114848. [PMID: 37018853 DOI: 10.1016/j.ecoenv.2023.114848] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 03/24/2023] [Accepted: 03/28/2023] [Indexed: 06/19/2023]
Abstract
Dibutyl phthalate (DBP), used as a plasticizer, is of wide concern as an environmental pollutant since it has certain immunotoxicity. Although there is growing evidence supporting a link between DBP exposure and allergic airway inflammation, there is less information concerned with whether the ferroptosis pathway is involved in DBP-aggravated allergic asthma in ovalbumin (OVA)-sensitized mice. This study aimed to investigate the role and underlying mechanisms of ferroptosis in DBP-exposed allergic asthmatic mice. Balb/c mice were orally exposed to 40 mg/kg-1 DBP for 28 days, followed by sensitization with OVA and seven consecutive challenges with nebulized OVA. We analyzed airway hyperresponsiveness (AHR), immunoglobulins, inflammation and pulmonary histopathology, to investigate whether DBP exacerbates allergic asthma in OVA-induced mice. We also measured the biomarkers of ferroptosis (Fe2+, GPX4, PTGS2), proteins related to the ferroptosis pathway (VEGF, IL-33, HMGB1, SLC7A11, ALOX15, PEBP1), and indices of lipid peroxidation (ROS, Lipid ROS, GSH, MDA, 4-HNE), to explore the role of ferroptosis in DBP+OVA mice. Finally, we used ferrostatin-1 (Fer-1) as an antagonist against the harmful effects of DBP. The results showed that, DBP+OVA mice had a significant increase in AHR, airway wall remodeling and airway inflammation. Further, we showed that DBP aggravated allergic asthma via ferroptosis and lipid peroxidation, and that Fer-1 inhibited ferroptosis and alleviated the pulmonary toxicity of DBP. These results suggest that ferroptosis participates in the exacerbation of allergic asthma resulting from oral exposure to DBP, highlighting a novel pathway for the connection between DBP and allergic asthma.
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Affiliation(s)
- Yan Li
- Xianning Engineering Research Center for Healthy Environment, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, PR China
| | - Biao Yan
- Xianning Engineering Research Center for Healthy Environment, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, PR China
| | - Yang Wu
- Xianning Engineering Research Center for Healthy Environment, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, PR China
| | - Qi Peng
- Xianning Engineering Research Center for Healthy Environment, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, PR China
| | - Yaolu Wei
- Xianning Engineering Research Center for Healthy Environment, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, PR China
| | - Yenan Chen
- Xianning Engineering Research Center for Healthy Environment, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, PR China
| | - Yuping Zhang
- Xianning Engineering Research Center for Healthy Environment, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, PR China
| | - Ning Ma
- Xianning Engineering Research Center for Healthy Environment, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, PR China
| | - Xu Yang
- Xianning Engineering Research Center for Healthy Environment, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, PR China; Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan 430079, PR China
| | - Ping Ma
- Xianning Engineering Research Center for Healthy Environment, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, PR China.
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17
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Rodriguez-Rodriguez L, Gillet L, Machiels B. Shaping of the alveolar landscape by respiratory infections and long-term consequences for lung immunity. Front Immunol 2023; 14:1149015. [PMID: 37081878 PMCID: PMC10112541 DOI: 10.3389/fimmu.2023.1149015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/15/2023] [Indexed: 04/07/2023] Open
Abstract
Respiratory infections and especially viral infections, along with other extrinsic environmental factors, have been shown to profoundly affect macrophage populations in the lung. In particular, alveolar macrophages (AMs) are important sentinels during respiratory infections and their disappearance opens a niche for recruited monocytes (MOs) to differentiate into resident macrophages. Although this topic is still the focus of intense debate, the phenotype and function of AMs that recolonize the niche after an inflammatory insult, such as an infection, appear to be dictated in part by their origin, but also by local and/or systemic changes that may be imprinted at the epigenetic level. Phenotypic alterations following respiratory infections have the potential to shape lung immunity for the long-term, leading to beneficial responses such as protection against allergic airway inflammation or against other infections, but also to detrimental responses when associated with the development of immunopathologies. This review reports the persistence of virus-induced functional alterations in lung macrophages, and discusses the importance of this imprinting in explaining inter-individual and lifetime immune variation.
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18
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Carroll OR, Pillar AL, Brown AC, Feng M, Chen H, Donovan C. Advances in respiratory physiology in mouse models of experimental asthma. Front Physiol 2023; 14:1099719. [PMID: 37008013 PMCID: PMC10060990 DOI: 10.3389/fphys.2023.1099719] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 02/07/2023] [Indexed: 03/18/2023] Open
Abstract
Recent advances in mouse models of experimental asthma coupled with vast improvements in systems that assess respiratory physiology have considerably increased the accuracy and human relevance of the outputs from these studies. In fact, these models have become important pre-clinical testing platforms with proven value and their capacity to be rapidly adapted to interrogate emerging clinical concepts, including the recent discovery of different asthma phenotypes and endotypes, has accelerated the discovery of disease-causing mechanisms and increased our understanding of asthma pathogenesis and the associated effects on lung physiology. In this review, we discuss key distinctions in respiratory physiology between asthma and severe asthma, including the magnitude of airway hyperresponsiveness and recently discovered disease drivers that underpin this phenomenon such as structural changes, airway remodeling, airway smooth muscle hypertrophy, altered airway smooth muscle calcium signaling, and inflammation. We also explore state-of-the-art mouse lung function measurement techniques that accurately recapitulate the human scenario as well as recent advances in precision cut lung slices and cell culture systems. Furthermore, we consider how these techniques have been applied to recently developed mouse models of asthma, severe asthma, and asthma-chronic obstructive pulmonary disease overlap, to examine the effects of clinically relevant exposures (including ovalbumin, house dust mite antigen in the absence or presence of cigarette smoke, cockroach allergen, pollen, and respiratory microbes) and to increase our understanding of lung physiology in these diseases and identify new therapeutic targets. Lastly, we focus on recent studies that examine the effects of diet on asthma outcomes, including high fat diet and asthma, low iron diet during pregnancy and predisposition to asthma development in offspring, and environmental exposures on asthma outcomes. We conclude our review with a discussion of new clinical concepts in asthma and severe asthma that warrant investigation and how we could utilize mouse models and advanced lung physiology measurement systems to identify factors and mechanisms with potential for therapeutic targeting.
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Affiliation(s)
- Olivia R. Carroll
- Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW, Australia
| | - Amber L. Pillar
- Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW, Australia
| | - Alexandra C. Brown
- Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW, Australia
| | - Min Feng
- Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW, Australia
| | - Hui Chen
- Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW, Australia
| | - Chantal Donovan
- Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW, Australia
- Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW, Australia
- *Correspondence: Chantal Donovan,
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19
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Tang W, Qin J, Zhou Y, Wang W, Teng F, Liu J, Yi L, Cui J, Zhu X, Wang S, Dong J, Wei Y. Regulation of ferroptosis and ACSL4-15LO1 pathway contributed to the anti-asthma effect of acupuncture. Int Immunopharmacol 2023; 115:109670. [PMID: 36603356 DOI: 10.1016/j.intimp.2022.109670] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 12/25/2022] [Accepted: 12/29/2022] [Indexed: 01/05/2023]
Abstract
Acupuncture has been frequently used in China for the treatment asthma for thousands of years. Ferroptosis was recently revealed to be involved in several pathological conditions including asthma. However, the detailed links between ferroptosis and airway inflammation in asthma, as well as the detailed regulation of acupuncture on these disorders remains unclear. Our results demonstrated that the non-haem Fe2+ level increased markedly in the lung tissue of mouse asthma model, and positively correlated with RL and IL-4 level in BALF. Furthermore, lipid peroxidation markers MDA and GSSG increased remarkably in OVA-induced experimental asthma mice. Up-regulation of lipid peroxidation associated proteins ACSL4 and15-LO1 was also observed in OVA-induced experimental asthma mice. To demonstrate the role of ferroptosis in asthma and the effect of acupuncture on these disorders, ferroptosis-induction agent erastin and ferroptosis-inhibition agent fer-1 were used, and our data demonstrated that erastin could augment lung inflammation and lipid peroxidation in OVA induced asthma model. Fer-1 was able to relieve AHR, lung inflammation, non-haem Fe2+ level, lipid peroxidation and ferroptosis related pathway ACSL4-15LO1 in OVA-induced experimental asthma mice. Acupuncture treatment alleviated RL, lung inflammation as well as type 2 cytokines IL-4 and IL-13 levels induced by OVA inhalation. What's more, acupuncture significantly reduced the MDA and GSSG levels, the non-haem Fe2+ level and ACSL4-15-LO1 proteins expression. Acupuncture also relieved erastin-induced exacerbation in lung inflammation and lipid peroxidation in ferroptosis. Acupuncture treatment could relieve ferroptosis related exacerbation in airway inflammation. Our study provided insights into the underlying mechanisms for the protective effects of acupuncture and highlighted a therapeutic potential of acupuncture treatment in the attenuation of lipid peroxidation and ferroptosis in asthma.
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Affiliation(s)
- Weifeng Tang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Jingjing Qin
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Yaolong Zhou
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Wenqian Wang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Fangzhou Teng
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Jiaqi Liu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - La Yi
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Jie Cui
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Xueyi Zhu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Shiyuan Wang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Jingcheng Dong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China.
| | - Ying Wei
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China.
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20
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Ali MK, Tian X, Zhao L, Schimmel K, Rhodes CJ, Wilkins MR, Nicolls MR, Spiekerkoetter EF. PTPN1 Deficiency Modulates BMPR2 Signaling and Induces Endothelial Dysfunction in Pulmonary Arterial Hypertension. Cells 2023; 12:316. [PMID: 36672250 PMCID: PMC9857213 DOI: 10.3390/cells12020316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 01/17/2023] Open
Abstract
Bone morphogenic protein receptor 2 (BMPR2) expression and signaling are impaired in pulmonary arterial hypertension (PAH). How BMPR2 signaling is decreased in PAH is poorly understood. Protein tyrosine phosphatases (PTPs) play important roles in vascular remodeling in PAH. To identify whether PTPs modify BMPR2 signaling, we used a siRNA-mediated high-throughput screening of 22,124 murine genes in mouse myoblastoma reporter cells using ID1 expression as readout for BMPR2 signaling. We further experimentally validated the top hit, PTPN1 (PTP1B), in healthy human pulmonary arterial endothelial cells (PAECs) either silenced by siRNA or exposed to hypoxia and confirmed its relevance to PAH by measuring PTPN1 levels in blood and PAECs collected from PAH patients. We identified PTPN1 as a novel regulator of BMPR2 signaling in PAECs, which is downregulated in the blood of PAH patients, and documented that downregulation of PTPN1 is linked to endothelial dysfunction in PAECs. These findings point to a potential involvement for PTPN1 in PAH and will aid in our understanding of the molecular mechanisms involved in the disease.
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Affiliation(s)
- Md Khadem Ali
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Stanford University, Stanford, CA 94305, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford University, Stanford, CA 94305, USA
| | - Xuefei Tian
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Stanford University, Stanford, CA 94305, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford University, Stanford, CA 94305, USA
| | - Lan Zhao
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Stanford University, Stanford, CA 94305, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford University, Stanford, CA 94305, USA
| | - Katharina Schimmel
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Stanford University, Stanford, CA 94305, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford University, Stanford, CA 94305, USA
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Christopher J. Rhodes
- National Heart and Lung Institute, Hammersmith Campus, Imperial College London, London W12 0NN, UK
| | - Martin R. Wilkins
- National Heart and Lung Institute, Hammersmith Campus, Imperial College London, London W12 0NN, UK
| | - Mark R. Nicolls
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Stanford University, Stanford, CA 94305, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford University, Stanford, CA 94305, USA
| | - Edda F. Spiekerkoetter
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Stanford University, Stanford, CA 94305, USA
- Vera Moulton Wall Center for Pulmonary Vascular Disease, Stanford University, Stanford, CA 94305, USA
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21
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Tu X, Gomez HM, Kim RY, Brown AC, de Jong E, Galvao I, Faiz A, Bosco A, Horvat JC, Hansbro P, Donovan C. Airway and parenchyma transcriptomics in a house dust mite model of experimental asthma. Respir Res 2023; 24:32. [PMID: 36698141 PMCID: PMC9878882 DOI: 10.1186/s12931-022-02298-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 12/15/2022] [Indexed: 01/26/2023] Open
Abstract
Lung transcriptomics studies in asthma have provided valuable information in the whole lung context, however, deciphering the individual contributions of the airway and parenchyma in disease pathogenesis may expedite the development of novel targeted treatment strategies. In this study, we performed transcriptomics on the airway and parenchyma using a house dust mite (HDM)-induced model of experimental asthma that replicates key features of the human disease. HDM exposure increased the expression of 3,255 genes, of which 212 were uniquely increased in the airways, 856 uniquely increased in the parenchyma, and 2187 commonly increased in both compartments. Further interrogation of these genes using a combination of network and transcription factor enrichment analyses identified several transcription factors that regulate airway and/or parenchymal gene expression, including transcription factor EC (TFEC), transcription factor PU.1 (SPI1), H2.0-like homeobox (HLX), metal response element binding transcription factor-1 (MTF1) and E74-like factor 4 (ets domain transcription factor, ELF4) involved in controlling innate immune responses. We next assessed the effects of inhibiting lung SPI1 responses using commercially available DB1976 and DB2313 on key disease outcomes. We found that both compounds had no protective effects on airway inflammation, however DB2313 (8 mg/kg) decreased mucus secreting cell number, and both DB2313 (1 mg/kg) and DB1976 (2.5 mg/kg and 1 mg/kg) reduced small airway collagen deposition. Significantly, both compounds decreased airway hyperresponsiveness. This study demonstrates that SPI1 is important in HDM-induced experimental asthma and that its pharmacological inhibition reduces HDM-induced airway collagen deposition and hyperresponsiveness.
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Affiliation(s)
- Xiaofan Tu
- grid.266842.c0000 0000 8831 109XPriority Centre for Healthy Lungs, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW Australia
| | - Henry M. Gomez
- grid.266842.c0000 0000 8831 109XPriority Centre for Healthy Lungs, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW Australia
| | - Richard Y. Kim
- grid.266842.c0000 0000 8831 109XPriority Centre for Healthy Lungs, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW Australia ,grid.117476.20000 0004 1936 7611Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW Australia
| | - Alexandra C. Brown
- grid.266842.c0000 0000 8831 109XPriority Centre for Healthy Lungs, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW Australia
| | - Emma de Jong
- Centre for Health Research, Telethon Kids Institute, The University of Western Australia, Nedlands, WA Australia
| | - Izabela Galvao
- grid.117476.20000 0004 1936 7611Centre for Inflammation, Faculty of Science, School of Life Sciences, Centenary Institute and University of Technology Sydney, Sydney, NSW Australia
| | - Alen Faiz
- grid.117476.20000 0004 1936 7611Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW Australia
| | - Anthony Bosco
- grid.134563.60000 0001 2168 186XAsthma and Airway Disease Research Center, University of Arizona, Arizona, USA
| | - Jay C. Horvat
- grid.266842.c0000 0000 8831 109XPriority Centre for Healthy Lungs, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW Australia
| | - Philip Hansbro
- grid.266842.c0000 0000 8831 109XPriority Centre for Healthy Lungs, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW Australia ,grid.117476.20000 0004 1936 7611Centre for Inflammation, Faculty of Science, School of Life Sciences, Centenary Institute and University of Technology Sydney, Sydney, NSW Australia
| | - Chantal Donovan
- grid.266842.c0000 0000 8831 109XPriority Centre for Healthy Lungs, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW Australia ,grid.117476.20000 0004 1936 7611Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW Australia
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22
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Wang Z, He Y, Cun Y, Li Q, Zhao Y, Luo Z. Transcriptomic analysis identified SLC40A1 as a key iron metabolism-related gene in airway macrophages in childhood allergic asthma. Front Cell Dev Biol 2023; 11:1164544. [PMID: 37123407 PMCID: PMC10133523 DOI: 10.3389/fcell.2023.1164544] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 04/05/2023] [Indexed: 05/02/2023] Open
Abstract
Introduction: Asthma is the most common chronic condition in children, with allergic asthma being the most common phenotype, accounting for approximately 80% of cases. Growing evidence suggests that disruption of iron homeostasis and iron regulatory molecules may be associated with childhood allergic asthma. However, the underlying molecular mechanism remains unclear. Methods: Three childhood asthma gene expression datasets were analyzed to detect aberrant expression profiles of iron metabolism-related genes in the airways of children with allergic asthma. Common iron metabolism-related differentially expressed genes (DEGs) across the three datasets were identified and were subjected to functional enrichment analysis. Possible correlations between key iron metabolism-related DEGs and type 2 airway inflammatory genes were investigated. Single-cell transcriptome analysis further identified major airway cell subpopulations driving key gene expression. Key iron metabolism-related gene SLC40A1 was validated in bronchoalveolar lavage (BAL) cells from childhood asthmatics with control individuals by quantitative reverse transcription-polymerase chain reaction (qRT-PCR) and immunofluorescence. The intracellular iron content in BAL cells was assessed by Perls iron staining and the iron levels in BAL supernatant was measured by iron assay to assess airway iron metabolism status in childhood asthmatics. Results: Five common iron metabolism-related DEGs were identified, which were functionally related to iron homeostasis. Among these genes, downregulated SLC40A1 was strongly correlated with type 2 airway inflammatory markers and the gene signature of SLC40A1 could potentially be used to determine type 2-high and type 2-low subsets in childhood allergic asthmatics. Further single-cell transcriptomic analysis identified airway macrophages driving SLC40A1 expression. Immunofluorescence staining revealed colocalization of FPN (encoded by SLC40A1) and macrophage marker CD68. Down-regulation of SLC40A1 (FPN) was validated by qRT-PCR and immunofluorescence analysis. Results further indicated reduced iron levels in the BAL fluid, but increased iron accumulation in BAL cells in childhood allergic asthma patients. Furthermore, decreased expression of SLC40A1 was closely correlated with reduced iron levels in the airways of children with allergic asthma. Discussion: Overall, these findings reveal the potential role of the iron metabolism-related gene SLC40A1 in the pathogenesis of childhood allergic asthma.
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Affiliation(s)
- Zhili Wang
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Department of Respiratory Medicine, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Yu He
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Department of Respiratory Medicine, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Yupeng Cun
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Department of Respiratory Medicine, Children’s Hospital of Chongqing Medical University, Chongqing, China
- China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Qinyuan Li
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Department of Respiratory Medicine, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Yan Zhao
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Department of Respiratory Medicine, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Zhengxiu Luo
- Department of Respiratory Medicine, Children’s Hospital of Chongqing Medical University, Chongqing, China
- *Correspondence: Zhengxiu Luo,
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23
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Li M, Li M, Hou Y, HE H, Jiang R, Wang C, Sun S. Ferroptosis triggers airway inflammation in asthma. Ther Adv Respir Dis 2023; 17:17534666231208628. [PMID: 37947059 PMCID: PMC10638875 DOI: 10.1177/17534666231208628] [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: 01/14/2023] [Accepted: 09/29/2023] [Indexed: 11/12/2023] Open
Abstract
Ferroptosis is a regulatory cell death characterized by intracellular iron accumulation and lipid peroxidation that leads to oxidative stress. Many signaling pathways such as iron metabolism, lipid metabolism, and amino acid metabolism precisely regulate the process of ferroptosis. Ferroptosis is involved in a variety of lung diseases, such as acute lung injury, chronic obstructive pulmonary disease (COPD) and pulmonary fibrosis. Increasing studies suggest that ferroptosis is involved in the development of asthma. Ferroptosis plays an important role in asthma. Iron metabolism disorders, lipid peroxidation, amino acid metabolism disorders lead to the occurrence of ferroptosis in airway epithelial cells, and then aggravate clinical symptoms in asthmatic patients. Moreover, several regulators of ferroptosis are involved in the pathogenesis of asthma, such as Nrf2, heme oxygenase-1, mevalonate pathway, and ferroptosis inhibitor protein 1. Importantly, ferroptosis inhibitors improve asthma. Thus, the pathogenesis of ferroptosis and its contribution to the pathogenesis of asthma help us better understand the occurrence and development of asthma, and provide new directions in asthma treatment. This article aimed to review the role and mechanism of ferroptosis in asthma, describing the relationship between ferroptosis and asthma based on signaling pathways and related regulatory factors. At the same time, we summarized current observations of ferroptosis in eosinophils, airway epithelial cells, and airway smooth muscle cells in asthmatic patients.
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Affiliation(s)
- Minming Li
- Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital, Kunming Medical University, Kunming, China
- Pediatric Medicine Class One, Kunming Medical University, Kunming, China
| | - Min Li
- Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Yunjiao Hou
- Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Huilin HE
- Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Ruonan Jiang
- Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital, Kunming Medical University, Kunming, China
- Pediatric Medicine Class One, Kunming Medical University, Kunming, China
| | - Chu Wang
- Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Shibo Sun
- Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital, Kunming Medical University, No.295, Xichang Road, Wuhua District, Kunming 650032, China
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24
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Marathe SJ, Snider MA, Flores-Torres AS, Dubin PJ, Samarasinghe AE. Human matters in asthma: Considering the microbiome in pulmonary health. Front Pharmacol 2022; 13:1020133. [PMID: 36532717 PMCID: PMC9755222 DOI: 10.3389/fphar.2022.1020133] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 11/15/2022] [Indexed: 07/25/2023] Open
Abstract
Microbial communities form an important symbiotic ecosystem within humans and have direct effects on health and well-being. Numerous exogenous factors including airborne triggers, diet, and drugs impact these established, but fragile communities across the human lifespan. Crosstalk between the mucosal microbiota and the immune system as well as the gut-lung axis have direct correlations to immune bias that may promote chronic diseases like asthma. Asthma initiation and pathogenesis are multifaceted and complex with input from genetic, epigenetic, and environmental components. In this review, we summarize and discuss the role of the airway microbiome in asthma, and how the environment, diet and therapeutics impact this low biomass community of microorganisms. We also focus this review on the pediatric and Black populations as high-risk groups requiring special attention, emphasizing that the whole patient must be considered during treatment. Although new culture-independent techniques have been developed and are more accessible to researchers, the exact contribution the airway microbiome makes in asthma pathogenesis is not well understood. Understanding how the airway microbiome, as a living entity in the respiratory tract, participates in lung immunity during the development and progression of asthma may lead to critical new treatments for asthma, including population-targeted interventions, or even more effective administration of currently available therapeutics.
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Affiliation(s)
- Sandesh J. Marathe
- Department of Pediatrics, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
- Division of Pulmonology, Allergy-Immunology, and Sleep, Memphis, TN, United States
- Children’s Foundation Research Institute, Le Bonheur Children’s Hospital, Memphis, TN, United States
| | - Mark A. Snider
- Department of Pediatrics, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
- Division of Emergency Medicine, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Armando S. Flores-Torres
- Department of Pediatrics, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
- Children’s Foundation Research Institute, Le Bonheur Children’s Hospital, Memphis, TN, United States
| | - Patricia J. Dubin
- Department of Pediatrics, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
- Division of Pulmonology, Allergy-Immunology, and Sleep, Memphis, TN, United States
| | - Amali E. Samarasinghe
- Department of Pediatrics, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
- Division of Pulmonology, Allergy-Immunology, and Sleep, Memphis, TN, United States
- Children’s Foundation Research Institute, Le Bonheur Children’s Hospital, Memphis, TN, United States
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25
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Fagundes RR, Bourgonje AR, Hu S, Barbieri R, Jansen BH, Sinnema N, Blokzijl T, Taylor CT, Weersma RK, Faber KN, Dijkstra G. HIF1α-Dependent Induction of TFRC by a Combination of Intestinal Inflammation and Systemic Iron Deficiency in Inflammatory Bowel Disease. Front Physiol 2022; 13:889091. [PMID: 35755436 PMCID: PMC9214203 DOI: 10.3389/fphys.2022.889091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/20/2022] [Indexed: 01/04/2023] Open
Abstract
Background and Aims: Iron deficiency (ID) is a frequent extra-intestinal manifestation in patients with Inflammatory Bowel Disease (IBD), who often do not respond to iron supplementation. Iron is a cofactor for hydroxylases that suppress the hypoxia-inducible factor-1α (HIF1α), a transcription factor regulating iron homeostasis. We hypothesized that iron deficiency affects mucosal HIF1α activity in IBD. Methods: IBD patients (n = 101) were subdivided based on iron status (ferritin levels or transferrin saturation) and systemic inflammation (C-reactive protein levels). 154 corresponding ileal and colonic biopsies were analyzed for differential expression of 20 HIF1α pathway-associated genes and related to iron and inflammation status. In vitro expression of selected HIF1α pathway genes were analyzed in wild-type and HIF1A-null Caco-2 cells. Results: Gene expression of the mucosal HIF1α pathway was most affected by intestinal location and inflammatory status. Especially, ileal mucosal TFRC expression, encoding the transferrin receptor TFR1, was increased in inflamed tissue (p < 0.001), and further enhanced in ID. Accordingly, TFRC expression in inflamed tissue associated negatively with serum iron levels, which was not observed in the non-inflamed mucosa. The HIF1α pathway agonist DMOG increased TFRC expression in Caco-2 cells, which was blunted in HIF1A-null cells. Conclusion: We demonstrate that inflammation and anatomical location primarily determine HIF1α pathway activation and downstream TFRC expression in the intestinal mucosa. IBD patients with ID may benefit from treatment with HIF1α-agonists by 1) increasing TFRC-mediated iron absorption in non-inflamed tissue and 2) decreasing mucosal inflammation, thereby improving their responsiveness to oral iron supplementation.
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Affiliation(s)
- Raphael R Fagundes
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Arno R Bourgonje
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Shixian Hu
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Ruggero Barbieri
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Bernadien H Jansen
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Nienke Sinnema
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Tjasso Blokzijl
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Cormac T Taylor
- School of Medicine and Medical Science and the Conway Institute, University College Dublin, Dublin, Ireland
| | - Rinse K Weersma
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Klaas Nico Faber
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Gerard Dijkstra
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
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26
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Zeng Z, Huang H, Zhang J, Liu Y, Zhong W, Chen W, Lu Y, Qiao Y, Zhao H, Meng X, Zou F, Cai S, Dong H. HDM induce airway epithelial cell ferroptosis and promote inflammation by activating ferritinophagy in asthma. FASEB J 2022; 36:e22359. [PMID: 35621121 DOI: 10.1096/fj.202101977rr] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 04/22/2022] [Accepted: 05/10/2022] [Indexed: 12/12/2022]
Abstract
Asthma is a disease characterized by airway epithelial barrier destruction, chronic airway inflammation, and airway remodeling. Repeated damage to airway epithelial cells by allergens in the environment plays an important role in the pathophysiology of asthma. Ferroptosis is a novel form of regulated cell death mediated by lipid peroxidation in association with free iron-mediated Fenton reactions. In this study, we explored the contribution of ferroptosis to house dust mite (HDM)-induced asthma models. Our in vivo and in vitro models showed labile iron accumulation and enhanced lipid peroxidation with concomitant nonapoptotic cell death upon HDM exposure. Treatment with ferroptosis inhibitors deferoxamine (DFO) and ferrostatin-1 (Fer-1) illuminated the role of ferroptosis and related damage-associated molecular patterns in HDM-treated airway epithelial cells. Furthermore, DFO and Fer-1 reduced HDM-induced airway inflammation in model mice. Mechanistically, NCOA4-mediated ferritin-selective autophagy (ferritinophagy) was initiated during ferritin degradation in response to HDM exposure. Together, these data suggest that ferroptosis plays an important role in HDM-induced asthma and that ferroptosis may be a potential treatment target for HDM-induced asthma.
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Affiliation(s)
- Zhaojin Zeng
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Haohua Huang
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jinming Zhang
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yuanyuan Liu
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wenshan Zhong
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Weimou Chen
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ye Lu
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yujie Qiao
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Haijin Zhao
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaojing Meng
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Occupational Health and Medicine, School of Public Health, Southern Medical University, Guangzhou, China
| | - Fei Zou
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Occupational Health and Medicine, School of Public Health, Southern Medical University, Guangzhou, China
| | - Shaoxi Cai
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hangming Dong
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
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27
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Tu X, Kim RY, Brown AC, de Jong E, Jones-Freeman B, Ali MK, Gomez HM, Budden KF, Starkey MR, Cameron GJM, Loering S, Nguyen DH, Nair PM, Haw TJ, Alemao CA, Faiz A, Tay HL, Wark PAB, Knight DA, Foster PS, Bosco A, Horvat JC, Hansbro PM, Donovan C. Airway and parenchymal transcriptomics in a novel model of asthma and COPD overlap. J Allergy Clin Immunol 2022; 150:817-829.e6. [PMID: 35643377 DOI: 10.1016/j.jaci.2022.04.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 03/29/2022] [Accepted: 04/21/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND Asthma and chronic obstructive pulmonary disease (COPD) are common chronic respiratory diseases, and some patients have overlapping disease features, termed asthma-COPD overlap (ACO). Patients characterized with ACO have increased disease severity; however, the mechanisms driving this have not been widely studied. OBJECTIVES This study sought to characterize the phenotypic and transcriptomic features of experimental ACO in mice induced by chronic house dust mite antigen and cigarette smoke exposure. METHODS Female BALB/c mice were chronically exposed to house dust mite antigen for 11 weeks to induce experimental asthma, cigarette smoke for 8 weeks to induce experimental COPD, or both concurrently to induce experimental ACO. Lung inflammation, structural changes, and lung function were assessed. RNA-sequencing was performed on separated airway and parenchyma lung tissues to assess transcriptional changes. Validation of a novel upstream driver SPI1 in experimental ACO was assessed using the pharmacological SPI1 inhibitor, DB2313. RESULTS Experimental ACO recapitulated features of both asthma and COPD, with mixed pulmonary eosinophilic/neutrophilic inflammation, small airway collagen deposition, and increased airway hyperresponsiveness. Transcriptomic analysis identified common and distinct dysregulated gene clusters in airway and parenchyma samples in experimental asthma, COPD, and ACO. Upstream driver analysis revealed increased expression of the transcription factor Spi1. Pharmacological inhibition of SPI1 using DB2313, reduced airway remodeling and airway hyperresponsiveness in experimental ACO. CONCLUSIONS A new experimental model of ACO featuring chronic dual exposures to house dust mite and cigarette smoke mimics key disease features observed in patients with ACO and revealed novel disease mechanisms, including upregulation of SPI1, that are amenable to therapy.
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Affiliation(s)
- Xiaofan Tu
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Richard Y Kim
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia; Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, Australia
| | - Alexandra C Brown
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Emma de Jong
- Telethon Kids Institute, Centre for Health Research, The University of Western Australia, Nedlands, Australia
| | - Bernadette Jones-Freeman
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia; Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, Australia
| | - Md Khadem Ali
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Henry M Gomez
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Kurtis F Budden
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Malcolm R Starkey
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia; Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, Australia
| | - Guy J M Cameron
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Svenja Loering
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Duc H Nguyen
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Prema Mono Nair
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Tatt Jhong Haw
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Charlotte A Alemao
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Alen Faiz
- Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, Australia
| | - Hock L Tay
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Peter A B Wark
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Darryl A Knight
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia; Providence Health Care Research Institute, Vancouver, British Columbia, Canada
| | - Paul S Foster
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Anthony Bosco
- Telethon Kids Institute, Centre for Health Research, The University of Western Australia, Nedlands, Australia
| | - Jay C Horvat
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia
| | - Philip M Hansbro
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia; Centre for Inflammation, Faculty of Science, School of Life Sciences, Centenary Institute and University of Technology Sydney, Sydney, Australia.
| | - Chantal Donovan
- Priority Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, Australia; Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, Australia.
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Wang Y, Gu LF, Zhao X, Hu C, Chen Q. TFR1 expression in induced sputum is associated with asthma severity. PeerJ 2022; 10:e13474. [PMID: 35602900 PMCID: PMC9121881 DOI: 10.7717/peerj.13474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 04/29/2022] [Indexed: 01/14/2023] Open
Abstract
Background Asthma is characterized as a chronic inflammatory airway disease. Iron accumulation is related to asthma pathogenesis. Transferrin receptor 1(TFR1) expression is associated with intracellular iron overload in macrophages. In our study, we explored the association among TFR1 expression, the inflammatory macrophage phenotype, and asthma severity. Methods Induced sputum was collected from 50 asthma patients. Real-time PCR was used to evaluate mRNA expression. The status of inflammatory macrophage phenotype was assessed using flow cytometry. Results TFR1 levels were inversely correlated with forced expiratory volume in 1 s (FEV1)/forced vital capacity (FVC) and FEV1/vital capacity (VC). Among inflammatory cytokines, TFR1 expression was positively correlated with IL-1β, TNF-α, IL-6, IFN-γ, and IL-17A mRNA expression in induced sputum. Moreover, TFR1 expression was positively correlated with the number of proinflammatory M1 macrophages and iNOS expression in induced sputum. Neutrophil counts in induced sputum were significantly and positively related to TFR1 expression. Furthermore, TFR1 expression showed an increasing trend in asthma patients with no family history. Our findings indicated that TFR1 expression was consistent with the asthma severity index, especially the proinflammatory M1 macrophage phenotype. TFR1 expression may be a good marker to indicate asthma severity.
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Affiliation(s)
- Yang Wang
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - li Feng Gu
- Hunan Children’s Hospital, Changsha, Hunan, China
| | - Xincheng Zhao
- Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Chengping Hu
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qiong Chen
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
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Role of Iron in Aging Related Diseases. Antioxidants (Basel) 2022; 11:antiox11050865. [PMID: 35624729 PMCID: PMC9137504 DOI: 10.3390/antiox11050865] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/17/2022] [Accepted: 04/25/2022] [Indexed: 02/05/2023] Open
Abstract
Iron progressively accumulates with age and can be further exacerbated by dietary iron intake, genetic factors, and repeated blood transfusions. While iron plays a vital role in various physiological processes within the human body, its accumulation contributes to cellular aging in several species. In its free form, iron can initiate the formation of free radicals at a cellular level and contribute to systemic disorders. This is most evident in high iron conditions such as hereditary hemochromatosis, when accumulation of iron contributes to the development of arthritis, cirrhosis, or cardiomyopathy. A growing body of research has further identified iron’s contributory effects in neurodegenerative diseases, ocular disorders, cancer, diabetes, endocrine dysfunction, and cardiovascular diseases. Reducing iron levels by repeated phlebotomy, iron chelation, and dietary restriction are the common therapeutic considerations to prevent iron toxicity. Chelators such as deferoxamine, deferiprone, and deferasirox have become the standard of care in managing iron overload conditions with other potential applications in cancer and cardiotoxicity. In certain animal models, drugs with iron chelating ability have been found to promote health and even extend lifespan. As we further explore the role of iron in the aging process, iron chelators will likely play an increasingly important role in our health.
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Uwagboe I, Adcock IM, Lo Bello F, Caramori G, Mumby S. New drugs under development for COPD. Minerva Med 2022; 113:471-496. [PMID: 35142480 DOI: 10.23736/s0026-4806.22.08024-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The characteristic features of chronic obstructive pulmonary disease (COPD) include inflammation and remodelling of the lower airways and lung parenchyma together with activation of inflammatory and immune processes. Due to the increasing habit of cigarette smoking worldwide COPD prevalence is increasing globally. Current therapies are unable to prevent COPD progression in many patients or target many of its hallmark characteristics which may reflect the lack of adequate biomarkers to detect the heterogeneous clinical and molecular nature of COPD. In this chapter we review recent molecular data that may indicate novel pathways that underpin COPD subphenotypes and indicate potential improvements in the classes of drugs currently used to treat COPD. We also highlight the evidence for new drugs or approaches to treat COPD identified using molecular and other approaches including kinase inhibitors, cytokine- and chemokine-directed biologicals and small molecules, antioxidants and redox signalling pathway inhibitors, inhaled anti-infectious agents and senolytics. It is important to consider the phenotypes/molecular endotypes of COPD patients together with specific outcome measures to target new therapies to particular COPD subtypes. This will require greater understanding of COPD molecular pathologies and a focus on biomarkers of predicting disease subsets and responder/non-responder populations.
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Affiliation(s)
- Isabel Uwagboe
- Airways Disease Section, National Heart and Lung Institute, Imperial College, London, UK
| | - Ian M Adcock
- Airways Disease Section, National Heart and Lung Institute, Imperial College, London, UK -
| | - Federica Lo Bello
- Pneumologia, Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (BIOMORF), Università di Messina, Messina, Italy
| | - Gaetano Caramori
- Pneumologia, Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (BIOMORF), Università di Messina, Messina, Italy
| | - Sharon Mumby
- Airways Disease Section, National Heart and Lung Institute, Imperial College, London, UK
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Ferrostatin-1 and 3-Methyladenine Ameliorate Ferroptosis in OVA-Induced Asthma Model and in IL-13-Challenged BEAS-2B Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:9657933. [PMID: 35154576 PMCID: PMC8837457 DOI: 10.1155/2022/9657933] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 12/09/2021] [Accepted: 01/04/2022] [Indexed: 12/12/2022]
Abstract
Ferroptosis was reported to be involved in the occurrence and development of asthma. However, the potential mechanism underlying the role of ferroptosis in asthma remains unclear. In this study, we established the mouse asthma model following the ovalbumin (OVA) method in C57BL/6 mice and the cell model with IL-13 induction in bronchial epithelial cells (BEAS-2B cells). Treatment of ferrostatin-1 (Ferr-1) and 3-methyladenine (3-MA) decreased iron deposition in IL-13-induced BEAS-2B cells and lung tissues of asthma mice, opposite to that in bronchoalveolar lavage fluid (BALF). Meanwhile, excessive lipid peroxidation asthma model in vivo and in vitro was alleviated by Ferr-1 or 3-MA treatment. In addition, Ferr-1 and 3-MA inhibited the expression of LC-3 in these cells and lung tissues of mice. Moreover, Ferr-1 and 3-MA also suppressed the production of inflammatory cytokines (IL-1β, IL-6, and TNF-α) and oxidative stress factors (ROS and MDA), while promoting the level of SOD, in vivo and in vitro. Furthermore, application of Ferr-1 exhibited a greater inhibitory effect on iron release and lipid peroxidation in IL-13-induced BEAS-2B cells and asthma mice than 3-MA, accompanied with a weaker effect on ferritinophagy than 3-MA. Collectively, Ferr-1 and 3-MA ameliorated asthma in vivo and in vitro through inhibiting ferroptosis, providing a new strategy for the clinical treatment of asthma.
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Ho T, Nichols M, Nair G, Radford K, Kjarsgaard M, Huang C, Bhalla A, Lavigne N, Mukherjee M, Surette M, Macri J, Nair P. Iron in airway macrophages and infective exacerbations of chronic obstructive pulmonary disease. Respir Res 2022; 23:8. [PMID: 35022042 PMCID: PMC8756761 DOI: 10.1186/s12931-022-01929-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 01/04/2022] [Indexed: 12/31/2022] Open
Abstract
Background Excess pulmonary iron has been implicated in the pathogenesis of lung disease, including asthma and COPD. An association between higher iron content in sputum macrophages and infective exacerbations of COPD has previously been demonstrated. Objectives To assess the mechanisms of pulmonary macrophage iron sequestration, test the effect of macrophage iron-loading on cellular immune function, and prospectively determine if sputum hemosiderin index can predict infectious exacerbations of COPD. Methods Intra- and extracellular iron was measured in cell-line-derived and in freshly isolated sputum macrophages under various experimental conditions including treatment with exogenous IL-6 and hepcidin. Bacterial uptake and killing were compared in the presence or absence of iron-loading. A prospective cohort of COPD patients with defined sputum hemosiderin indices were monitored to determine the annual rate of severe infectious exacerbations. Results Gene expression studies suggest that airway macrophages have the requisite apparatus of the hepcidin-ferroportin axis. IL-6 and hepcidin play roles in pulmonary iron sequestration, though IL-6 appears to exert its effect via a hepcidin-independent mechanism. Iron-loaded macrophages had reduced uptake of COPD-relevant organisms and were associated with higher growth rates. Infectious exacerbations were predicted by sputum hemosiderin index (β = 0.035, p = 0.035). Conclusions We demonstrate in-vitro and population-level evidence that excess iron in pulmonary macrophages may contribute to recurrent airway infection in COPD. Specifically, IL-6-dependent iron sequestration by sputum macrophages may result in immune cell dysfunction and ultimately lead to increased frequency of infective exacerbation. Supplementary Information The online version contains supplementary material available at 10.1186/s12931-022-01929-7.
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Affiliation(s)
- Terence Ho
- Department of Medicine, McMaster University, Hamilton, Canada. .,Firestone Institute for Respiratory Health, St. Joseph's Healthcare Hamilton, 50 Charlton Avenue East, Hamilton, ON, L8N 4A6, Canada.
| | - Matthew Nichols
- Department of Pathology and Laboratory Medicine, Western University, London, Canada
| | - Gayatri Nair
- Department of Medicine, McMaster University, Hamilton, Canada
| | | | | | - Chynna Huang
- St. Joseph's Healthcare Hamilton, Hamilton, Canada
| | - Anurag Bhalla
- Department of Medicine, McMaster University, Hamilton, Canada.,Firestone Institute for Respiratory Health, St. Joseph's Healthcare Hamilton, 50 Charlton Avenue East, Hamilton, ON, L8N 4A6, Canada
| | | | | | - Michael Surette
- Department of Medicine, McMaster University, Hamilton, Canada
| | - Joseph Macri
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Canada
| | - Parameswaran Nair
- Department of Medicine, McMaster University, Hamilton, Canada.,Firestone Institute for Respiratory Health, St. Joseph's Healthcare Hamilton, 50 Charlton Avenue East, Hamilton, ON, L8N 4A6, Canada
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Gomez HM, Pillar AL, Brown AC, Kim RY, Ali MK, Essilfie AT, Vanders RL, Frazer DM, Anderson GJ, Hansbro PM, Collison AM, Jensen ME, Murphy VE, Johnstone DM, Reid D, Milward EA, Donovan C, Horvat JC. Investigating the Links between Lower Iron Status in Pregnancy and Respiratory Disease in Offspring Using Murine Models. Nutrients 2021; 13:nu13124461. [PMID: 34960012 PMCID: PMC8708709 DOI: 10.3390/nu13124461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 11/16/2022] Open
Abstract
Maternal iron deficiency occurs in 40-50% of all pregnancies and is associated with an increased risk of respiratory disease and asthma in children. We used murine models to examine the effects of lower iron status during pregnancy on lung function, inflammation and structure, as well as its contribution to increased severity of asthma in the offspring. A low iron diet during pregnancy impairs lung function, increases airway inflammation, and alters lung structure in the absence and presence of experimental asthma. A low iron diet during pregnancy further increases these major disease features in offspring with experimental asthma. Importantly, a low iron diet increases neutrophilic inflammation, which is indicative of more severe disease, in asthma. Together, our data demonstrate that lower dietary iron and systemic deficiency during pregnancy can lead to physiological, immunological and anatomical changes in the lungs and airways of offspring that predispose to greater susceptibility to respiratory disease. These findings suggest that correcting iron deficiency in pregnancy using iron supplements may play an important role in preventing or reducing the severity of respiratory disease in offspring. They also highlight the utility of experimental models for understanding how iron status in pregnancy affects disease outcomes in offspring and provide a means for testing the efficacy of different iron supplements for preventing disease.
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Affiliation(s)
- Henry M. Gomez
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, and Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (H.M.G.); (A.L.P.); (A.C.B.); (R.Y.K.); (M.K.A.); (R.L.V.); (P.M.H.); (E.A.M.); (C.D.)
| | - Amber L. Pillar
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, and Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (H.M.G.); (A.L.P.); (A.C.B.); (R.Y.K.); (M.K.A.); (R.L.V.); (P.M.H.); (E.A.M.); (C.D.)
| | - Alexandra C. Brown
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, and Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (H.M.G.); (A.L.P.); (A.C.B.); (R.Y.K.); (M.K.A.); (R.L.V.); (P.M.H.); (E.A.M.); (C.D.)
| | - Richard Y. Kim
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, and Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (H.M.G.); (A.L.P.); (A.C.B.); (R.Y.K.); (M.K.A.); (R.L.V.); (P.M.H.); (E.A.M.); (C.D.)
- Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Md Khadem Ali
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, and Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (H.M.G.); (A.L.P.); (A.C.B.); (R.Y.K.); (M.K.A.); (R.L.V.); (P.M.H.); (E.A.M.); (C.D.)
| | - Ama-Tawiah Essilfie
- QIMR Berghofer Medical Research Institute, Herston, QLD 4006, Australia; (A.-T.E.); (D.M.F.); (G.J.A.); (D.R.)
| | - Rebecca L. Vanders
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, and Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (H.M.G.); (A.L.P.); (A.C.B.); (R.Y.K.); (M.K.A.); (R.L.V.); (P.M.H.); (E.A.M.); (C.D.)
| | - David M. Frazer
- QIMR Berghofer Medical Research Institute, Herston, QLD 4006, Australia; (A.-T.E.); (D.M.F.); (G.J.A.); (D.R.)
- School of Biomedical Sciences, The University of Queensland, St Lucia, QLD 4067, Australia
| | - Gregory J. Anderson
- QIMR Berghofer Medical Research Institute, Herston, QLD 4006, Australia; (A.-T.E.); (D.M.F.); (G.J.A.); (D.R.)
- School of Chemistry and Molecular Bioscience, The University of Queensland, St Lucia, QLD 4067, Australia
| | - Philip M. Hansbro
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, and Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (H.M.G.); (A.L.P.); (A.C.B.); (R.Y.K.); (M.K.A.); (R.L.V.); (P.M.H.); (E.A.M.); (C.D.)
- Centre for Inflammation, School of Life Sciences, Faculty of Science, Centenary Institute and University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Adam M. Collison
- School of Medicine and Public Health, College of Health, Medicine and Wellbeing, and Priority Research Centre for GrowUpWell, The University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (A.M.C.); (M.E.J.); (V.E.M.)
| | - Megan E. Jensen
- School of Medicine and Public Health, College of Health, Medicine and Wellbeing, and Priority Research Centre for GrowUpWell, The University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (A.M.C.); (M.E.J.); (V.E.M.)
| | - Vanessa E. Murphy
- School of Medicine and Public Health, College of Health, Medicine and Wellbeing, and Priority Research Centre for GrowUpWell, The University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (A.M.C.); (M.E.J.); (V.E.M.)
| | - Daniel M. Johnstone
- School of Medical Sciences, University of Sydney, Camperdown, NSW 2050, Australia;
| | - David Reid
- QIMR Berghofer Medical Research Institute, Herston, QLD 4006, Australia; (A.-T.E.); (D.M.F.); (G.J.A.); (D.R.)
| | - Elizabeth A. Milward
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, and Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (H.M.G.); (A.L.P.); (A.C.B.); (R.Y.K.); (M.K.A.); (R.L.V.); (P.M.H.); (E.A.M.); (C.D.)
| | - Chantal Donovan
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, and Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (H.M.G.); (A.L.P.); (A.C.B.); (R.Y.K.); (M.K.A.); (R.L.V.); (P.M.H.); (E.A.M.); (C.D.)
- Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Jay C. Horvat
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, and Priority Research Centre for Healthy Lungs, University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW 2308, Australia; (H.M.G.); (A.L.P.); (A.C.B.); (R.Y.K.); (M.K.A.); (R.L.V.); (P.M.H.); (E.A.M.); (C.D.)
- Correspondence: ; Tel.: +612-4042-0220
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Li S, Zhang H, Chang J, Li D, Cao P. Iron overload and mitochondrial dysfunction orchestrate pulmonary fibrosis. Eur J Pharmacol 2021; 912:174613. [PMID: 34740581 DOI: 10.1016/j.ejphar.2021.174613] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 09/06/2021] [Accepted: 09/11/2021] [Indexed: 12/26/2022]
Abstract
Pulmonary fibrosis (PF) is a chronic, progressive heterogeneous disease of lung tissues with poor lung function caused by scar tissue. Due to our limited understanding of its mechanism, there is currently no treatment strategy that can prevent the development of PF. In recent years, iron accumulation and mitochondrial damage have been reported to participate in PF, and drugs that reduce iron content and improve mitochondrial function have shown significant efficacy in animal experimental models. Excessive iron leads to mitochondrial impairment, which may be the key cause that results in the dysfunction of various kinds of pulmonary cells and further promotes PF. As an emerging research hotspot, there are few targeted effective therapeutic strategies at present due to limited mechanistic understanding. In this review, the roles of iron homeostasis imbalance and mitochondrial damage in PF are summarized and discussed, highlighting a promising direction for finding truly effective therapeutics for PF.
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Affiliation(s)
- Shuxin Li
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, 050024, People's Republic of China
| | - Hongmin Zhang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, 050024, People's Republic of China
| | - Jing Chang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, 050024, People's Republic of China
| | - Dongming Li
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, 050024, People's Republic of China.
| | - Pengxiu Cao
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, 050024, People's Republic of China.
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Mineral Micronutrients in Asthma. Nutrients 2021; 13:nu13114001. [PMID: 34836256 PMCID: PMC8625329 DOI: 10.3390/nu13114001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/07/2021] [Accepted: 11/08/2021] [Indexed: 01/01/2023] Open
Abstract
Asthma represents one of the most common medical issues in the modern world. It is a chronic inflammatory disease characterized by persistent inflammation of the airways and disturbances in redox status, leading to hyperresponsiveness of bronchi and airway obstruction. Apart from classical risk factors such as air pollution, family history, allergies, or obesity, disturbances of the levels of micronutrients lead to impairments in the defense mechanisms of the affected organism against oxidative stress and proinflammatory stimuli. In the present review, the impact of micronutrients on the prevalence, severity, and possible risk factors of asthma is discussed. Although the influence of classical micronutrients such as selenium, copper, or zinc are well known, the effects of those such as iodine or manganese are only rarely mentioned. As a consequence, the aim of this paper is to demonstrate how disturbances in the levels of micronutrients and their supplementation might affect the course of asthma.
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Pinkerton JW, Kim RY, Brown AC, Rae BE, Donovan C, Mayall JR, Carroll OR, Khadem Ali M, Scott HA, Berthon BS, Baines KJ, Starkey MR, Kermani NZ, Guo YK, Robertson AAB, O'Neill LAJ, Adcock IM, Cooper MA, Gibson PG, Wood LG, Hansbro PM, Horvat JC. Relationship between type 2 cytokine and inflammasome responses in obesity-associated asthma. J Allergy Clin Immunol 2021; 149:1270-1280. [PMID: 34678326 DOI: 10.1016/j.jaci.2021.10.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 09/22/2021] [Accepted: 10/01/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Obesity is a risk factor for asthma, and obese asthmatic individuals are more likely to have severe, steroid-insensitive disease. How obesity affects the pathogenesis and severity of asthma is poorly understood. Roles for increased inflammasome-mediated neutrophilic responses, type 2 immunity, and eosinophilic inflammation have been described. OBJECTIVE We investigated how obesity affects the pathogenesis and severity of asthma and identified effective therapies for obesity-associated disease. METHODS We assessed associations between body mass index and inflammasome responses with type 2 (T2) immune responses in the sputum of 25 subjects with asthma. Functional roles for NLR family, pyrin domain-containing (NLRP) 3 inflammasome and T2 cytokine responses in driving key features of disease were examined in experimental high-fat diet-induced obesity and asthma. RESULTS Body mass index and inflammasome responses positively correlated with increased IL-5 and IL-13 expression as well as C-C chemokine receptor type 3 expression in the sputum of subjects with asthma. High-fat diet-induced obesity resulted in steroid-insensitive airway hyperresponsiveness in both the presence and absence of experimental asthma. High-fat diet-induced obesity was also associated with increased NLRP3 inflammasome responses and eosinophilic inflammation in airway tissue, but not lumen, in experimental asthma. Inhibition of NLRP3 inflammasome responses reduced steroid-insensitive airway hyperresponsiveness but had no effect on IL-5 or IL-13 responses in experimental asthma. Depletion of IL-5 and IL-13 reduced obesity-induced NLRP3 inflammasome responses and steroid-insensitive airway hyperresponsiveness in experimental asthma. CONCLUSION We found a relationship between T2 cytokine and NLRP3 inflammasome responses in obesity-associated asthma, highlighting the potential utility of T2 cytokine-targeted biologics and inflammasome inhibitors.
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Affiliation(s)
- James W Pinkerton
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia; Airway Disease Section, National Heart & Lung Institute, Imperial College London, London, United Kingdom
| | - Richard Y Kim
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia; Centre for Inflammation, Centenary Institute and University of Technology Sydney, School of Life Sciences, Faculty of Science, Sydney, Australia
| | - Alexandra C Brown
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Brittany E Rae
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Chantal Donovan
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia; Centre for Inflammation, Centenary Institute and University of Technology Sydney, School of Life Sciences, Faculty of Science, Sydney, Australia
| | - Jemma R Mayall
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Olivia R Carroll
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Md Khadem Ali
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia; Division of Pulmonary and Critical Care Medicine, Stanford University, Stanford, Calif
| | - Hayley A Scott
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Bronwyn S Berthon
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Katherine J Baines
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Malcolm R Starkey
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia; Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, Australia; Priority Research Centre GrowUpWell, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Nazanin Z Kermani
- Data Science Institute, Department of Computing, Imperial College London, London, United Kingdom
| | - Yi-Ke Guo
- Data Science Institute, Department of Computing, Imperial College London, London, United Kingdom
| | - Avril A B Robertson
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
| | - Luke A J O'Neill
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Ian M Adcock
- Airway Disease Section, National Heart & Lung Institute, Imperial College London, London, United Kingdom
| | - Matthew A Cooper
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia
| | - Peter G Gibson
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Lisa G Wood
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia
| | - Philip M Hansbro
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia; Centre for Inflammation, Centenary Institute and University of Technology Sydney, School of Life Sciences, Faculty of Science, Sydney, Australia
| | - Jay C Horvat
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and University of Newcastle, Newcastle, Australia.
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37
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Han F, Li S, Yang Y, Bai Z. Interleukin-6 promotes ferroptosis in bronchial epithelial cells by inducing reactive oxygen species-dependent lipid peroxidation and disrupting iron homeostasis. Bioengineered 2021; 12:5279-5288. [PMID: 34402724 PMCID: PMC8806540 DOI: 10.1080/21655979.2021.1964158] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Asthma occurs accompanied by the ferroptosis in bronchial epithelial cells, during which Interleukin-6 (IL-6) plays a key role. However, the associations between IL-6, ferroptosis and asthma have not been reported. Bronchial epithelial cells BEAS-2B cells were induced by different concentrations of IL-6 and cell viability was detected by MTT assay. The TBARS production rate was detected by corresponding kit. The expression of oxidative stress-related indexes was detected by ELISA. The Iron Assay Kits detected total iron levels and ferrous ion (Fe2+) levels. Labile iron pool assay was used to detect the cell unstable iron pool. The expression of ferroptosis-related proteins was detected by Western blot. To further examine the mechanism of action, ferroptosis inhibitor Ferrostatin 1 (Fer-1), antioxidant NAC, and the iron supplement Fe were added. We found that IL-6 decreased the activity, promoted lipid peroxidation, disrupted iron homeostasis of BEAS-2B cells, and induced iron death in bronchial epithelial BEAS-2B cells. However, pretreatment with Ferrostatin-1 (Fer-1) and antioxidant NAC partially reversed the effect of IL-6 on lipid peroxidation and ferroptosis in BEAS-2B cells, while Fe augmented the effect. Overall, IL-6 promotes ferroptosis in bronchial epithelial cells by inducing reactive oxygen species (ROS)-dependent lipid peroxidation and disrupting iron homeostasis.
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Affiliation(s)
- Fei Han
- The Key Laboratory Of Industrial Biotechnology, Ministry Of Education, School Of Biotechnology, jiangnan university, Jiangsu, China.,National Engineering Laboratory For Cereal Fermentation Technology, Jiangnan University, Jiangsu, China.,Jiangsu Provincial Research Center For Bioactive Product Processing Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Shijie Li
- The Key Laboratory Of Industrial Biotechnology, Ministry Of Education, School Of Biotechnology, jiangnan university, Jiangsu, China.,National Engineering Laboratory For Cereal Fermentation Technology, Jiangnan University, Jiangsu, China.,Jiangsu Provincial Research Center For Bioactive Product Processing Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Yankun Yang
- The Key Laboratory Of Industrial Biotechnology, Ministry Of Education, School Of Biotechnology, jiangnan university, Jiangsu, China.,National Engineering Laboratory For Cereal Fermentation Technology, Jiangnan University, Jiangsu, China.,Jiangsu Provincial Research Center For Bioactive Product Processing Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Zhonghu Bai
- The Key Laboratory Of Industrial Biotechnology, Ministry Of Education, School Of Biotechnology, jiangnan university, Jiangsu, China.,National Engineering Laboratory For Cereal Fermentation Technology, Jiangnan University, Jiangsu, China.,Jiangsu Provincial Research Center For Bioactive Product Processing Technology, Jiangnan University, Wuxi, Jiangsu, China
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38
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Mertens C, Marques O, Horvat NK, Simonetti M, Muckenthaler MU, Jung M. The Macrophage Iron Signature in Health and Disease. Int J Mol Sci 2021; 22:ijms22168457. [PMID: 34445160 PMCID: PMC8395084 DOI: 10.3390/ijms22168457] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 12/13/2022] Open
Abstract
Throughout life, macrophages are located in every tissue of the body, where their main roles are to phagocytose cellular debris and recycle aging red blood cells. In the tissue niche, they promote homeostasis through trophic, regulatory, and repair functions by responding to internal and external stimuli. This in turn polarizes macrophages into a broad spectrum of functional activation states, also reflected in their iron-regulated gene profile. The fast adaptation to the environment in which they are located helps to maintain tissue homeostasis under physiological conditions.
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Affiliation(s)
- Christina Mertens
- Department of Pediatric Hematology, Oncology and Immunology, University of Heidelberg, INF 350, 69120 Heidelberg, Germany; (O.M.); (N.K.H.); (M.U.M.)
- Correspondence: (C.M.); (M.J.); Tel.: +(49)-622-156-4582 (C.M.); +(49)-696-301-6931 (M.J.)
| | - Oriana Marques
- Department of Pediatric Hematology, Oncology and Immunology, University of Heidelberg, INF 350, 69120 Heidelberg, Germany; (O.M.); (N.K.H.); (M.U.M.)
- Molecular Medicine Partnership Unit, 69120 Heidelberg, Germany
| | - Natalie K. Horvat
- Department of Pediatric Hematology, Oncology and Immunology, University of Heidelberg, INF 350, 69120 Heidelberg, Germany; (O.M.); (N.K.H.); (M.U.M.)
- Molecular Medicine Partnership Unit, 69120 Heidelberg, Germany
- European Molecular Biology Laboratory (EMBL), Collaboration for Joint PhD Degree between EMBL and the Faculty of Biosciences, University of Heidelberg, 69117 Heidelberg, Germany
| | - Manuela Simonetti
- Institute of Pharmacology, Medical Faculty Heidelberg, Heidelberg University, INF 366, 69120 Heidelberg, Germany;
| | - Martina U. Muckenthaler
- Department of Pediatric Hematology, Oncology and Immunology, University of Heidelberg, INF 350, 69120 Heidelberg, Germany; (O.M.); (N.K.H.); (M.U.M.)
- Molecular Medicine Partnership Unit, 69120 Heidelberg, Germany
| | - Michaela Jung
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany
- Correspondence: (C.M.); (M.J.); Tel.: +(49)-622-156-4582 (C.M.); +(49)-696-301-6931 (M.J.)
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39
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Xing Q, You Y, Zhao X, Ji J, Yan H, Dong Y, Ren L, Ding Y, Hou S. iTRAQ-Based Proteomics Reveals Gu-Ben-Fang-Xiao Decoction Alleviates Airway Remodeling via Reducing Extracellular Matrix Deposition in a Murine Model of Chronic Remission Asthma. Front Pharmacol 2021; 12:588588. [PMID: 34194321 PMCID: PMC8237094 DOI: 10.3389/fphar.2021.588588] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 03/01/2021] [Indexed: 12/16/2022] Open
Abstract
Airway remodeling is a primary pathological feature of asthma. The current therapy for asthma mainly targets reducing inflammation but not particularly airway remodeling. Therefore, it is worthwhile to develop alternative and more effective therapies to attenuate remodeling. Gu-Ben-Fang-Xiao Decoction (GBFXD) has been used to effectively and safely treat asthma for decades. In this study, GBFXD regulated airway inflammation, collagen deposition, and the molecules relevant to airway remodeling such as Vimentin, α-SMA, hydroxyproline, and E-cadherin in chronic remission asthma (CRA) murine model. Proteomic analysis indicated that the overlapping differentially expressed proteins (DEPs) (Model/Control and GBFXD/Model) were mainly collagens and laminins, which were extracellular matrix (ECM) proteins. In addition, the KEGG analysis showed that GBFXD could regulate pathways related to airway remodeling including ECM-receptor interactions, focal adhesion, and the PI3K/AKT signaling pathway, which were the top three significantly enriched pathways containing the most DEPs for both Model/Control and GBFXD/Model. Further validation research showed that GBFXD regulated reticulon-4 (RTN4) and suppressed the activation of the PI3K/AKT pathway to alleviate ECM proteins deposition. In conclusion, our findings indicate that GBFXD possibly regulate the PI3K/AKT pathway via RTN4 to improve airway remodeling, which provides a new insight into the molecular mechanism of GBFXD for the treatment of CRA.
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Affiliation(s)
- Qiongqiong Xing
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Pediatric Institution of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Pediatric Respiratory Disease, Nanjing, China
| | - Yannan You
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Pediatric Institution of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Pediatric Respiratory Disease, Nanjing, China
| | - Xia Zhao
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Pediatric Institution of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Pediatric Respiratory Disease, Nanjing, China
| | - Jianjian Ji
- Pediatric Institution of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Pediatric Respiratory Disease, Nanjing, China
| | - Hua Yan
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Pediatric Institution of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Pediatric Respiratory Disease, Nanjing, China
| | - Yingmei Dong
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Pediatric Institution of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Pediatric Respiratory Disease, Nanjing, China
| | - Lishun Ren
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Pediatric Institution of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Pediatric Respiratory Disease, Nanjing, China
| | - Yuanyuan Ding
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Pediatric Institution of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Pediatric Respiratory Disease, Nanjing, China
| | - Shuting Hou
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Pediatric Institution of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Pediatric Respiratory Disease, Nanjing, China
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40
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Brown AC, Horvat JC. Casting Iron in the Pathogenesis of Fibrotic Lung Disease. Am J Respir Cell Mol Biol 2021; 65:130-131. [PMID: 33945773 PMCID: PMC8399580 DOI: 10.1165/rcmb.2021-0135ed] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Alexandra C Brown
- Priority Research Centre for Healthy Lungs The University of Newcastle and Hunter Medical Research Institute Newcastle, New South Wales, Australia
| | - Jay C Horvat
- Priority Research Centre for Healthy Lungs The University of Newcastle and Hunter Medical Research Institute Newcastle, New South Wales, Australia
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41
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Nutritional immunity: the impact of metals on lung immune cells and the airway microbiome during chronic respiratory disease. Respir Res 2021; 22:133. [PMID: 33926483 PMCID: PMC8082489 DOI: 10.1186/s12931-021-01722-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 04/15/2021] [Indexed: 12/15/2022] Open
Abstract
Nutritional immunity is the sequestration of bioavailable trace metals such as iron, zinc and copper by the host to limit pathogenicity by invading microorganisms. As one of the most conserved activities of the innate immune system, limiting the availability of free trace metals by cells of the immune system serves not only to conceal these vital nutrients from invading bacteria but also operates to tightly regulate host immune cell responses and function. In the setting of chronic lung disease, the regulation of trace metals by the host is often disrupted, leading to the altered availability of these nutrients to commensal and invading opportunistic pathogenic microbes. Similarly, alterations in the uptake, secretion, turnover and redox activity of these vitally important metals has significant repercussions for immune cell function including the response to and resolution of infection. This review will discuss the intricate role of nutritional immunity in host immune cells of the lung and how changes in this fundamental process as a result of chronic lung disease may alter the airway microbiome, disease progression and the response to infection.
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42
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Alemao CA, Budden KF, Gomez HM, Rehman SF, Marshall JE, Shukla SD, Donovan C, Forster SC, Yang IA, Keely S, Mann ER, El Omar EM, Belz GT, Hansbro PM. Impact of diet and the bacterial microbiome on the mucous barrier and immune disorders. Allergy 2021; 76:714-734. [PMID: 32762040 DOI: 10.1111/all.14548] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 07/10/2020] [Accepted: 07/30/2020] [Indexed: 12/11/2022]
Abstract
The prevalence of chronic immune and metabolic disorders is increasing rapidly. In particular, inflammatory bowel diseases, obesity, diabetes, asthma and chronic obstructive pulmonary disease have become major healthcare and economic burdens worldwide. Recent advances in microbiome research have led to significant discoveries of associative links between alterations in the microbiome and health, as well as these chronic supposedly noncommunicable, immune/metabolic disorders. Importantly, the interplay between diet, microbiome and the mucous barrier in these diseases has gained significant attention. Diet modulates the mucous barrier via alterations in gut microbiota, resulting in either disease onset/exacerbation due to a "poor" diet or protection against disease with a "healthy" diet. In addition, many mucosa-associated disorders possess a specific gut microbiome fingerprint associated with the composition of the mucous barrier, which is further influenced by host-microbiome and inter-microbial interactions, dietary choices, microbe immigration and antimicrobials. Our review focuses on the interactions of diet (macronutrients and micronutrients), gut microbiota and mucous barriers (gastrointestinal and respiratory tract) and their importance in the onset and/or progression of major immune/metabolic disorders. We also highlight the key mechanisms that could be targeted therapeutically to prevent and/or treat these disorders.
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Affiliation(s)
- Charlotte A. Alemao
- Priority Research Centre for Healthy Lungs Hunter Medical Research Institute New Lambton, Newcastle NSW Australia
- The University of Newcastle Newcastle NSW Australia
| | - Kurtis F. Budden
- Priority Research Centre for Healthy Lungs Hunter Medical Research Institute New Lambton, Newcastle NSW Australia
- The University of Newcastle Newcastle NSW Australia
| | - Henry M. Gomez
- Priority Research Centre for Healthy Lungs Hunter Medical Research Institute New Lambton, Newcastle NSW Australia
- The University of Newcastle Newcastle NSW Australia
| | - Saima F. Rehman
- Priority Research Centre for Healthy Lungs Hunter Medical Research Institute New Lambton, Newcastle NSW Australia
- The University of Newcastle Newcastle NSW Australia
| | - Jacqueline E. Marshall
- Faculty of Science Centre for Inflammation Centenary Institute University of Technology Sydney Sydney NSW Australia
| | - Shakti D. Shukla
- Priority Research Centre for Healthy Lungs Hunter Medical Research Institute New Lambton, Newcastle NSW Australia
- The University of Newcastle Newcastle NSW Australia
| | - Chantal Donovan
- Faculty of Science Centre for Inflammation Centenary Institute University of Technology Sydney Sydney NSW Australia
| | - Samuel C. Forster
- Department of Molecular and Translational Sciences Hudson Institute of Medical Research Centre for Innate Immunity and Infectious Diseases Monash University Clayton VIC Australia
| | - Ian A. Yang
- Thoracic Program The Prince Charles Hospital Metro North Hospital and Health Service Brisbane QLD Australia
- Faculty of Medicine UQ Thoracic Research Centre The University of Queensland Brisbane QLD Australia
| | - Simon Keely
- Hunter Medical Research Institute Priority Research Centre for Digestive Health and Neurogastroenterology University of Newcastle New Lambton Heights NSW Australia
| | - Elizabeth R. Mann
- Lydia Becker Institute of Immunology and Inflammation University of Manchester Manchester UK
- Faculty of Biology Medicine and Health Manchester Collaborative Centre for Inflammation Research Manchester Academic Health Science Centre University of Manchester Manchester UK
| | - Emad M. El Omar
- St George & Sutherland Clinical School Microbiome Research Centre University of New South Wales Sydney NSW Australia
| | - Gabrielle T. Belz
- Diamantina Institute University of Queensland Woolloongabba QLD Australia
- Department of Medical Biology Walter and Eliza Hall Institute of Medical Research University of Melbourne Parkville VIC Australia
| | - Philip M. Hansbro
- Priority Research Centre for Healthy Lungs Hunter Medical Research Institute New Lambton, Newcastle NSW Australia
- The University of Newcastle Newcastle NSW Australia
- Faculty of Science Centre for Inflammation Centenary Institute University of Technology Sydney Sydney NSW Australia
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