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Ascher K, Shafazand S. Dyspnea and Quality of Life Improvements with Management of Comorbid Obstructive Sleep Apnea in Chronic Lung Disease. Sleep Med Clin 2024; 19:371-378. [PMID: 38692759 DOI: 10.1016/j.jsmc.2024.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
Obstructive sleep apnea (OSA) has emerged as a significant and prevalent comorbidity associated with chronic lung diseases, including chronic obstructive pulmonary disease, asthma, and interstitial lung diseases. These overlap syndromes are associated with worse patient-reported outcomes (sleep quality, quality of life measures, mental health) than each condition independently. Observational studies suggest that patients with overlap syndrome who are adherent to positive airway pressure therapy report improved quality of life, sleep quality, depression, and daytime symptoms. Screening for and management of OSA in patients with overlap syndrome should emphasize the interconnected nature of these 2 conditions and the positive impact that OSA management can have on patients' well-being and overall health.
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Affiliation(s)
- Kori Ascher
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of Miami, Miller School of Medicine
| | - Shirin Shafazand
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of Miami, Miller School of Medicine.
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2
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Mallek NM, Martin EM, Dailey LA, McCullough SD. Liquid application dosing alters the physiology of air-liquid interface (ALI) primary human bronchial epithelial cell/lung fibroblast co-cultures and in vitro testing relevant endpoints. FRONTIERS IN TOXICOLOGY 2024; 5:1264331. [PMID: 38464699 PMCID: PMC10922929 DOI: 10.3389/ftox.2023.1264331] [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: 07/20/2023] [Accepted: 12/14/2023] [Indexed: 03/12/2024] Open
Abstract
Differentiated primary human bronchial epithelial cell (dpHBEC) cultures grown under air-liquid interface (ALI) conditions exhibit key features of the human respiratory tract and are thus critical for respiratory research as well as efficacy and toxicity testing of inhaled substances (e.g., consumer products, industrial chemicals, and pharmaceuticals). Many inhalable substances (e.g., particles, aerosols, hydrophobic substances, reactive substances) have physiochemical properties that challenge their evaluation under ALI conditions in vitro. Evaluation of the effects of these methodologically challenging chemicals (MCCs) in vitro is typically conducted by "liquid application," involving the direct application of a solution containing the test substance to the apical, air-exposed surface of dpHBEC-ALI cultures. We report that the application of liquid to the apical surface of a dpHBEC-ALI co-culture model results in significant reprogramming of the dpHBEC transcriptome and biological pathway activity, alternative regulation of cellular signaling pathways, increased secretion of pro-inflammatory cytokines and growth factors, and decreased epithelial barrier integrity. Given the prevalence of liquid application in the delivery of test substances to ALI systems, understanding its effects provides critical infrastructure for the use of in vitro systems in respiratory research as well as in the safety and efficacy testing of inhalable substances.
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Affiliation(s)
- Nicholas M. Mallek
- Curriculum in Toxicology and Environmental Medicine, University of North Carolina, Chapel Hill, NC, United States
| | - Elizabeth M. Martin
- Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Durham, NC, United States
| | - Lisa A. Dailey
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, United States Environmental Protection Agency, Chapel Hill, NC, United States
| | - Shaun D. McCullough
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, United States Environmental Protection Agency, Chapel Hill, NC, United States
- Exposure and Protection, RTI International, Durham, NC, United States
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3
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Morris DR, Qu Y, Jones-Hall YL, Liu T, Ivanciuc T, Garofalo RP, Casola A. Hypoxia-inducible-factors differentially contribute to clinical disease and the control of viral replication during RSV infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.15.553422. [PMID: 37645750 PMCID: PMC10461990 DOI: 10.1101/2023.08.15.553422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Hypoxia-inducible-factors (HIF) are transcription factors that regulate cellular adaptation to hypoxic conditions, enabling cells to survive in low-oxygen environments. Viruses have evolved to stabilize this pathway to promote successful viral infection, therefore modulation of HIFs could represent a novel antiviral strategy. In previous in vitro studies, we found that respiratory syncytial virus (RSV), a leading cause of respiratory illness, stabilizes HIFs under normoxic conditions, with inhibition of HIF-1α resulting in reduced viral replication. Despite several HIF modulating compounds being tested/approved for use in other non-infectious models, little is known about their efficacy against respiratory viruses using relevant animal models. This study aimed to characterize the disease modulating properties and antiviral potential of anti-HIF-1α (PX478) and anti-HIF-2α (PT2385) in RSV-infected BALB/c mice. We found that inhibition of HIF-1α worsen clinical disease parameters, while simultaneously improving airway function. Additionally, anti-HIF-1α results in significantly reduced viral titer at early and peak time points of RSV replication, followed by a loss in viral clearance when given every day, but not every-other-day. In contrast, inhibition of HIF-2α was associated with improved clinical parameters, with no changes in airway function, and amelioration of interstitial pneumonia. Furthermore, anti-HIF-2α reduced early and peak lung viral replication, with no impairment of viral clearance. Analysis of lung cells found significant modification in the T cell compartment that correlated with changes in lung pathology and viral titers in response to each HIF inhibitor administration. These data underscore the complex role of HIFs in RSV infection and highlight the need for careful therapeutic consideration.
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Affiliation(s)
- Dorothea R. Morris
- Department of Microbiology & Immunology, The University of Texas Medical Branch, Galveston, TX, USA
- School of Population & Public Health, The University of Texas Medical Branch, Galveston, TX, USA
- Department of Pediatrics, The University of Texas Medical Branch, Galveston, TX, USA
| | - Yue Qu
- Department of Pediatrics, The University of Texas Medical Branch, Galveston, TX, USA
| | - Yava L. Jones-Hall
- School of Veterinary Medicine and Biomedical Science, Texas A&M University, College Station, TX, USA
| | - Tianshuang Liu
- Department of Pediatrics, The University of Texas Medical Branch, Galveston, TX, USA
| | - Teodora Ivanciuc
- Department of Pediatrics, The University of Texas Medical Branch, Galveston, TX, USA
| | - Roberto P. Garofalo
- Department of Microbiology & Immunology, The University of Texas Medical Branch, Galveston, TX, USA
- Department of Pediatrics, The University of Texas Medical Branch, Galveston, TX, USA
| | - Antonella Casola
- Department of Microbiology & Immunology, The University of Texas Medical Branch, Galveston, TX, USA
- Department of Pediatrics, The University of Texas Medical Branch, Galveston, TX, USA
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4
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Pattnaik B, Negi V, Chaudhuri R, Desiraju K, Faizan MI, Akhtar A, Ansari MS, Shakir M, Gheware A, Prakash YS, Guleria R, Ghosh B, Agrawal A, Ahmad T. MiR-326-mediated overexpression of NFIB offsets TGF-β induced epithelial to mesenchymal transition and reverses lung fibrosis. Cell Mol Life Sci 2023; 80:357. [PMID: 37950757 PMCID: PMC11072886 DOI: 10.1007/s00018-023-05005-1] [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: 05/02/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 11/13/2023]
Abstract
Idiopathic Pulmonary Fibrosis (IPF) is a progressively fatal and incurable disease characterized by the loss of alveolar structures, increased epithelial-mesenchymal transition (EMT), and aberrant tissue repair. In this study, we investigated the role of Nuclear Factor I-B (NFIB), a transcription factor critical for lung development and maturation, in IPF. Using both human lung tissue samples from patients with IPF, and a mouse model of lung fibrosis induced by bleomycin, we showed that there was a significant reduction of NFIB both in the lungs of patients and mice with IPF. Furthermore, our in vitro experiments using cultured human lung cells demonstrated that the loss of NFIB was associated with the induction of EMT by transforming growth factor beta (TGF-β). Knockdown of NFIB promoted EMT, while overexpression of NFIB suppressed EMT and attenuated the severity of bleomycin-induced lung fibrosis in mice. Mechanistically, we identified post-translational regulation of NFIB by miR-326, a miRNA with anti-fibrotic effects that is diminished in IPF. Specifically, we showed that miR-326 stabilized and increased the expression of NFIB through its 3'UTR target sites for Human antigen R (HuR). Moreover, treatment of mice with either NFIB plasmid or miR-326 reversed airway collagen deposition and fibrosis. In conclusion, our study emphasizes the critical role of NFIB in lung development and maturation, and its reduction in IPF leading to EMT and loss of alveolar structures. Our study highlights the potential of miR-326 as a therapeutic intervention for IPF. The schema shows the role of NFIB in maintaining the normal epithelial cell characteristics in the lungs and how its reduction leads to a shift towards mesenchymal cell-like features and pulmonary fibrosis. A In normal lungs, NFIB is expressed abundantly in the epithelial cells, which helps in maintaining their shape, cell polarity and adhesion molecules. However, when the lungs are exposed to factors that induce pulmonary fibrosis, such as bleomycin, or TGF-β, the epithelial cells undergo epithelial to mesenchymal transition (EMT), which leads to a decrease in NFIB. B The mesenchymal cells that arise from EMT appear as spindle-shaped with loss of cell junctions, increased cell migration, loss of polarity and expression of markers associated with mesenchymal cells/fibroblasts. C We designed a therapeutic approach that involves exogenous administration of NFIB in the form of overexpression plasmid or microRNA-326. This therapeutic approach decreases the mesenchymal cell phenotype and restores the epithelial cell phenotype, thus preventing the development or progression of pulmonary fibrosis.
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Affiliation(s)
- Bijay Pattnaik
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, 110007, India
- Department of Pulmonary, Critical Care & Sleep Medicine, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India
| | - Vinny Negi
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, 110007, India
| | - Rituparna Chaudhuri
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, 110007, India
| | - Koundinya Desiraju
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, 110007, India
| | - Md Imam Faizan
- Multidisciplinary Centre for Advanced Research & Studies, Jamia Millia Islamia, New Delhi, 110025, India
| | - Areej Akhtar
- Multidisciplinary Centre for Advanced Research & Studies, Jamia Millia Islamia, New Delhi, 110025, India
| | - Md Sufyan Ansari
- Multidisciplinary Centre for Advanced Research & Studies, Jamia Millia Islamia, New Delhi, 110025, India
| | - Md Shakir
- Multidisciplinary Centre for Advanced Research & Studies, Jamia Millia Islamia, New Delhi, 110025, India
| | - Atish Gheware
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, 110007, India
| | - Y S Prakash
- Departments of Anesthesiology, Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Randeep Guleria
- Department of Pulmonary, Critical Care & Sleep Medicine, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India
| | - Balaram Ghosh
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, 110007, India
| | - Anurag Agrawal
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, 110007, India.
- Trivedi School of Biosciences, Ashoka University, NH 44, Rajiv Gandhi Education City, Sonipat, Haryana, 131029, India.
| | - Tanveer Ahmad
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, 110007, India.
- Multidisciplinary Centre for Advanced Research & Studies, Jamia Millia Islamia, New Delhi, 110025, India.
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Huang W, Yu C, Wu H, Liang S, Kang J, Zhou Z, Liu A, Liu L. Cbx4 governs HIF-1α to involve in Th9 cell differentiation promoting asthma by its SUMO E3 ligase activity. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2023; 1870:119524. [PMID: 37348765 DOI: 10.1016/j.bbamcr.2023.119524] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 06/06/2023] [Accepted: 06/10/2023] [Indexed: 06/24/2023]
Abstract
The potential role of polycomb chromobox 4 (Cbx4), as a small ubiquitin-like ligase (SUMO) E3 ligase, in the development and exacerbation of asthma remains unclear. Hypoxia inducible factor-1 (HIF-1) is a key transcription factor in the cellular response to hypoxia and contributes to the pathogenesis and progression of a range of diseases, including asthma. Here, we aimed to investigate the interaction of Cbx4 with Hypoxia inducible factor-1α (HIF-1α) and the potent mechanism of action in asthma progression. In present study, in vitro and ex vivo results demonstrated that Cbx4 interacts with HIF-1α protein through its SUMO E3 ligase activity and enhances the sumoylation, which increases HIF-1 transactivation through Cbx4 and promotes the differentiation of Th9 cells, then in turn promotes the process of asthma. Treatment of inhibitors targeting SUMO E3 ligase activity of Cbx4 or HIF-1α can effectively reduce HIF-1α activation and differentiation of Th9 cells, which further attenuates the asthma in mouse model. Current results collectively demonstrated Cbx4 can govern HIF-1α to involve in Th9 cell differentiation promoting asthma by its SUMO E3 ligase activity, providing a new direction for clinical treatment of asthma.
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Affiliation(s)
- Wufeng Huang
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China; People's Hospital of Huazhou City. Huazhou 525100, Guangdong Province, China.
| | - Changhui Yu
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Hong Wu
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Shixiu Liang
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Jing Kang
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Zili Zhou
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Aihua Liu
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Laiyu Liu
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China.
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Hencz A, Magony A, Thomas C, Kovacs K, Szilagyi G, Pal J, Sik A. Mild hypoxia-induced structural and functional changes of the hippocampal network. Front Cell Neurosci 2023; 17:1277375. [PMID: 37841285 PMCID: PMC10576450 DOI: 10.3389/fncel.2023.1277375] [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: 08/14/2023] [Accepted: 09/15/2023] [Indexed: 10/17/2023] Open
Abstract
Hypoxia causes structural and functional changes in several brain regions, including the oxygen-concentration-sensitive hippocampus. We investigated the consequences of mild short-term hypoxia on rat hippocampus in vivo. The hypoxic group was treated with 16% O2 for 1 h, and the control group with 21% O2. Using a combination of Gallyas silver impregnation histochemistry revealing damaged neurons and interneuron-specific immunohistochemistry, we found that somatostatin-expressing inhibitory neurons in the hilus were injured. We used 32-channel silicon probe arrays to record network oscillations and unit activity from the hippocampal layers under anaesthesia. There were no changes in the frequency power of slow, theta, beta, or gamma bands, but we found a significant increase in the frequency of slow oscillation (2.1-2.2 Hz) at 16% O2 compared to 21% O2. In the hilus region, the firing frequency of unidentified interneurons decreased. In the CA3 region, the firing frequency of some unidentified interneurons decreased while the activity of other interneurons increased. The activity of pyramidal cells increased both in the CA1 and CA3 regions. In addition, the regularity of CA1, CA3 pyramidal cells' and CA3 type II and hilar interneuron activity has significantly changed in hypoxic conditions. In summary, a low O2 environment caused profound changes in the state of hippocampal excitatory and inhibitory neurons and network activity, indicating potential changes in information processing caused by mild short-term hypoxia.
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Affiliation(s)
- Alexandra Hencz
- Institute of Physiology, Medical School, University of Pecs, Pecs, Hungary
| | - Andor Magony
- Institute of Physiology, Medical School, University of Pecs, Pecs, Hungary
- Institute of Transdisciplinary Discoveries, Medical School, University of Pecs, Pecs, Hungary
| | - Chloe Thomas
- Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Krisztina Kovacs
- Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Gabor Szilagyi
- Institute of Biochemistry and Medical Chemistry, Medical School, University of Pecs, Pecs, Hungary
| | - Jozsef Pal
- Institute of Physiology, Medical School, University of Pecs, Pecs, Hungary
| | - Attila Sik
- Institute of Physiology, Medical School, University of Pecs, Pecs, Hungary
- Institute of Transdisciplinary Discoveries, Medical School, University of Pecs, Pecs, Hungary
- Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
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7
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Bao C, Gu L, Wang S, Zou K, Zhang Z, Jiang L, Chen L, Fang H. Priority index for asthma (PIA): In silico discovery of shared and distinct drug targets for adult- and childhood-onset disease. Comput Biol Med 2023; 162:107095. [PMID: 37285660 DOI: 10.1016/j.compbiomed.2023.107095] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/30/2023] [Accepted: 05/27/2023] [Indexed: 06/09/2023]
Abstract
Asthma is a chronic disease that is caused by a combination of genetic risks and environmental triggers and can affect both adults and children. Genome-wide association studies have revealed partly distinct genetic architectures for its two age-of-onset subtypes (namely, adult-onset and childhood-onset). We reason that identifying shared and distinct drug targets between these subtypes may inform the development of subtype-specific therapeutic strategies. In attempting this, we here introduce Priority Index for Asthma or PIA, a genetics-led and network-driven drug target prioritisation tool for asthma. We demonstrate the validity of the tool in improving drug target prioritisation for asthma compared to the status quo methods, as well as in capturing the underlying etiology and existing therapeutics for the disease. We also illustrate how PIA can be used to prioritise drug targets for adult- and childhood-onset asthma, as well as to identify shared and distinct pathway crosstalk genes. Shared crosstalk genes are mostly involved in JAK-STAT signaling, with clinical evidence supporting that targeting this pathway may be a promising drug repurposing opportunity for both subtypes. Crosstalk genes specific to childhood-onset asthma are enriched for PI3K-AKT-mTOR signaling, and we identify genes that are already targeted by licensed medications as repurposed drug candidates for this subtype. We make all our results accessible and reproducible at http://www.genetictargets.com/PIA. Collectively, our study has significant implications for asthma computational medicine research and can guide the future development of subtype-specific therapeutic strategies for the disease.
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Affiliation(s)
- Chaohui Bao
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Leyao Gu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Faculty of Medical Laboratory Science, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shan Wang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kexin Zou
- School of Life Sciences, Central South University, Hunan, China
| | - Zhiqiang Zhang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Lulu Jiang
- Translational Health Sciences, University of Bristol, Bristol, UK
| | - Liye Chen
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Hai Fang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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8
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Islam R, Dash D, Singh R. An antioxidant ameliorates allergic airway inflammation by inhibiting HDAC 1 via HIF-1α/VEGF axis suppression in mice. Sci Rep 2023; 13:9637. [PMID: 37316684 DOI: 10.1038/s41598-023-36678-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 06/08/2023] [Indexed: 06/16/2023] Open
Abstract
Histone deacetylase inhibitors (HDACi) are novel class of drugs as they are involved in post translational modification of several proteins involved in signaling pathways related to asthma. HDACi have been reported to elicit protective effects on asthma but the signaling pathways associated with it have not been investigated much. Recently, we have demonstrated that intranasal administrations of Pan-HDAC inhibitors, sodium butyrate and curcumin, which have effectively reduced asthma severity via HDAC1 inhibition in Ovalbumin induced mouse model. Present study aimed to investigate possible pathways by which curcumin and sodium butyrate may minimize asthma pathogenesis via HDAC 1 inhibition. Balb/c mice were exposed (sensitized and challenged) with Ovalbumin to establish allergic asthma model followed by pretreatment of curcumin (5 mg/kg) and sodium butyrate (50 mg/kg) through intranasal route. Effects of curcumin and sodium butyrate on HIF-1α/VEGF signaling through activation of PI3K/Akt axis has been investigated using protein expressions followed by chromatin immunoprecipitation of BCL2 and CCL2 against HDAC1. Molecular docking analysis was also performed to investigate effects of curcumin and butyrate on mucus hypersecretion, goblet cell hyperplasia and airway hyperresponsiveness. Augmented expressions of HDAC-1, HIF-1α, VEGF, p-Akt and p-PI3K were observed in asthmatic group which was suppressed in both the treatments. NRF-2 level was significantly restored by curcumin and butyrate treatments. Protein expressions of p-p38, IL-5 and mRNA expressions of GATA-3 were also reduced in curcumin and butyrate treatment groups. Our findings suggest that curcumin and sodium butyrate may attenuate airway inflammation via down regulation of p-Akt/p-PI3K/HIF-1α/VEGF axis.
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Affiliation(s)
- Ramiya Islam
- Department of Zoology, MMV, Banaras Hindu University, Varanasi, 221005, India
| | - D Dash
- Department of Biochemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Rashmi Singh
- Department of Biochemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India.
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9
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Sha JF, Xie QM, Chen N, Song SM, Ruan Y, Zhao CC, Liu Q, Shi RH, Jiang XQ, Fei GH, Wu HM. TLR2-hif1α-mediated glycolysis contributes to pyroptosis and oxidative stress in allergic airway inflammation. Free Radic Biol Med 2023; 200:102-116. [PMID: 36907255 DOI: 10.1016/j.freeradbiomed.2023.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 02/21/2023] [Accepted: 03/07/2023] [Indexed: 03/13/2023]
Abstract
As a pattern recognition receptor which activates innate immune system, toll-like receptor 2 (TLR2) has been reportedly mediates allergic airway inflammation (AAI), yet the underlying mechanism remains elusive. Here, in a murine AAI model, TLR2-/- mice showed decreased airway inflammation, pyroptosis and oxidative stress. RNA-sequencing revealed that allergen-induced hif1 signaling pathway and glycolysis were significantly downregulated when TLR2 was deficient, which were confirmed by lung protein immunoblots. Glycolysis inhibitor 2-Deoxy-d-glucose (2-DG) inhibited allergen-induced airway inflammation, pyroptosis, oxidative stress and glycolysis in wild type (WT) mice, while hif1α stabilizer ethyl 3,4-dihydroxybenzoate (EDHB) restored theses allergen-induced changes in TLR2-/- mice, indicating TLR2-hif1α-mediated glycolysis contributes to pyroptosis and oxidative stress in AAI. Moreover, upon allergen challenge, lung macrophages were highly activated in WT mice but were less activated in TLR2-/- mice, 2-DG replicated while EDHB reversed such effect of TLR2 deficiency on lung macrophages. Likewise, both in vivo and ex vivo WT alveolar macrophages (AMs) exhibited higher TLR2/hif1α expression, glycolysis and polarization activation in response to ovalbumin (OVA), which were all inhibited in TLR2-/- AMs, suggesting AMs activation and metabolic switch are dependent on TLR2. Finally, depletion of resident AMs in TLR2-/- mice abolished while transfer of TLR2-/- resident AMs to WT mice replicated the protective effect of TLR2 deficiency on AAI when administered before allergen challenge. Collectively, we suggested that loss of TLR2-hif1α-mediated glycolysis in resident AMs ameliorates allergic airway inflammation that inhibits pyroptosis and oxidative stress, therefore the TLR2-hif1α-glycolysis axis in resident AMs may be a novel therapeutic target for AAI.
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Affiliation(s)
- Jia-Feng Sha
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui, 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No.218, Hefei, Anhui, 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui, 230022, PR China
| | - Qiu-Meng Xie
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui, 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No.218, Hefei, Anhui, 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui, 230022, PR China
| | - Ning Chen
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui, 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No.218, Hefei, Anhui, 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui, 230022, PR China
| | - Si-Ming Song
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui, 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No.218, Hefei, Anhui, 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui, 230022, PR China
| | - Ya Ruan
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui, 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No.218, Hefei, Anhui, 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui, 230022, PR China
| | - Cui-Cui Zhao
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui, 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No.218, Hefei, Anhui, 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui, 230022, PR China
| | - Qian Liu
- Division of Life Sciences and Medicine, University of Science and Technology of China, Huang Shan Road 443, Hefei, Anhui, 230027, PR China
| | - Rong-Hua Shi
- Division of Life Sciences and Medicine, University of Science and Technology of China, Huang Shan Road 443, Hefei, Anhui, 230027, PR China
| | - Xu-Qin Jiang
- Division of Life Sciences and Medicine, University of Science and Technology of China, Huang Shan Road 443, Hefei, Anhui, 230027, PR China; Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of University of Science and Technology of China, Lujiang Road 17, Hefei, Anhui, 230001, PR China.
| | - Guang-He Fei
- Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui, 230022, PR China; Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui, 230022, PR China.
| | - Hui-Mei Wu
- Anhui Geriatric Institute, Department of Geriatric Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui, 230022, PR China; Key Laboratory of Geriatric Molecular Medicine of Anhui Province, Jixi Road No.218, Hefei, Anhui, 230022, PR China; Key Laboratory of Respiratory Disease Research and Medical Transformation of Anhui Province, Jixi Road 218, Hefei, Anhui, 230022, PR China.
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10
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Mallek NM, Martin EM, Dailey LA, McCullough SD. Liquid Application Dosing Alters the Physiology of Air-Liquid Interface Primary Bronchial Epithelial Cultures and In vitro Testing Relevant Endpoints. RESEARCH SQUARE 2023:rs.3.rs-2570280. [PMID: 36865279 PMCID: PMC9980280 DOI: 10.21203/rs.3.rs-2570280/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
Differentiated Primary human bronchial epithelial cell (dpHBEC) cultures grown under air-liquid interface (ALI) conditions exhibit key features of the human respiratory tract and are thus critical for respiratory research as well as efficacy and toxicity testing of inhaled substances (e.g., consumer products, industrial chemicals, and pharmaceuticals). Many inhalable substances (e.g., particles, aerosols, hydrophobic substances, reactive substances) have physiochemical properties that challenge their evaluation under ALI conditions in vitro. Evaluation of the effects of these methodologically challenging chemicals (MCCs) in vitro is typically conducted by "liquid application," involving the direct application of a solution containing the test substance to the apical, air-exposed surface of dpHBEC-ALI cultures. We report that the application of liquid to the apical surface of a dpHBEC-ALI co-culture model results in significant reprogramming of the dpHBEC transcriptome and biological pathway activity, alternative regulation of cellular signaling pathways, increased secretion of pro-inflammatory cytokines and growth factors, and decreased epithelial barrier integrity. Given the prevalence of liquid application in the delivery of test substances to ALI systems, understanding its effects provides critical infrastructure for the use of in vitro systems in respiratory research as well as in the safety and efficacy testing of inhalable substances.
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11
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Gonzalez-Uribe V, Martinez-Tenopala R, Osorio-Martínez A, Prieto-Gomez J, Kirsch AL, Alcocer-Arreguin CR, Mojica-Gonzalez ZS. Expression of HIF-1α in pediatric asthmatic patients. Multidiscip Respir Med 2023; 18:927. [PMID: 38155704 PMCID: PMC10715186 DOI: 10.4081/mrm.2023.927] [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: 07/17/2023] [Accepted: 11/02/2023] [Indexed: 12/30/2023] Open
Abstract
Background Several studies have suggested that HIF-1α regulates eosinophil activity and induces epithelial inflammation via NF-κB activation in the pathophysiology of asthma. The purpose of this study was to examine the expression of the transcription factors HIF-1α and nuclear HIF in mononuclear cells obtained from peripheral blood samples of healthy pediatric patients, asthmatic patients, and asthmatic exacerbations, regardless of disease severity. Methods HIF-1 levels were measured using immunocytochemistry in 133 patients aged 6 to 17 years in this crosssectional and comparative study. A microscope was used to examine glass slides, and positive cells were counted in four fields per slide using an image analyzer. Results HIF-1α and nuclear HIF levels were significantly higher in asthma patients and even higher in patients experiencing asthma attacks (p<0.0001, 95% CI). There was no significant difference in the percentage of HIF-1α expression between groups with intermittent asthma and those with mild persistent asthma, nor between patients with asthma and those experiencing asthma exacerbations. Conclusions When compared to healthy individuals, the expression of nuclear HIF and HIF-1α is increased in peripheral mononuclear cells in asthma patients and even more so in asthma exacerbations. This suggests that HIF-1α is important in the pathogenesis of this disease.
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Affiliation(s)
- Víctor Gonzalez-Uribe
- Pediatric Allergy and Clinical Immunology, Hospital Infantil de Mexico Federico Gomez, Mexico City
- Facultad Mexicana de Medicina, Universidad La Salle Mexico, Mexico City
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12
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Single-Cell RNA-Sequencing Reveals the Active Involvement of Macrophage Polarizations in Pulmonary Hypertension. DISEASE MARKERS 2022; 2022:5398157. [PMID: 36246557 PMCID: PMC9553540 DOI: 10.1155/2022/5398157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/24/2022] [Accepted: 08/02/2022] [Indexed: 11/17/2022]
Abstract
Background. Sustained hypoxia can trigger a progressive rise in pulmonary artery pressure and cause serious pulmonary diseases. Macrophages play important roles along the progression of pulmonary hypertension. However, the state of macrophage polarization during the early stage of pulmonary hypertension is unclear. Methods. Unlike traditional sequencing method, single-cell sequencing can accurately distinguish among cell types and better understand cell-to-cell relationships. In this study, we investigated the polarization of macrophages in pulmonary hypertension via single-cell RNA-sequencing in a mice hypoxia model, which was then validated in patients with pulmonary hypertension. Results. We identified that the intermittent exposure to hypoxic conditions could lead to the production of more M2-type macrophages than M1-type macrophages in a mouse model. Further validation analysis was performed by analyzing lung tissue of patients with pulmonary hypertension, revealing that the number of disease-associated M2 macrophages was substantially increased. Conclusions. In this study, the active anti-inflammatory response of macrophage involved in pulmonary hypertension has been identified, suggesting that intervention against the polarization of macrophages to the M2 type may be a potential way to reduce chronic pulmonary inflammation, pulmonary vascular remodeling, and artery pressure. Thus, investigation of macrophage polarization associated with hypoxia could help us better understand disease mechanism and craft effective prevention strategies and approaches.
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13
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Beneficial Influence of Exendin-4 on Specific Organs and Mechanisms Favourable for the Elderly with Concomitant Obstructive Lung Diseases. Brain Sci 2022; 12:brainsci12081090. [PMID: 36009152 PMCID: PMC9405576 DOI: 10.3390/brainsci12081090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/12/2022] [Accepted: 08/14/2022] [Indexed: 11/17/2022] Open
Abstract
Exendin-4 (Ex-4), better known in its synthetic form and used clinically as exenatide, currently applied in the treatment of diabetes, induces a beneficial impact on nerve cells, and shows promising effects in obstructive lung diseases. At an advanced age, the development of the neurodegenerative process of brain tissue is masked by numerous concomitant diseases. The initial latent phase of neurodegenerative disease results in occurrence of manifestations at an advanced stage. To protect the brain and to simultaneously ensure proper treatment of common coexisting conditions in late life, such as diabetes, chronic obstructive pulmonary disease, or asthma, a pleiotropic medication should be chosen. Molecular mechanisms of Ex-4 exert neuroprotective effects or lead to secondary neurogenesis. Additionally, Ex-4 plays an important role in anti-inflammatory actions which are necessary both in the case of asthma and Parkinson’s disease. Specific receptors in the lungs also reduce the secretion of surfactants, which decreases the risk of exacerbation in chronic obstructive lung disease. In a great number of patients suffering from diabetes, asthma, or chronic lung disease, there is a great potential for both treatment of the main condition and protection against brain neurodegeneration.
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14
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Sultonov D, Kim YH, Park H, Kim KS. Intermittent Hypoxia on the Attenuation of Induced Nasal Allergy and Allergic Asthma by MAPK Signaling Pathway Downregulation in a Mice Animal Model. Int J Mol Sci 2022; 23:ijms23169235. [PMID: 36012500 PMCID: PMC9408847 DOI: 10.3390/ijms23169235] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/12/2022] [Accepted: 08/15/2022] [Indexed: 11/16/2022] Open
Abstract
Intermittent hypoxia (IH) has been an issue of considerable research in recent years and triggers a bewildering array of both detrimental and beneficial effects in several physiological systems. However, the mechanisms leading to the effect are not yet clear. Consequently, we investigated the effects of IH on allergen-induced allergic asthma via the mitogen-activated protein kinase (MAPK) signaling pathway. Forty BALB/c mice were dived into four groups. We evaluated the influence of IH on the cell signaling system of the airway during the allergen-induced challenge in an animal model, especially through the MAPK (mitogen-activated protein kinase) pathway. The protein concentrations of p-ERK/ERK, p-JNK/JNK, p-p38/p38, and pMEK/MEK were significantly reduced in the allergen-induced+IH group, compared to the allergen-induced group (p-value < 0.05 as considered statistically significant). The number of eosinophils, neutrophils, macrophages, and lymphocytes in the bronchoalveolar lavage fluid and Dp (Dermatophagoides pteronyssinus)-specific IgG2a and interleukins 4, 5, 13, and 17 were significantly reduced in the Dp+IH group, compared to the Dp group. These findings suggest that the MAPK pathway might be associated with the beneficial effect of IH on the attenuation of allergic response in an allergen-induced mouse model.
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Affiliation(s)
- Doston Sultonov
- Department of Otolaryngology Head & Neck Surgery, Inha University Hospital, Incheon 22332, Korea
- Inha Research Institute for Aerospace Medicine, Inha University College of Medicine, Incheon 22332, Korea
| | - Young Hyo Kim
- Kimyounghyo ENT Clinic, 161 Shin-song-ro, Yeonsu-gu, Incheon 22002, Korea
| | - Hyelim Park
- Inha Research Institute for Aerospace Medicine, Inha University College of Medicine, Incheon 22332, Korea
- Correspondence: (H.P.); (K.-S.K.)
| | - Kyu-Sung Kim
- Department of Otolaryngology Head & Neck Surgery, Inha University Hospital, Incheon 22332, Korea
- Inha Research Institute for Aerospace Medicine, Inha University College of Medicine, Incheon 22332, Korea
- Correspondence: (H.P.); (K.-S.K.)
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15
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Zhou W, Yu T, Hua Y, Hou Y, Ding Y, Nie H. Effects of Hypoxia on Respiratory Diseases: Perspective View of Epithelial Ion Transport. Am J Physiol Lung Cell Mol Physiol 2022; 323:L240-L250. [PMID: 35819839 DOI: 10.1152/ajplung.00065.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The balance of gas exchange and lung ventilation is essential for the maintenance of body homeostasis. There are many ion channels and transporters in respiratory epithelial cells, including epithelial sodium channel, Na,K-ATPase, cystic fibrosis transmembrane conductance regulator, and some transporters. These ion channels/transporters maintain the capacity of liquid layer on the surface of respiratory epithelial cells, and provide an immune barrier for the respiratory system to clear off foreign pathogens. However, in some harmful external environment and/or pathological conditions, the respiratory epithelium is prone to hypoxia, which would destroy the ion transport function of the epithelium and unbalance the homeostasis of internal environment, triggering a series of pathological reactions. Many respiratory diseases associated with hypoxia manifest an increased expression of hypoxia-inducible factor-1, which mediates the integrity of the epithelial barrier and affects epithelial ion transport function. It is important to study the relationship between hypoxia and ion transport function, whereas the mechanism of hypoxia-induced ion transport dysfunction in respiratory diseases is not clear. This review focuses on the relationship of hypoxia and respiratory diseases, as well as dysfunction of ion transport and tight junctions in respiratory epithelial cells under hypoxia.
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Affiliation(s)
- Wei Zhou
- Department of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, China
| | - Tong Yu
- Department of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, China
| | - Yu Hua
- Department of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, China
| | - Yapeng Hou
- Department of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, China
| | - Yan Ding
- Department of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, China
| | - Hongguang Nie
- Department of Stem Cells and Regenerative Medicine, College of Basic Medical Science, China Medical University, Shenyang, China
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16
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Wu M, Liang Y, Zhang X. Changes in Pulmonary Microenvironment Aids Lung Metastasis of Breast Cancer. Front Oncol 2022; 12:860932. [PMID: 35719975 PMCID: PMC9204317 DOI: 10.3389/fonc.2022.860932] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 04/25/2022] [Indexed: 11/13/2022] Open
Abstract
Breast cancer has become the most common malignant disease in the world according to the International Agency for Research on Cancer (IARC), and the most critical cause of death is distant metastasis. The lung is the extremely common visceral site for breast cancer metastasis. Lung metastasis of breast cancer is not only dependent on the invasive ability of the tumor itself, but also closely relates to the pulmonary microenvironment. In the progression of breast cancer, the formation of specific microenvironment in lungs can provide suitable conditions for the metastasis of breast cancer. Pulmonary inflammatory response, angiogenesis, extracellular matrix remodeling, some chemotherapeutic agents and so on all play important roles in the formation of the pulmonary microenvironment. This review highlights recent findings regarding the alterations of pulmonary microenvironment in lung metastasis of breast cancer, with a focus on various cells and acellular components.
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Affiliation(s)
- Meimei Wu
- Clinical Experimental Center, Jiangmen Key Laboratory of Clinical Biobanks and Translational Research, Jiangmen Central Hospital, Jiangmen, China
| | - Yanfang Liang
- Department of Pathology, Dongguan Hospital Affiliated to Jinan University, Binhaiwan Central Hospital of Dongguan, Dongguan, China
| | - Xin Zhang
- Clinical Experimental Center, Jiangmen Key Laboratory of Clinical Biobanks and Translational Research, Jiangmen Central Hospital, Jiangmen, China.,Dongguan Key Laboratory of Medical Bioactive Molecular Developmental and Translational Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China.,Collaborative Innovation Center for Antitumor Active Substance Research and Development, Guangdong Medical University, Zhanjiang, China
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17
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Feng J, Tang Y, Yang Z, Bao B, Liu Y, Deng S, Li H, Li J, Wang J. Explore the Effect of Asthma Regulating HIF-1 Pathway on Sperm Quality Based on Rat Model. BIOMED RESEARCH INTERNATIONAL 2022; 2022:4194685. [PMID: 35620222 PMCID: PMC9129962 DOI: 10.1155/2022/4194685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 04/16/2022] [Indexed: 11/17/2022]
Abstract
This study is to verify the effect of asthma on sperm quality and explore its potential underlying mechanism. We randomly categorized the Sprague-Dawley (SD) rats into control (Group C) and asthma model (Group M) groups. Rats in the asthma model group were induced allergic asthma by intraperitoneal injection of ovalbumin solution. We evaluated the sperm motility and sperm concentration. The expression of the Interleukin-6 (IL6), phosphorylation-signal transducer and activator of transcription 3 (p-Stat3), and hypoxia-inducible factor-1α (HIF-1α) proteins and mRNAs in the testicular tissue was detected by western blotting and RT-qPCR. Compared with group C, sperm concentration and sperm motility in group M rats were significantly decreased (P < 0.05). Meanwhile, compared with group C, the expression levels of IL6, Stat3, and HIF-1α proteins and mRNAs in group M rats were significantly increased (P < 0.05). Asthma can regulate the HIF-1 signaling pathway, promoting the expression of IL6, Stat3, and HIF-1α protein and mRNAs, so as to promote sperm apoptosis and ultimately causing male infertility.
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Affiliation(s)
- Junlong Feng
- Beijing University of Chinese Medicine, Beijing 100029, China
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Yuan Tang
- Urology Andrology Center of Peking University First Hospital, Beijing 100034, China
| | - Zhen Yang
- Beijing University of Chinese Medicine, Beijing 100029, China
- Department of Andrology, Shunyi Hospital of Beijing Traditional Chinese Medicine Hospital, Beijing 101300, China
| | - Binghao Bao
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - Yichen Liu
- Beijing University of Chinese Medicine, Beijing 100029, China
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Sheng Deng
- Beijing University of Chinese Medicine, Beijing 100029, China
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Haisong Li
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Jiangbin Li
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Jisheng Wang
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
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18
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Farzan S, Coyle T, Coscia G, Rebaza A, Santiago M. Clinical Characteristics and Management Strategies for Adult Obese Asthma Patients. J Asthma Allergy 2022; 15:673-689. [PMID: 35611328 PMCID: PMC9124473 DOI: 10.2147/jaa.s285738] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/05/2022] [Indexed: 11/23/2022] Open
Abstract
The rates of asthma and obesity are increasing concurrently in the United States. Epidemiologic studies demonstrate that the incidence of asthma increases with obesity. Furthermore, obese individuals have asthma that is more severe, harder to control, and resistant to standard medications. In fact, specific asthma-obesity phenotypes have been identified. Various pathophysiologic mechanisms, including mechanical, inflammatory, metabolic and microbiome-associated, are at play in promulgating the obese-asthma phenotypes. While standard asthma medications, such as inhaled corticosteroids and biologics, are currently used to treat obese asthmatics, they may have limited effectiveness. Targeting the underlying aberrant processes, such as addressing steroid resistance, microbiome, metabolic and weight loss approaches, may be helpful.
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Affiliation(s)
- Sherry Farzan
- Division of Allergy & Immunology, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Great Neck, NY, USA
- Department of Pediatrics, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Queens, NY, USA
- Department of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Manhasett, NY, USA
- Institute of Health System Science, Feinstein Institutes for Medical Research, Northwell Health System, Manhasset, NY, USA
- Correspondence: Sherry Farzan, Division of Allergy & Immunology, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, 865 Northern Blvd, Suite 101, Great Neck, NY, 11021, USA, Tel +1 516-622-5070, Fax +1 516-622-5060, Email
| | - Tyrone Coyle
- Division of Allergy & Immunology, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Great Neck, NY, USA
- Department of Pediatrics, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Queens, NY, USA
- Department of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Manhasett, NY, USA
| | - Gina Coscia
- Division of Allergy & Immunology, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Great Neck, NY, USA
- Department of Pediatrics, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Queens, NY, USA
- Department of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Manhasett, NY, USA
| | - Andre Rebaza
- Department of Pediatrics, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Queens, NY, USA
- Division of Pediatric Pulmonology, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, New York, NY, USA
| | - Maria Santiago
- Department of Pediatrics, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, Queens, NY, USA
- Division of Pediatric Pulmonology, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Northwell Health System, New York, NY, USA
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Dual Effects of Hypoxia-Inducible Factors-1 Alpha in Bleomycin-Induced Pulmonary Fibrosis Treated by Human Umbilical Cord Mesenchymal Stem Cells. Stem Cells Int 2021; 2021:6658855. [PMID: 34868320 PMCID: PMC8642016 DOI: 10.1155/2021/6658855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 11/01/2021] [Accepted: 11/13/2021] [Indexed: 01/15/2023] Open
Abstract
Pulmonary fibrosis (PF) is a kind of lung disease characterized by scar formation and inflammation damage. Mesenchymal stem cells (MSCs) are considered a promising therapy because of multidirectional differentiation and immune regulation. Our research was designed for identifying the preventative defensive ability and therapeutic effect of human umbilical cord mesenchymal stem cells (HUCMSCs). HUCMSCs were administered before or after bleomycin injection in different groups of C57BL/6 mice. We calculated the survival time of mice, the lung coefficients, contents of hydroxyproline, and pathological scores. The expression levels of HIF-1α (hypoxia-inducible factor-1α), α-SMA (α-smooth muscle actin), γH2AFX (γH2A histone family, member X), ZO-1 (zonula occludens-1), ROS (reactive oxygen species) content, and proliferation ability of A549 cells were detected after treatment with bleomycin and HUCMSCs conditioned medium (HUCMSCs-CM), respectively, or together in vitro. In addition, we examined the secretome of HUCMSCs in regular and inflammatory stimulation conditions. Our results demonstrated that prophylactic HUCMSC administration before bleomycin-induced modeling process could significantly meliorate damage to pulmonary fibrosis. After the deletion of HIF-1α, damage markers in A549 cells were significantly reduced in therapeutic administration condition. However, it was the opposite in prophylactic administration condition. The results confirmed that HUCMSCs had available preventive effect on bleomycin-induced pulmonary fibrosis in vivo and in vitro. However, it may have a negative effect in therapeutic administration condition because of the dual effect of HIF-1α.
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Pref-1 induced lung fibroblast differentiation by hypoxia through integrin α5β1/ERK/AP-1 cascade. Eur J Pharmacol 2021; 909:174385. [PMID: 34331953 DOI: 10.1016/j.ejphar.2021.174385] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/15/2021] [Accepted: 07/23/2021] [Indexed: 11/20/2022]
Abstract
Chronic obstructive asthma is characterized by airway fibrosis. Hypoxia and connective tissue growth factor (CTGF) play important roles in airway fibrosis. Preadipocyte factor-1 (Pref-1) participates in adipocyte differentiation and liver fibrosis. Herein, we investigated the role of Pref-1 in airway fibrosis in chronic obstructive asthma. We found that Pref-1 was overexpressed in lung tissues from chronic obstructive asthma patients compared to normal subjects. Extracellular matrix proteins were inhibited by Pref-1 small interfering (si)RNA in airway fibroblasts from chronic obstructive asthma patients. Furthermore, ovalbumin induced prominent Pref-1 expression and fibronectin coexpression. Hypoxia induced Pref-1 upregulation and its release into medium of WI-38 cells. Hypoxia-induced CTGF expression was inhibited by Pref-1 siRNA. We also found that Pref-1-stimulated fibrotic protein expressions were reduced by ATN-161, curcumin, U0126, and c-Jun siRNA in WI-38. Furthermore, ATN161 inhibited Pref-1-induced ERK phosphorylation, and ITGA5 siRNA inhibited c-Jun phosphorylation. Moreover, expression of CTGF, Fibronectin, α-SMA, and ERK and c-Jun phosphorylation were all increased in fibroblasts from patients with chronic obstructive asthma. Taken together, these results suggest that Pref-1 participates in airway fibrosis and hypoxia-induced CTGF expression via the integrin receptor α5β1/ERK/AP-1 pathway.
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21
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Cheng WH, Chen CL, Chen JY, Lin CH, Chen BC. Hypoxia-induced preadipocyte factor 1 expression in human lung fibroblasts through ERK/PEA3/c-Jun pathway. Mol Med 2021; 27:69. [PMID: 34229599 PMCID: PMC8259210 DOI: 10.1186/s10020-021-00336-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/29/2021] [Indexed: 11/24/2022] Open
Abstract
Background Several studies have reported that hypoxia plays a pathological role in severe asthma and tissue fibrosis. Our previous study showed that hypoxia induces A disintegrin and metalloproteinase 17 (ADAM17) expression in human lung fibroblasts. Moreover, preadipocyte factor 1 (Pref-1) is cleaved by ADAM17, which participates in adipocyte differentiation. Furthermore, Pref1 overexpression is involved in tissue fibrosis including liver and heart. Extracellular signal-regulated kinase (ERK) could active downstram gene expression through polyoma enhancer activator 3 (PEA3) phosphorylation. Studies have demonstrated that PEA3 and activator protein 1 (AP-1) play crucial roles in lung fibrosis, and the Pref-1 promoter region contains PEA3 and AP-1 binding sites as predicted. However, the roles of ERK, PEA3, and AP-1 in hypoxia-stimulated Pref-1 expression in human lung fibroblasts remain unknown. Methods The protein expression in ovalbumin (OVA)-induced asthmatic mice was performed by immunohistochemistry and immunofluorescence. The protein expression or the mRNA level in human lung fibroblasts (WI-38) was detected by western blot or quantitative PCR. Small interfering (si) RNA was used to knockdown gene expression. The collaboration with PEA3 and c-Jun were determined by coimmunoprecipitation. Translocation of PEA3 from the cytosol to the nucleus was observed by immunocytochemistry. The binding ability of PEA3 and AP-1 to Pref-1 promoter was assessed by chromatin immunoprecipitation. Results Pref-1 and hypoxia-inducible factor 1α (HIF-1α) were expressed in the lung sections of OVA-treated mice. Colocalization of PEA3 and Fibronectin was detected in lung sections from OVA-treated mice. Futhermore, Hypoxia induced Pref1 protein upregulation and mRNA expression in human lung fibroblasts (WI38 cells). In 60 confluent WI-38 cells, hypoxia up-regulated HIF-1α and Pref-1 protein expression. Moreover, PEA3 small interfering (si) RNA decreased the expression of hypoxia-induced Pref1 in WI38 cells. Hypoxia induced PEA3 phosphorylation, translocation of PEA3 from the cytosol to the nucleus, PEA3 recruitment and AP-1 binding to the Pref1 promoter region, and PEA3-luciferase activity. Additionally, hypoxia induced c-Jun-PEA3 complex formation. U0126 (an ERK inhibitor), curcumin (an AP1 inhibitor) or c-Jun siRNA downregulated hypoxia-induced Pref-1 expression. Conclusions These results implied that ERK, PEA3, and AP1 participate in hypoxiainduced Pref1 expression in human lung fibroblasts.
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Affiliation(s)
- Wun-Hao Cheng
- Gradual Institute of Medical Sciences, College of Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan.,Division of Pulmonary Medicine, Department of Internal Medicine, School of Respiratory Therapy, Wan Fang Hospital, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan
| | - Chia-Ling Chen
- Division of Thoracic Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Jing-Yun Chen
- Gradual Institute of Medical Sciences, College of Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan
| | - Chien-Huang Lin
- Gradual Institute of Medical Sciences, College of Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan.
| | - Bing-Chang Chen
- Division of Pulmonary Medicine, Department of Internal Medicine, School of Respiratory Therapy, Wan Fang Hospital, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan. .,Division of Thoracic Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan. .,School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan.
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22
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Patel JC, Singh A, Tulswani R, Sharma YK, Khurana P, Ragumani S. Identification of VEGFA-centric temporal hypoxia-responsive dynamic cardiopulmonary network biomarkers. Life Sci 2021; 281:119718. [PMID: 34147483 DOI: 10.1016/j.lfs.2021.119718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/31/2021] [Accepted: 06/08/2021] [Indexed: 10/21/2022]
Abstract
AIMS Hypoxia, a pathophysiological condition, is profound in several cardiopulmonary diseases (CPD). Every individual's lethality to a hypoxia state differs in terms of hypoxia exposure time, dosage units and dependent on the individual's genetic makeup. Most of the proposed markers for CPD were generally aim to distinguish disease samples from normal samples. Although, as per the 2018 GOLD guidelines, clinically useful biomarkers for several cardio pulmonary disease patients in stable condition have yet to be identified. We attempt to address these key issues through the identification of Dynamic Network Biomarkers (DNB) to detect hypoxia induced early warning signals of CPD before the catastrophic deterioration. MATERIALS AND METHODS The human microvascular endothelial tissues microarray datasets (GSE11341) of lung and cardiac expose to hypoxia (1% O2) for 3, 24 and 48 h were retrieved from the public repository. The time dependent differentially expressed genes were subjected to tissue specificity and promoter analysis to filtrate the noise levels in the networks and to dissect the tissue specific hypoxia induced genes. These filtered out genes were used to construct the dynamic segmentation networks. The hypoxia induced dynamic differentially expressed genes were validated in the lung and heart tissues of male rats. These rats were exposed to hypobaric hypoxia (simulated altitude of 25,000 or PO2 - 282 mm of Hg) progressively for 3, 24 and 48 h. KEY FINDINGS To identify the temporal key genes regulated in hypoxia, we ranked the dominant genes based on their consolidated topological features from tissue specific networks, time dependent networks and dynamic networks. Overall topological ranking described VEGFA as a single node dynamic hub and strongly communicated with tissue specific genes to carry forward their tissue specific information. We named this type of VEGFAcentric dynamic networks as "V-DNBs". As a proof of principle, our methodology helped us to identify the V-DNBs specific for lung and cardiac tissues namely V-DNBL and V-DNBC respectively. SIGNIFICANCE Our experimental studies identified VEGFA, SLC2A3, ADM and ENO2 as the minimum and sufficient candidates of V-DNBL. The dynamic expression patterns could be readily exploited to capture the pre disease state of hypoxia induced pulmonary vascular remodelling. Whereas in V-DNBC the minimum and sufficient candidates are VEGFA, SCL2A3, ADM, NDRG1, ENO2 and BHLHE40. The time dependent single node expansion indicates V-DNBC could also be the pre disease state pathological hallmark for hypoxia-associated cardiovascular remodelling. The network cross-talk and expression pattern between V-DNBL and V-DNBC are completely distinct. On the other hand, the great clinical advantage of V-DNBs for pre disease predictions, a set of samples during the healthy condition should suffice. Future clinical studies might further shed light on the predictive power of V-DNBs as prognostic and diagnostic biomarkers for CPD.
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Affiliation(s)
- Jai Chand Patel
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, India
| | - Ajeet Singh
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, India
| | - Rajkumar Tulswani
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, India
| | - Yogendra Kumar Sharma
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, India
| | - Pankaj Khurana
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, India
| | - Sugadev Ragumani
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, India.
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23
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Application of Metabolomics in Pediatric Asthma: Prediction, Diagnosis and Personalized Treatment. Metabolites 2021; 11:metabo11040251. [PMID: 33919626 PMCID: PMC8072856 DOI: 10.3390/metabo11040251] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/07/2021] [Accepted: 04/15/2021] [Indexed: 12/16/2022] Open
Abstract
Asthma in children remains a significant public health challenge affecting 5–20% of children in Europe and is associated with increased morbidity and societal healthcare costs. The high variation in asthma incidence among countries may be attributed to differences in genetic susceptibility and environmental factors. This respiratory disorder is described as a heterogeneous syndrome of multiple clinical manifestations (phenotypes) with varying degrees of severity and airway hyper-responsiveness, which is based on patient symptoms, lung function and response to pharmacotherapy. However, an accurate diagnosis is often difficult due to diversities in clinical presentation. Therefore, identifying early diagnostic biomarkers and improving the monitoring of airway dysfunction and inflammatory through non-invasive methods are key goals in successful pediatric asthma management. Given that asthma is caused by the interaction between genes and environmental factors, an emerging approach, metabolomics—the systematic analysis of small molecules—can provide more insight into asthma pathophysiological mechanisms, enable the identification of early biomarkers and targeted personalized therapies, thus reducing disease burden and societal cost. The purpose of this review is to present evidence on the utility of metabolomics in pediatric asthma through the analysis of intermediate metabolites of biochemical pathways that involve carbohydrates, amino acids, lipids, organic acids and nucleotides and discuss their potential application in clinical practice. Also, current challenges on the integration of metabolomics in pediatric asthma management and needed next steps are critically discussed.
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24
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IL-13 Augments Histone Demethylase JMJD2B/KDM4B Expression Levels, Activity, and Nuclear Translocation in Airway Fibroblasts in Asthma. J Immunol Res 2021; 2021:6629844. [PMID: 33688506 PMCID: PMC7920726 DOI: 10.1155/2021/6629844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 02/08/2021] [Accepted: 02/12/2021] [Indexed: 01/10/2023] Open
Abstract
Purpose Asthma is one of the most common obstructive pulmonary diseases worldwide. Epigenetic alterations, including DNA methylation and histone modifications, have been reported to contribute to asthma pathogenesis. Since the inflammation mediator and remodeling trigger, IL-13, is known to play a central role in the pathophysiology of asthma, this study was aimed to identify novel IL-13-regulated epigenetic modifiers in asthma that may contribute to subepithelial fibrosis. Methods Publicly available transcriptomic datasets from Gene Expression Omnibus (GEO) were used to identify differentially expressed genes on an epigenetic level upon IL-13 exposure in lung fibroblasts. Bronchial fibroblasts isolated from healthy and asthmatic individuals were assessed for the gene and protein expression levels of the identified gene at baseline and upon IL-13 treatment using qRT-PCR and western blotting, respectively. Its subcellular localization and tissue distribution were examined in bronchial fibroblasts as well as bronchial biopsies by immunofluorescence and immunohistochemical analysis, respectively. Results Bioinformatic analysis revealed the differential expression of the histone demethylase JMJD2B/KDM4B, a well-known epigenetic modulator that leads to the demethylation of different lysine residues on histones, in IL-13-treated lung fibroblasts. The baseline expression levels of JMJD2B were higher in asthmatic fibroblasts and in bronchial biopsies in comparison to healthy ones. There was also an increase in JMJD2B activity as evidenced by the demethylation of its downstream target, H3K36me3. Furthermore, IL-13 stimulation induced JMJD2B expression and further demethylation of H3K36me3 in asthmatic fibroblasts. This was accompanied by increased translocation of JMJD2B into the nucleus. Conclusion This study highlights the novel pathological involvement of the histone demethylase JMJD2B/KDM4B in asthmatic airway fibroblasts that are regulated by IL-13. Clinical implications. Given that there is no single therapeutic medicine to effectively treat the various subtypes of asthma, this study provides promising insights into JMJD2B as a new therapeutic target that could potentially improve the treatment and management of asthma.
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25
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Gheware A, Panda L, Khanna K, Bhatraju NK, Jain V, Sagar S, Kumar M, Singh VP, Kannan S, Subramanian V, Mukerji M, Agrawal A, Prasher B. Adhatoda vasica rescues the hypoxia-dependent severe asthma symptoms and mitochondrial dysfunction. Am J Physiol Lung Cell Mol Physiol 2021; 320:L757-L769. [PMID: 33565386 DOI: 10.1152/ajplung.00511.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Severe asthma is a chronic airway disease that exhibits poor response to conventional asthma therapies. Growing evidence suggests that elevated hypoxia increases the severity of asthmatic inflammation among patients and in model systems. In this study, we elucidate the therapeutic effects and mechanistic basis of Adhatoda vasica (AV) aqueous extract on mouse models of acute allergic as well as severe asthma subtypes at physiological, histopathological, and molecular levels. Oral administration of AV extract attenuates the increased airway resistance and inflammation in acute allergic asthmatic mice and alleviates the molecular signatures of steroid (dexamethasone) resistance like IL-17A, KC (murine IL-8 homologue), and HIF-1α (hypoxia-inducible factor-1α) in severe asthmatic mice. AV inhibits HIF-1α levels through restoration of expression of its negative regulator-PHD2 (prolyl hydroxylase domain-2). Alleviation of hypoxic response mediated by AV is further confirmed in the acute and severe asthma model. AV reverses cellular hypoxia-induced mitochondrial dysfunction in human bronchial epithelial cells-evident from bioenergetic profiles and morphological analysis of mitochondria. In silico docking of AV constituents reveal higher negative binding affinity for C and O-glycosides for HIF-1α, IL-6, Janus kinase 1/3, TNF-α, and TGF-β-key players of hypoxia inflammation. This study for the first time provides a molecular basis of action and effect of AV whole extract that is widely used in Ayurveda practice for diverse respiratory ailments. Further, through its effect on hypoxia-induced mitochondrial dysfunction, the study highlights its potential to treat severe steroid-resistant asthma.
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Affiliation(s)
- Atish Gheware
- Genomics and Molecular Medicine, Council of Scientific and Industrial Research-Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, India.,CSIR's Ayurgenomics Unit, TRISUTRA (Translational Research and Innovative Science ThRough Ayurgenomics), CSIR-IGIB, Delhi, India.,Centre of Excellence for Applied Development of Ayurveda, Prakriti and Genomics, CSIR-IGIB, Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Lipsa Panda
- Centre of Excellence for Translational Research in Asthma & Lung disease, CSIR-IGIB, Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Kritika Khanna
- Centre of Excellence for Translational Research in Asthma & Lung disease, CSIR-IGIB, Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Naveen Kumar Bhatraju
- Centre of Excellence for Translational Research in Asthma & Lung disease, CSIR-IGIB, Delhi, India
| | - Vaibhav Jain
- Centre of Excellence for Translational Research in Asthma & Lung disease, CSIR-IGIB, Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Shakti Sagar
- Centre of Excellence for Translational Research in Asthma & Lung disease, CSIR-IGIB, Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Manish Kumar
- Centre of Excellence for Translational Research in Asthma & Lung disease, CSIR-IGIB, Delhi, India
| | - Vijay Pal Singh
- Centre of Excellence for Translational Research in Asthma & Lung disease, CSIR-IGIB, Delhi, India
| | - Sadasivam Kannan
- Center for High Computing, CSIR-Central Leather Research Institute (CLRI), Chennai, India
| | - Venkatesan Subramanian
- Center for High Computing, CSIR-Central Leather Research Institute (CLRI), Chennai, India
| | - Mitali Mukerji
- Genomics and Molecular Medicine, Council of Scientific and Industrial Research-Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, India.,CSIR's Ayurgenomics Unit, TRISUTRA (Translational Research and Innovative Science ThRough Ayurgenomics), CSIR-IGIB, Delhi, India.,Centre of Excellence for Applied Development of Ayurveda, Prakriti and Genomics, CSIR-IGIB, Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Anurag Agrawal
- Centre of Excellence for Translational Research in Asthma & Lung disease, CSIR-IGIB, Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Bhavana Prasher
- Genomics and Molecular Medicine, Council of Scientific and Industrial Research-Institute of Genomics and Integrative Biology (CSIR-IGIB), Delhi, India.,CSIR's Ayurgenomics Unit, TRISUTRA (Translational Research and Innovative Science ThRough Ayurgenomics), CSIR-IGIB, Delhi, India.,Centre of Excellence for Applied Development of Ayurveda, Prakriti and Genomics, CSIR-IGIB, Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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26
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Helling BA, Sobreira DR, Hansen GT, Sakabe NJ, Luo K, Billstrand C, Laxman B, Nicolae RI, Nicolae DL, Bochkov YA, Gern JE, Nobrega MA, White SR, Ober C. Altered transcriptional and chromatin responses to rhinovirus in bronchial epithelial cells from adults with asthma. Commun Biol 2020; 3:678. [PMID: 33188283 PMCID: PMC7666152 DOI: 10.1038/s42003-020-01411-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 10/21/2020] [Indexed: 12/20/2022] Open
Abstract
There is a life-long relationship between rhinovirus (RV) infection and the development and clinical manifestations of asthma. In this study we demonstrate that cultured primary bronchial epithelial cells from adults with asthma (n = 9) show different transcriptional and chromatin responses to RV infection compared to those without asthma (n = 9). Both the number and magnitude of transcriptional and chromatin responses to RV were muted in cells from asthma cases compared to controls. Pathway analysis of the transcriptionally responsive genes revealed enrichments of apoptotic pathways in controls but inflammatory pathways in asthma cases. Using promoter capture Hi-C we tethered regions of RV-responsive chromatin to RV-responsive genes and showed enrichment of these regions and genes at asthma GWAS loci. Taken together, our studies indicate a delayed or prolonged inflammatory state in cells from asthma cases and highlight genes that may contribute to genetic risk for asthma.
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Affiliation(s)
- Britney A Helling
- Department of Human Genetics, University of Chicago, Chicago, IL, 60637, USA.
| | - Débora R Sobreira
- Department of Human Genetics, University of Chicago, Chicago, IL, 60637, USA
| | - Grace T Hansen
- Department of Human Genetics, University of Chicago, Chicago, IL, 60637, USA
| | - Noboru J Sakabe
- Department of Human Genetics, University of Chicago, Chicago, IL, 60637, USA
| | - Kaixuan Luo
- Department of Human Genetics, University of Chicago, Chicago, IL, 60637, USA
| | | | - Bharathi Laxman
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, Chicago, IL, 60637, USA
| | - Raluca I Nicolae
- Department of Human Genetics, University of Chicago, Chicago, IL, 60637, USA
| | - Dan L Nicolae
- Department of Statistics, University of Chicago, Chicago, IL, 60637, USA
| | - Yury A Bochkov
- Department of Pediatrics, University of Wisconsin, School of Medicine and Public Health, Madison, WI, 53706, USA
| | - James E Gern
- Department of Pediatrics, University of Wisconsin, School of Medicine and Public Health, Madison, WI, 53706, USA
| | - Marcelo A Nobrega
- Department of Human Genetics, University of Chicago, Chicago, IL, 60637, USA
| | - Steven R White
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, Chicago, IL, 60637, USA
| | - Carole Ober
- Department of Human Genetics, University of Chicago, Chicago, IL, 60637, USA
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27
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Su XM, Ren Y, Li ML, Bai SY, Yu N, Kong LF, Kang J. Proteomics profiling asthma induced-lysine acetylation. EXCLI JOURNAL 2020; 19:734-744. [PMID: 32636726 PMCID: PMC7332788 DOI: 10.17179/excli2019-1508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/25/2020] [Indexed: 12/24/2022]
Abstract
Asthma is a chronic inflammatory disease that has been extensively studied for many years. However, finding a complete cure remains a significant challenge. Protein acetylation, especially histone acetylation, plays a significant role in the anti-asthma process. Histone deacetylation inhibitors (HDACi) have been shown to have a curative effect on asthma in clinical practice. An asthmatic mouse model was created by ovalbumin induction. Proteome and acetylproteome analysis were performed on lung tissues. HDACi were tested in the asthmatic mice. A total of 5346 proteins and 581 acetylation sites were identified, among which 154 proteins and 68 acetylation peptides were significantly altered by asthma. Many activated and deactivated processes, pathways, and protein groups were identified through bioinformatics analysis. Sequence motif preference analysis gave rise to a novel Kac-related core histone region, -KAXXK-, which was postulated as a key regulatory unit of histone acetylation. Asthma involves a variety of proteome dynamics and is controlled by protein lysine acetylation through the core motif -KAXXK-. These findings provide novel avenues to target and treat asthma.
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Affiliation(s)
- Xin-Ming Su
- Department of Pulmonary and Critical Care Medicine, Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China
| | - Yuan Ren
- Department of Pulmonary and Critical Care Medicine, Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China
| | - Meng-Lu Li
- Department of Pulmonary and Critical Care Medicine, Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China
| | - Shi-Yao Bai
- Department of Pulmonary and Critical Care Medicine, Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China
| | - Na Yu
- Department of Pulmonary and Critical Care Medicine, Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China
| | - Ling-Fei Kong
- Department of Pulmonary and Critical Care Medicine, Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China
| | - Jian Kang
- Department of Pulmonary and Critical Care Medicine, Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China
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28
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Winnica D, Corey C, Mullett S, Reynolds M, Hill G, Wendell S, Que L, Holguin F, Shiva S. Bioenergetic Differences in the Airway Epithelium of Lean Versus Obese Asthmatics Are Driven by Nitric Oxide and Reflected in Circulating Platelets. Antioxid Redox Signal 2019; 31:673-686. [PMID: 30608004 PMCID: PMC6708272 DOI: 10.1089/ars.2018.7627] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Aims: Asthma, characterized by airway obstruction and hyper-responsiveness, is more severe and less responsive to treatment in obese subjects. While alterations in mitochondrial function and redox signaling have been implicated in asthma pathogenesis, it is unclear whether these mechanisms differ in lean versus obese asthmatics. In addition, we previously demonstrated that circulating platelets from asthmatic individuals have altered bioenergetics; however, it is unknown whether platelet mitochondrial changes reflect those observed in airway epithelial cells. Herein we hypothesized that lean and obese asthmatics show differential bioenergetics and redox signaling in airway cells and that these alterations could be measured in platelets from the same individual. Results: Using freshly isolated bronchial airway epithelial cells and platelets from lean and obese asthmatics and healthy individuals, we show that both cell types from obese asthmatics have significantly increased glycolysis, basal and maximal respiration, and oxidative stress compared with lean asthmatics and healthy controls. This increased respiration was associated with enhanced arginine metabolism by arginase, which has previously been shown to drive respiration. Inducible nitric oxide synthase (iNOS) was also upregulated in cells from all asthmatics. However, due to nitric oxide synthase uncoupling in obese asthmatics, overall nitric oxide (NO) bioavailability was decreased, preventing NO-dependent inhibition in obese asthmatic cells that was observed in lean asthmatics. Innovation and Conclusion: These data demonstrate bioenergetic differences between lean and obese asthmatics that are, in part, due to differences in NO signaling. They also suggest that the platelet may serve as a useful surrogate to understand redox, oxidative stress and bioenergetic changes in the asthmatic airway.
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Affiliation(s)
- Daniel Winnica
- Division of Pulmonary Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Catherine Corey
- Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Steven Mullett
- Health Sciences Metabolomics and Lipidomics Core, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Michael Reynolds
- Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Gabrielle Hill
- Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Stacy Wendell
- Health Sciences Metabolomics and Lipidomics Core, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.,Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Loretta Que
- Department of Pulmonary and Critical Care Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Fernando Holguin
- Division of Pulmonary Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Sruti Shiva
- Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.,Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.,Center for Metabolism and Mitochondrial Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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29
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Nie X, Wei J, Hao Y, Tao J, Li Y, Liu M, Xu B, Li B. Consistent Biomarkers and Related Pathogenesis Underlying Asthma Revealed by Systems Biology Approach. Int J Mol Sci 2019; 20:ijms20164037. [PMID: 31430856 PMCID: PMC6720652 DOI: 10.3390/ijms20164037] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 08/14/2019] [Accepted: 08/17/2019] [Indexed: 12/13/2022] Open
Abstract
Asthma is a common chronic airway disease worldwide. Due to its clinical and genetic heterogeneity, the cellular and molecular processes in asthma are highly complex and relatively unknown. To discover novel biomarkers and the molecular mechanisms underlying asthma, several studies have been conducted by focusing on gene expression patterns in epithelium through microarray analysis. However, few robust specific biomarkers were identified and some inconsistent results were observed. Therefore, it is imperative to conduct a robust analysis to solve these problems. Herein, an integrated gene expression analysis of ten independent, publicly available microarray data of bronchial epithelial cells from 348 asthmatic patients and 208 healthy controls was performed. As a result, 78 up- and 75 down-regulated genes were identified in bronchial epithelium of asthmatics. Comprehensive functional enrichment and pathway analysis revealed that response to chemical stimulus, extracellular region, pathways in cancer, and arachidonic acid metabolism were the four most significantly enriched terms. In the protein-protein interaction network, three main communities associated with cytoskeleton, response to lipid, and regulation of response to stimulus were established, and the most highly ranked 6 hub genes (up-regulated CD44, KRT6A, CEACAM5, SERPINB2, and down-regulated LTF and MUC5B) were identified and should be considered as new biomarkers. Pathway cross-talk analysis highlights that signaling pathways mediated by IL-4/13 and transcription factor HIF-1α and FOXA1 play crucial roles in the pathogenesis of asthma. Interestingly, three chemicals, polyphenol catechin, antibiotic lomefloxacin, and natural alkaloid boldine, were predicted and may be potential drugs for asthma treatment. Taken together, our findings shed new light on the common molecular pathogenesis mechanisms of asthma and provide theoretical support for further clinical therapeutic studies.
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Affiliation(s)
- Xiner Nie
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Jinyi Wei
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Youjin Hao
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Jingxin Tao
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Yinghong Li
- School of Biological Information, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Mingwei Liu
- College of Laboratory Medicine, Chongqing Medical University, Chongqing 400046, China
| | - Boying Xu
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Bo Li
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China.
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30
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Ning F, Takeda K, Schedel M, Domenico J, Joetham A, Gelfand EW. Hypoxia enhances CD8 + T C2 cell-dependent airway hyperresponsiveness and inflammation through hypoxia-inducible factor 1α. J Allergy Clin Immunol 2019; 143:2026-2037.e7. [PMID: 30660639 PMCID: PMC11098440 DOI: 10.1016/j.jaci.2018.11.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 11/21/2018] [Accepted: 11/30/2018] [Indexed: 01/11/2023]
Abstract
BACKGROUND CD8+ type 2 cytotoxic T (TC2) cells undergo transcriptional reprogramming to IL-13 production in the presence of IL-4 to become potent, steroid-insensitive, pathogenic effector cells in asthmatic patients and in mice in a model of experimental asthma. However, no studies have described the effects of hypoxia exposure on TC2 cell differentiation. OBJECTIVE We determined the effects of hypoxia exposure on IL-13-producing CD8+ TC2 cells. METHODS CD8+ transgenic OT-1 cells differentiated with IL-2 and IL-4 (TC2 cells) were exposed to normoxia (21% oxygen) or hypoxia (3% oxygen), and IL-13 production in vitro was monitored. After differentiation under these conditions, cells were adoptively transferred into CD8-deficient mice, and lung allergic responses, including airway hyperresponsiveness to inhaled methacholine, were assessed. The effects of pharmacologic inhibitors of hypoxia-inducible factor (HIF) 1α and HIF-2α were determined, as were responses in HIF-1α-deficient OT-1 cells. RESULTS Under hypoxic conditioning, CD8+ TC2 cell differentiation was significantly enhanced, with increased numbers of IL-13+ T cells and increased production of IL-13 in vitro. Adoptive transfer of TC2 cells differentiated under hypoxic conditioning restored lung allergic responses in sensitized and challenged CD8-deficient recipients to a greater degree than seen in recipients of TC2 cells differentiated under normoxic conditioning. Pharmacologic inhibition of HIF-1α or genetic manipulation to reduce HIF-1α expression reduced the hypoxia-enhanced differentiation of TC2 cells, IL-13 production, and the capacity of transferred cells to restore lung allergic responses in vivo. IL-4-dependent, hypoxia-mediated increases in HIF-1α and TC2 cell differentiation were shown to be mediated through activation of Janus kinase 1/3 and GATA-3. CONCLUSIONS Hypoxia enhances CD8+ TC2 cell-dependent airway hyperresponsiveness and inflammation through HIF-1α activation. These findings coupled with the known insensitivity of CD8+ T cells to corticosteroids suggests that activation of the IL-4-HIF-1α-IL-13 axis might play a role in the development of steroid-refractory asthma.
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Affiliation(s)
- Fangkun Ning
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, Colo
| | - Katsuyuki Takeda
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, Colo
| | - Michaela Schedel
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, Colo
| | - Joanne Domenico
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, Colo
| | - Anthony Joetham
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, Colo
| | - Erwin W Gelfand
- Division of Cell Biology, Department of Pediatrics, National Jewish Health, Denver, Colo.
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31
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Rayner L, McGovern A, Creagh-Brown B, Woodmansey C, de Lusignan S. Type 2 Diabetes and Asthma: Systematic Review of the Bidirectional Relationship. Curr Diabetes Rev 2019; 15:118-126. [PMID: 29992891 DOI: 10.2174/1573399814666180711114859] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 04/10/2018] [Accepted: 07/04/2018] [Indexed: 01/03/2023]
Abstract
BACKGROUND AND OBJECTIVE Obesity is an important contributor to the risk of both asthma and Type 2 Diabetes (T2DM). However, it has been suggested that T2DM and asthma are also independently associated. The aim of this systematic review was to synthesize the evidence for an independent relationship between T2DM and asthma. METHODS MEDLINE and EMBASE were searched for studies reporting the relationship between asthma and T2DM in adults. Given a potential bidirectional relationship, articles relating to T2DM as a risk factor for asthma, and asthma as a risk factor for T2DM were examined separately. RESULTS Eight studies were identified for inclusion in the review (n=2,934,399 participants). Four studies examined incident diabetes in those with asthma. The pooled (random effects model) adjusted hazard ratio for incident T2DM in asthma was 1.37 (95%CI 1.12-1.69; p <0.001) after controlling for BMI. Four studies reported prevalence or incidence rates of asthma in people with T2DM; higher rates of asthma in those with T2DM were reported in all four studies. Meta-analysis of results was not possible due to methodological heterogeneity. The quality of included studies was good, but due to small numbers, publication bias cannot be excluded. CONCLUSION The published literature suggests a bidirectional independent relationship between T2DM and asthma, although we cannot exclude publication bias.
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Affiliation(s)
- Louise Rayner
- Department of Clinical and Experimental Medicine, University of Surrey, Guildford GU2 7XH, United Kingdom
- Royal Surrey County Hospital NHS Foundation Trust, Guildford, United Kingdom
| | - Andrew McGovern
- Department of Clinical and Experimental Medicine, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Ben Creagh-Brown
- Department of Clinical and Experimental Medicine, University of Surrey, Guildford GU2 7XH, United Kingdom
- Royal Surrey County Hospital NHS Foundation Trust, Guildford, United Kingdom
| | - Chris Woodmansey
- Department of Clinical and Experimental Medicine, University of Surrey, Guildford GU2 7XH, United Kingdom
- Royal Surrey County Hospital NHS Foundation Trust, Guildford, United Kingdom
| | - Simon de Lusignan
- Department of Clinical and Experimental Medicine, University of Surrey, Guildford GU2 7XH, United Kingdom
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Caulfield JI, Caruso MJ, Bourne RA, Chirichella NR, Klein LC, Craig T, Bonneau RH, August A, Cavigelli SA. Asthma Induction During Development and Adult Lung Function, Behavior and Brain Gene Expression. Front Behav Neurosci 2018; 12:188. [PMID: 30214402 PMCID: PMC6125297 DOI: 10.3389/fnbeh.2018.00188] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 08/06/2018] [Indexed: 12/13/2022] Open
Abstract
In developing youth, allergic asthma is the most common chronic condition, with 9%–10% of youth affected. Asthma onset during childhood and adolescence is further associated with other health issues, particularly psychiatric conditions. To understand causal mechanisms by which developmental asthma may lead to altered behavior, brain and health trajectories, we developed a mouse model of developmental allergic asthma. In the current study, we tested for potential long-term effects of developmental asthma on adult lung function and behavior and brain gene expression associated with emotion and stress regulation. We manipulated airway inflammation (AI) and methacholine (MCH)-induced bronchospasm (resulting in labored breathing, LB) in young male and female BALB/cJ mice and measured adult outcomes 3 months after final asthma manipulations. Results indicated that allergen exposure, used to cause AI, and which ended on post-natal day 56 (P56), led to persistent lung AI, mucus buildup and gene expression related to allergic asthma 3 months after final allergen exposure. In addition, at this same age, early allergen exposure led to altered brain gene expression related to stress regulation (prefrontal corticotropin releasing hormone receptor 1, Crhr1 and hippocampal glucocorticoid receptor, GR) and serotonin function (brainstem serotonin transporter, SERT). On the other hand, LB events during development led to altered anxiety-related behavior. Importantly, sex and pre-asthma fear-related behavior (ultrasonic vocalization, USV rates) modulated these adult outcomes. Asthma that develops during childhood/adolescence may have long-term impacts on emotion and stress regulation mechanisms, and these influences may be moderated by sex and pre-asthma temperament.
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Affiliation(s)
- Jasmine I Caulfield
- Department of Biobehavioral Health, Pennsylvania State University, University Park, PA, United States.,The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, United States.,Center for Brain, Behavior, and Cognition, Pennsylvania State University, University Park, PA, United States
| | - Michael J Caruso
- Department of Biobehavioral Health, Pennsylvania State University, University Park, PA, United States.,Center for Brain, Behavior, and Cognition, Pennsylvania State University, University Park, PA, United States
| | - Rebecca A Bourne
- Department of Biobehavioral Health, Pennsylvania State University, University Park, PA, United States
| | - Nicole R Chirichella
- Department of Biobehavioral Health, Pennsylvania State University, University Park, PA, United States
| | - Laura C Klein
- Department of Biobehavioral Health, Pennsylvania State University, University Park, PA, United States
| | - Timothy Craig
- Allergy, Asthma & Immunology Section, Departments of Medicine and Pediatrics, Penn State University, Hershey, PA, United States
| | - Robert H Bonneau
- Departments of Microbiology and Immunology and Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Avery August
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY, United States
| | - Sonia A Cavigelli
- Department of Biobehavioral Health, Pennsylvania State University, University Park, PA, United States.,The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, United States.,Center for Brain, Behavior, and Cognition, Pennsylvania State University, University Park, PA, United States
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Abstract
The bidirectional epidemiological association between asthma and obesity is well known. Recent evidence suggests that there is an intersection of the pathophysiological molecular pathways leading to either obesity or asthma, at the level of mitochondria. This is not surprising, because mitochondria, beyond their roles as the metabolic powerhouses of the cell, serve as sensors of threats, regulators of stress signaling, and effectors of cytotoxicity. Reduced mitochondrial function and low metabolic activity are well-recognized features of obesity. Three distinct lines of experimental evidences connect mitochondrial dysfunction with asthma. First, asthma is associated with aberrant mitochondrial metabolism. Second, mitochondrial dysfunction may either induce asthma-like features or increase asthma severity. Third, mitochondria-targeted therapies appear effective in preventing or reversing asthma features. Importantly, mitochondrial dysfunction in airway epithelial cells appears to be a powerful trigger for airway remodeling that is independent of cellular inflammation. This is clinically relevant to the obese-asthma phenotype, with exaggerated symptoms despite apparently low levels of inflammation, and poor response to antiinflammatory treatment. In summary, mitochondrial dysfunction is a common thread tying together the twin epidemics of obesity and asthma. Environmental and lifestyle factors leading to primary mitochondrial dysfunction may be increasing the risk for either disease. Further, secondary mitochondrial dysfunction emerging from the pathogenesis of either obesity or asthma may increase the risk of the other. Mitochondrial health-centric strategies may be relevant to prevention and treatment of both obesity and asthma, and should be actively considered.
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34
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Hu HH, Deng H, Ling S, Sun H, Kenakin T, Liang X, Fang Y. Chemical genomic analysis of GPR35 signaling. Integr Biol (Camb) 2018; 9:451-463. [PMID: 28425521 DOI: 10.1039/c7ib00005g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
GPR35, a family A orphan G protein-coupled receptor, has been implicated in inflammatory, neurological, and cardiovascular diseases. However, not much is known about the signaling and functions of GPR35. We performed a label-free kinome short hairpin RNA screen and identified a putative signaling network of GPR35 in HT-29 cells, some of which was validated using gene expression, biochemical and cellular assays. The results showed that GPR35 induced hypoxia-inducible factor 1α, and was involved in synaptic transmission, sensory perception, the immune system, and morphogenetic processes. Collectively, our data suggest that GPR35 may play an important role in response to hypoxic stress and be a potential target for the treatment of inflammatory, cardiovascular, and neurological disorders.
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Affiliation(s)
- Heidi Haibei Hu
- Biochemical Technologies, Corning R&D Corporation, Corning Incorporated, Corning, NY 14831, USA.
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35
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Marks E, Naudin C, Nolan G, Goggins BJ, Burns G, Mateer SW, Latimore JK, Minahan K, Plank M, Foster PS, Callister R, Veysey M, Walker MM, Talley NJ, Radford-Smith G, Keely S. Regulation of IL-12p40 by HIF controls Th1/Th17 responses to prevent mucosal inflammation. Mucosal Immunol 2017; 10:1224-1236. [PMID: 28120851 DOI: 10.1038/mi.2016.135] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 12/06/2016] [Indexed: 02/04/2023]
Abstract
Intestinal inflammatory lesions are inherently hypoxic, due to increased metabolic demands created by cellular infiltration and proliferation, and reduced oxygen supply due to vascular damage. Hypoxia stabilizes the transcription factor hypoxia-inducible factor-1α (HIF) leading to a coordinated induction of endogenously protective pathways. We identified IL12B as a HIF-regulated gene and aimed to define how the HIF-IL-12p40 axis influenced intestinal inflammation. Intestinal lamina propria lymphocytes (LPL) were characterized in wild-type and IL-12p40-/- murine colitis treated with vehicle or HIF-stabilizing prolyl-hydroxylase inhibitors (PHDi). IL12B promoter analysis was performed to examine hypoxia-responsive elements. Immunoblot analysis of murine and human LPL supernatants was performed to characterize the HIF/IL-12p40 signaling axis. We observed selective induction of IL-12p40 following PHDi-treatment, concurrent with suppression of Th1 and Th17 responses in murine colitis models. In the absence of IL-12p40, PHDi-treatment was ineffective. Analysis of the IL12B promoter identified canonical HIF-binding sites. HIF stabilization in LPLs resulted in production of IL-12p40 homodimer which was protective against colitis. The selective induction of IL-12p40 by HIF-1α leads to a suppression of mucosal Th1 and Th17 responses. This HIF-IL12p40 axis may represent an endogenously protective mechanism to limit the progression of chronic inflammation, shifting from pro-inflammatory IL-12p70 to an antagonistic IL-12p40 homodimer.
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Affiliation(s)
- E Marks
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - C Naudin
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - G Nolan
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - B J Goggins
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia.,Priority Research Centre for Digestive Health and Neurogastroenterology, University of Newcastle, Newcastle, New South Wales, Australia
| | - G Burns
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia.,Priority Research Centre for Digestive Health and Neurogastroenterology, University of Newcastle, Newcastle, New South Wales, Australia
| | - S W Mateer
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia.,Priority Research Centre for Digestive Health and Neurogastroenterology, University of Newcastle, Newcastle, New South Wales, Australia
| | - J K Latimore
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia.,Priority Research Centre for Digestive Health and Neurogastroenterology, University of Newcastle, Newcastle, New South Wales, Australia
| | - K Minahan
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia.,Priority Research Centre for Digestive Health and Neurogastroenterology, University of Newcastle, Newcastle, New South Wales, Australia
| | - M Plank
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - P S Foster
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - R Callister
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia.,Priority Research Centre for Digestive Health and Neurogastroenterology, University of Newcastle, Newcastle, New South Wales, Australia
| | - M Veysey
- Priority Research Centre for Digestive Health and Neurogastroenterology, University of Newcastle, Newcastle, New South Wales, Australia.,School of Medicine, Public Health, University of Newcastle, Newcastle, New South Wales, Australia
| | - M M Walker
- Priority Research Centre for Digestive Health and Neurogastroenterology, University of Newcastle, Newcastle, New South Wales, Australia.,School of Medicine, Public Health, University of Newcastle, Newcastle, New South Wales, Australia
| | - N J Talley
- Priority Research Centre for Digestive Health and Neurogastroenterology, University of Newcastle, Newcastle, New South Wales, Australia.,School of Medicine, Public Health, University of Newcastle, Newcastle, New South Wales, Australia
| | - G Radford-Smith
- Royal Brisbane and Women's Hospital, Brisbane, School of Medicine, University of Queensland, Brisbane, Queensland, Australia.,QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - S Keely
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia.,Priority Research Centre for Digestive Health and Neurogastroenterology, University of Newcastle, Newcastle, New South Wales, Australia
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Chen JY, Lin CH, Chen BC. Hypoxia-induced ADAM 17 expression is mediated by RSK1-dependent C/EBPβ activation in human lung fibroblasts. Mol Immunol 2017. [PMID: 28646679 DOI: 10.1016/j.molimm.2017.06.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Hypoxia was identified as a mediator of lung fibrosis in patients with chronic obstructive asthma (COA). Overexpression of a disintegrin and metalloproteinase 17 (ADAM 17) and connective tissue growth factor (CTGF) leads to development of tissue fibrosis. However, the signaling pathway in hypoxia-induced ADAM 17 expression remains poorly defined. In this study, we investigated the roles that ribosomal S-6 kinase 1 (RSK1)/CCAAT/enhancer-binding protein β (C/EBPβ)-dependent ADAM 17 expression plays in hypoxia-induced CTGF expression in human lung fibroblasts. We observed that hypoxia caused increases in ADAM 17 expression and ADAM 17-luciferase activity in WI-38 cells. Hypoxia-induced CTGF-luciferase activity and CTGF expression were reduced in cells transfected with small interfering (si)RNA of ADAM 17 in WI-38 cells. Moreover, hypoxia-induced ADAM 17 expression was reduced by RSK1 siRNA and C/EBPβ siRNA. Hypoxia caused time-dependent increases in RSK1 phosphorylation at Thr359/Ser363. Exposure of cells to hypoxia resulted in increased C/EBPβ phosphorylation at Thr266 and C/EBPβ-luciferase activity in time-dependent manners, and these effects were suppressed by RSK1 siRNA. Hypoxia induced recruitment of C/EBPβ to the ADAM 17 promoter. Furthermore, CTGF-luciferase activity induced by hypoxia was attenuated by RSK1 siRNA and C/EBPβ siRNA. These results suggest that hypoxia instigates the RSK1-dependent C/EBPβ signaling pathway, which in turn initiates binding of C/EBPβ to the ADAM 17 promoter and ultimately induces ADAM 17 expression in human lung fibroblasts. Moreover, RSK1/C/EBPβ-dependent ADAM 17 expression is involved in hypoxia-induced CTGF expression. Our results suggest possible therapeutic approaches for treating hypoxia-mediated lung fibrosis in COA.
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Affiliation(s)
- Jing-Yun Chen
- Gradual Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chien-Huang Lin
- Gradual Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan.
| | - Bing-Chang Chen
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
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37
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Peri-adolescent asthma symptoms cause adult anxiety-related behavior and neurobiological processes in mice. Behav Brain Res 2017; 326:244-255. [PMID: 28284954 DOI: 10.1016/j.bbr.2017.02.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 02/23/2017] [Accepted: 02/27/2017] [Indexed: 12/29/2022]
Abstract
Human and animal studies have shown that physical challenges and stressors during adolescence can have significant influences on behavioral and neurobiological development associated with internalizing disorders such as anxiety and depression. Given the prevalence of asthma during adolescence and increased rates of internalizing disorders in humans with asthma, we used a mouse model to test if and which symptoms of adolescent allergic asthma (airway inflammation or labored breathing) cause adult anxiety- and depression-related behavior and brain function. To mimic symptoms of allergic asthma in young BALB/cJ mice (postnatal days [P] 7-57; N=98), we induced lung inflammation with repeated intranasal administration of house dust mite extract (most common aeroallergen for humans) and bronchoconstriction with aerosolized methacholine (non-selective muscarinic receptor agonist). Three experimental groups, in addition to a control group, included: (1) "Airway inflammation only", allergen exposure 3 times/week, (2) "Labored breathing only", methacholine exposure once/week, and (3) "Airway inflammation+Labored breathing", allergen and methacholine exposure. Compared to controls, mice that experienced methacholine-induced labored breathing during adolescence displayed a ∼20% decrease in time on open arms of the elevated plus maze in early adulthood (P60), a ∼30% decrease in brainstem serotonin transporter (SERT) mRNA expression and a ∼50% increase in hippocampal serotonin receptor 1a (5Htr1a) and corticotropin releasing hormone receptor 1 (Crhr1) expression in adulthood (P75). This is the first evidence that experimentally-induced clinical symptoms of adolescent asthma alter adult anxiety-related behavior and brain function several weeks after completion of asthma manipulations.
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38
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Prasher B, Varma B, Kumar A, Khuntia BK, Pandey R, Narang A, Tiwari P, Kutum R, Guin D, Kukreti R, Dash D, Mukerji M. Ayurgenomics for stratified medicine: TRISUTRA consortium initiative across ethnically and geographically diverse Indian populations. JOURNAL OF ETHNOPHARMACOLOGY 2017; 197:274-293. [PMID: 27457695 DOI: 10.1016/j.jep.2016.07.063] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 07/02/2016] [Accepted: 07/21/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Genetic differences in the target proteins, metabolizing enzymes and transporters that contribute to inter-individual differences in drug response are not integrated in contemporary drug development programs. Ayurveda, that has propelled many drug discovery programs albeit for the search of new chemical entities incorporates inter-individual variability "Prakriti" in development and administration of drug in an individualized manner. Prakriti of an individual largely determines responsiveness to external environment including drugs as well as susceptibility to diseases. Prakriti has also been shown to have molecular and genomic correlates. We highlight how integration of Prakriti concepts can augment the efficiency of drug discovery and development programs through a unique initiative of Ayurgenomics TRISUTRA consortium. METHODS Five aspects that have been carried out are (1) analysis of variability in FDA approved pharmacogenomics genes/SNPs in exomes of 72 healthy individuals including predominant Prakriti types and matched controls from a North Indian Indo-European cohort (2) establishment of a consortium network and development of five genetically homogeneous cohorts from diverse ethnic and geo-climatic background (3) identification of parameters and development of uniform standard protocols for objective assessment of Prakriti types (4) development of protocols for Prakriti evaluation and its application in more than 7500 individuals in the five cohorts (5) Development of data and sample repository and integrative omics pipelines for identification of genomic correlates. RESULTS Highlight of the study are (1) Exome sequencing revealed significant differences between Prakriti types in 28 SNPs of 11 FDA approved genes of pharmacogenomics relevance viz. CYP2C19, CYP2B6, ESR1, F2, PGR, HLA-B, HLA-DQA1, HLA-DRB1, LDLR, CFTR, CPS1. These variations are polymorphic in diverse Indian and world populations included in 1000 genomes project. (2) Based on the phenotypic attributes of Prakriti we identified anthropometry for anatomical features, biophysical parameters for skin types, HRV for autonomic function tests, spirometry for vital capacity and gustometry for taste thresholds as objective parameters. (3) Comparison of Prakriti phenotypes across different ethnic, age and gender groups led to identification of invariant features as well as some that require weighted considerations across the cohorts. CONCLUSION Considering the molecular and genomics differences underlying Prakriti and relevance in disease pharmacogenomics studies, this novel integrative platform would help in identification of differently susceptible and drug responsive population. Additionally, integrated analysis of phenomic and genomic variations would not only allow identification of clinical and genomic markers of Prakriti for application in personalized medicine but also its integration in drug discovery and development programs.
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Affiliation(s)
- Bhavana Prasher
- CSIR Ayurgenomics Unit- TRISUTRA, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India; Genomics and Molecular Medicine & CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India; Academy of Scientific & Innovative research, CSIR-IGIB, Delhi, India.
| | - Binuja Varma
- CSIR Ayurgenomics Unit- TRISUTRA, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India
| | - Arvind Kumar
- CSIR Ayurgenomics Unit- TRISUTRA, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India
| | - Bharat Krushna Khuntia
- CSIR Ayurgenomics Unit- TRISUTRA, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India
| | - Rajesh Pandey
- CSIR Ayurgenomics Unit- TRISUTRA, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India
| | - Ankita Narang
- CSIR Ayurgenomics Unit- TRISUTRA, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India
| | - Pradeep Tiwari
- CSIR Ayurgenomics Unit- TRISUTRA, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India; Academy of Scientific & Innovative research, CSIR-IGIB, Delhi, India
| | - Rintu Kutum
- G.N.Ramachandran Knowledge Centre for Genome Informatics, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India; Academy of Scientific & Innovative research, CSIR-IGIB, Delhi, India
| | - Debleena Guin
- Genomics and Molecular Medicine & CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India
| | - Ritushree Kukreti
- Genomics and Molecular Medicine & CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India
| | - Debasis Dash
- CSIR Ayurgenomics Unit- TRISUTRA, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India; G.N.Ramachandran Knowledge Centre for Genome Informatics, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India; Academy of Scientific & Innovative research, CSIR-IGIB, Delhi, India
| | - Mitali Mukerji
- CSIR Ayurgenomics Unit- TRISUTRA, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India; Genomics and Molecular Medicine & CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi 110020, India; Academy of Scientific & Innovative research, CSIR-IGIB, Delhi, India.
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39
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Jiang D, Gao F, Zhang Y, Wong DSH, Li Q, Tse HF, Xu G, Yu Z, Lian Q. Mitochondrial transfer of mesenchymal stem cells effectively protects corneal epithelial cells from mitochondrial damage. Cell Death Dis 2016; 7:e2467. [PMID: 27831562 PMCID: PMC5260876 DOI: 10.1038/cddis.2016.358] [Citation(s) in RCA: 162] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 09/23/2016] [Accepted: 10/03/2016] [Indexed: 12/19/2022]
Abstract
Recent studies have demonstrated that mesenchymal stem cells (MSCs) can donate mitochondria to airway epithelial cells and rescue mitochondrial damage in lung injury. We sought to determine whether MSCs could donate mitochondria and protect against oxidative stress-induced mitochondrial dysfunction in the cornea. Co-culturing of MSCs and corneal epithelial cells (CECs) indicated that the efficiency of mitochondrial transfer from MSCs to CECs was enhanced by Rotenone (Rot)-induced oxidative stress. The efficient mitochondrial transfer was associated with increased formation of tunneling nanotubes (TNTs) between MSCs and CECs, tubular connections that allowed direct intercellular communication. Separation of MSCs and CECs by a transwell culture system revealed no mitochiondrial transfer from MSCs to CECs and mitochondrial function was impaired when CECs were exposed to Rot challenge. CECs with or without mitochondrial transfer from MSCs displayed a distinct survival capacity and mitochondrial oxygen consumption rate. Mechanistically, increased filopodia outgrowth in CECs for TNT formation was associated with oxidative inflammation-activated NFκB/TNFαip2 signaling pathways that could be attenuated by reactive oxygen species scavenger N-acetylcysteine (NAC) treatment. Furthermore, MSCs grown on a decellularized porcine corneal scaffold were transplanted onto an alkali-injured eye in a rabbit model. Enhanced corneal wound healing was evident following healthy MSC scaffold transplantation. And transferred mitochondria was detected in corneal epithelium. In conclusion, mitochondrial transfer from MSCs provides novel protection for the cornea against oxidative stress-induced mitochondrial damage. This therapeutic strategy may prove relevant for a broad range of mitochondrial diseases.
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Affiliation(s)
- Dan Jiang
- Department of Ophthalmology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Fei Gao
- Department of Ophthalmology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Yuelin Zhang
- Department of Medicine, The University of Hong Kong, Hong Kong, China
| | - David Sai Hung Wong
- Department of Ophthalmology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Qing Li
- Department of Ophthalmology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Hung-Fat Tse
- Department of Medicine, The University of Hong Kong, Hong Kong, China.,Shenzhen Institutes of Research and Innovation, University of Hong Kong, Hong Kong, China
| | - Goufeng Xu
- National Engineering Laboratory for Regenerative Medical Implantable Devices, 12 Yuyan Road, Guangzhou, China
| | - Zhendong Yu
- Central Laboratory, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Qizhou Lian
- Department of Ophthalmology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.,Department of Medicine, The University of Hong Kong, Hong Kong, China.,Shenzhen Institutes of Research and Innovation, University of Hong Kong, Hong Kong, China
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40
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Kelly RS, Dahlin A, McGeachie MJ, Qiu W, Sordillo J, Wan ES, Wu AC, Lasky-Su J. Asthma Metabolomics and the Potential for Integrative Omics in Research and the Clinic. Chest 2016; 151:262-277. [PMID: 27776981 DOI: 10.1016/j.chest.2016.10.008] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 09/26/2016] [Accepted: 10/07/2016] [Indexed: 12/11/2022] Open
Abstract
Asthma is a complex disease well-suited to metabolomic profiling, both for the development of novel biomarkers and for the improved understanding of pathophysiology. In this review, we summarize the 21 existing metabolomic studies of asthma in humans, all of which reported significant findings and concluded that individual metabolites and metabolomic profiles measured in exhaled breath condensate, urine, plasma, and serum could identify people with asthma and asthma phenotypes with high discriminatory ability. There was considerable consistency across the studies in terms of the reported biomarkers, regardless of biospecimen, profiling technology, and population age. In particular, acetate, adenosine, alanine, hippurate, succinate, threonine, and trans-aconitate, and pathways relating to hypoxia response, oxidative stress, immunity, inflammation, lipid metabolism and the tricarboxylic acid cycle were all identified as significant in at least two studies. There were also a number of nonreplicated results; however, the literature is not yet sufficiently developed to determine whether these represent spurious findings or reflect the substantial heterogeneity and limited statistical power in the studies and their methods to date. This review highlights the need for additional asthma metabolomic studies to explore these issues, and, further, the need for standardized methods in the way these studies are conducted. We conclude by discussing the potential of translation of these metabolomic findings into clinically useful biomarkers and the crucial role that integrated omics is likely to play in this endeavor.
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Affiliation(s)
- Rachel S Kelly
- Channing Division of Network Medicine, Brigham Women's Hospital and Harvard Medical School, Boston, MA
| | - Amber Dahlin
- Channing Division of Network Medicine, Brigham Women's Hospital and Harvard Medical School, Boston, MA
| | - Michael J McGeachie
- Channing Division of Network Medicine, Brigham Women's Hospital and Harvard Medical School, Boston, MA
| | - Weiliang Qiu
- Channing Division of Network Medicine, Brigham Women's Hospital and Harvard Medical School, Boston, MA
| | - Joanne Sordillo
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care, Boston, MA
| | - Emily S Wan
- Channing Division of Network Medicine, Brigham Women's Hospital and Harvard Medical School, Boston, MA; VA Boston Healthcare System, Department of Veterans Affairs, Boston, MA
| | - Ann Chen Wu
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care, Boston, MA
| | - Jessica Lasky-Su
- Channing Division of Network Medicine, Brigham Women's Hospital and Harvard Medical School, Boston, MA.
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Soree P, Gupta RK, Singh K, Desiraju K, Agrawal A, Vats P, Bharadwaj A, Baburaj TP, Chaudhary P, Singh VK, Verma S, Bajaj AC, Singh SB. Raised HIF1α during normoxia in high altitude pulmonary edema susceptible non-mountaineers. Sci Rep 2016; 6:26468. [PMID: 27210110 PMCID: PMC4876441 DOI: 10.1038/srep26468] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 04/29/2016] [Indexed: 12/29/2022] Open
Abstract
High altitude pulmonary edema (HAPE) susceptibility is associated with EGLN1 polymorphisms, we hypothesized that HAPE-susceptible (HAPE-S, had HAPE episode in past) subjects may exhibit abnormal HIF1α levels in normoxic conditions. We measured HIF1α levels in HAPE-S and HAPE resistant (HAPE-R, no HAPE episode) individuals with similar pulmonary functions. Hemodynamic responses were also measured before and after normobaric hypoxia (Fi02 = 0.12 for 30 min duration at sea level) in both groups. . HIF1α was higher in HAPE-S (320.3 ± 267.5 vs 58.75 ± 33.88 pg/ml, P < 0.05) than HAPE-R, at baseline, despite no significant difference in baseline oxygen saturations (97.7 ± 1.7% and 98.8 ± 0.7). As expected, HAPE-S showed an exaggerated increase in pulmonary artery pressure (27.9 ± 6 vs 19.3 ± 3.7 mm Hg, P < 0.05) and a fall in peripheral oxygen saturation (66.9 ± 11.7 vs 78.7 ± 3.8%, P < 0.05), when exposed to hypoxia. HIF1α levels at baseline could accurately classify members of the two groups (AUC = 0.87). In a subset of the groups where hemoglobin fractions were additionally measured to understand the cause of elevated hypoxic response at baseline, two of four HAPE-S subjects showed reduced HbA. In conclusion, HIF 1 α levels during normoxia may represent an important marker for determination of HAPE susceptibility.
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Affiliation(s)
- Poonam Soree
- Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi 110054, India
| | - Rajinder K. Gupta
- Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi 110054, India
| | - Krishan Singh
- Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi 110054, India
| | - Koundinya Desiraju
- CSIR Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India
| | - Anurag Agrawal
- CSIR Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India
| | - Praveen Vats
- Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi 110054, India
| | - Abhishek Bharadwaj
- Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi 110054, India
| | - T. P. Baburaj
- Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi 110054, India
| | - Pooja Chaudhary
- Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi 110054, India
| | - Vijay K. Singh
- Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi 110054, India
| | - Saroj Verma
- Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi 110054, India
| | - Amir Chand Bajaj
- Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi 110054, India
| | - Shashi Bala Singh
- Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi 110054, India
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Abstract
Oxygen represents one of the major molecules required for the development and maintenance of life. An adequate response to hypoxia is therefore required for the functioning of the majority of living organisms and relies on the activation of the hypoxia-inducible factor (HIF) pathway. HIF prolyl hydroxylase domain-2 (PHD2) has long been recognized as the major regulator of this response, controlling a myriad of outcomes that range from cell death to proliferation. However, this enzyme has been associated with more pathways, making the role of this protein remarkably complex under distinct pathologies. While a protective role seems to exist in physiological conditions such as erythropoiesis; the picture is more complex during pathologies such as cancer. Since the regulation of this enzyme and its closest family members is currently considered as a possible therapy for various diseases, understanding the different particular roles of this protein is essential.
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Affiliation(s)
- Ana M Meneses
- Heisenberg Research Group, Department of Clinical Pathobiochemistry, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - Ben Wielockx
- Heisenberg Research Group, Department of Clinical Pathobiochemistry, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
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Xu W, Guo G, Li J, Ding Z, Sheng J, Li J, Tan W. Activation of Bcl-2-Caspase-9 Apoptosis Pathway in the Testis of Asthmatic Mice. PLoS One 2016; 11:e0149353. [PMID: 26938720 PMCID: PMC4777281 DOI: 10.1371/journal.pone.0149353] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 01/29/2016] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Apoptosis plays a critical role in controlling the proliferation and differentiation of germ cells during spermatogenesis. Dysregulation of the fine-tuned balance may lead to the onset of testicular diseases. In this study, we investigated the activation status of apoptosis pathways in the testicular tissues under the background of an asthmatic mouse model. METHODS Ten BALB/c mice were divided into two groups: the acute asthma group and the control group. In the acute asthma group, ovalbumin (OVA)-sensitized mice were challenged with aerosolized OVA for 7 days, while the control group was treated with physiological saline. After that, both epididymis and testis were collected to determine the sperm count and motility. Apoptosis in the testis was evaluated by DNA ladder, immunochemistry and further by PCR array of apoptosis-related genes. Finally, the cleavage of caspase-3 and poly ADP-ribose polymerase (PARP) was determined by western blot and the enzymatic activities of caspase-9 and 3/7 were assessed using Caspase-Glo kits. RESULTS Compared with control mice, significant decreases in the body weight, testis weight, sperm count and motility were seen in the experimental group. DNA ladder and immunochemistry showed significant increase in apoptotic index of the asthmatic testis, whereas a decrease in mRNA expression of Bcl-2 and increases in Bax, BNIP3, caspase-9, and AIF were observed in the asthma group. Furthermore, protein levels of AIF were significantly upregulated, while the translational expression of Bcl-2 was downregulated markedly. Consistently, caspase-9 activity in the testis of asthma mice was significantly higher than that of the control group. CONCLUSION Collectively, these results showed that Bcl-2-caspase-9 apoptosis pathway was clearly activated in the testis of asthmatic mice with the increased expression of apoptosis-related genes and proteins. To our knowledge, this is the first report demonstrating that asthma could lead to the activation of the mitochondrial apoptosis signaling pathway in the mouse testis.
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Affiliation(s)
- Wenyuan Xu
- Postgraduate Department of Internal Medicine, Weifang Medical University, Weifang, Shandong, China
| | - Guifang Guo
- Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China
| | - Junjuan Li
- Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China
| | - Zhaolei Ding
- Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China
| | - Jianhui Sheng
- Postgraduate Department of Internal Medicine, Weifang Medical University, Weifang, Shandong, China
| | - Juan Li
- Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China
| | - Wei Tan
- Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China
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Singh S, Bodas M, Bhatraju NK, Pattnaik B, Gheware A, Parameswaran PK, Thompson M, Freeman M, Mabalirajan U, Gosens R, Ghosh B, Pabelick C, Linneberg A, Prakash YS, Agrawal A. Hyperinsulinemia adversely affects lung structure and function. Am J Physiol Lung Cell Mol Physiol 2016; 310:L837-45. [PMID: 26919895 DOI: 10.1152/ajplung.00091.2015] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 02/12/2016] [Indexed: 12/13/2022] Open
Abstract
There is limited knowledge regarding the consequences of hyperinsulinemia on the lung. Given the increasing prevalence of obesity, insulin resistance, and epidemiological associations with asthma, this is a critical lacuna, more so with inhaled insulin on the horizon. Here, we demonstrate that insulin can adversely affect respiratory health. Insulin treatment (1 μg/ml) significantly (P < 0.05) increased the proliferation of primary human airway smooth muscle (ASM) cells and induced collagen release. Additionally, ASM cells showed a significant increase in calcium response and mitochondrial respiration upon insulin exposure. Mice administered intranasal insulin showed increased collagen deposition in the lungs as well as a significant increase in airway hyperresponsiveness. PI3K/Akt mediated activation of β-catenin, a positive regulator of epithelial-mesenchymal transition and fibrosis, was observed in the lungs of insulin-treated mice and lung cells. Our data suggests that hyperinsulinemia may have adverse effects on airway structure and function. Insulin-induced activation of β-catenin in lung tissue and the contractile effects on ASM cells may be causally related to the development of asthma-like phenotype.
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Affiliation(s)
- Suchita Singh
- Center of Excellence for Translational Research in Asthma and Lung Disease, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Manish Bodas
- Center of Excellence for Translational Research in Asthma and Lung Disease, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Naveen K Bhatraju
- Center of Excellence for Translational Research in Asthma and Lung Disease, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Bijay Pattnaik
- Center of Excellence for Translational Research in Asthma and Lung Disease, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Atish Gheware
- Center of Excellence for Translational Research in Asthma and Lung Disease, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | | | - Michael Thompson
- Departments of Anesthesiology and Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota; and
| | - Michelle Freeman
- Departments of Anesthesiology and Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota; and
| | - Ulaganathan Mabalirajan
- Center of Excellence for Translational Research in Asthma and Lung Disease, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Reinoud Gosens
- Department of Molecular Pharmacology, Groningen Research Institute for Asthma and COPD (GRIAC), University of Groningen, Groningen, Netherlands
| | - Balaram Ghosh
- Center of Excellence for Translational Research in Asthma and Lung Disease, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Christina Pabelick
- Departments of Anesthesiology and Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota; and
| | - Allan Linneberg
- Research Centre for Prevention and Health, the Capital Region of Denmark, Copenhagen, Denmark; Department of Clinical Experimental Research, Glostrup University Hospital, Glostrup, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Y S Prakash
- Departments of Anesthesiology and Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota; and
| | - Anurag Agrawal
- Center of Excellence for Translational Research in Asthma and Lung Disease, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India;
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Pattnaik B, Bodas M, Bhatraju NK, Ahmad T, Pant R, Guleria R, Ghosh B, Agrawal A. IL-4 promotes asymmetric dimethylarginine accumulation, oxo-nitrative stress, and hypoxic response-induced mitochondrial loss in airway epithelial cells. J Allergy Clin Immunol 2016; 138:130-141.e9. [PMID: 26915676 DOI: 10.1016/j.jaci.2015.11.036] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 10/13/2015] [Accepted: 11/13/2015] [Indexed: 01/02/2023]
Abstract
BACKGROUND Obesity is known to increase asthma risk and severity. Increased levels of asymmetric dimethylarginine (ADMA), an endogenous nitric oxide synthase inhibitor, are associated with mitochondrial toxicity, asthma, and metabolic syndrome. IL-4 upregulates the expression of protein arginine methyltransferases, which are essential for ADMA formation. Importantly, cross-talk between IL-4, ADMA, and mitochondrial dysfunction could explain how obesity and IL-4 can synergize to exacerbate allergic inflammation. OBJECTIVE We sought to investigate how IL-4, a key asthma-associated cytokine, can influence ADMA-related effects on lungs. METHODS BEAS2B (bronchial epithelial) cells were treated with IL-4 followed by ADMA and investigated for oxo-nitrative stress and resultant mitochondrial toxicity after 48 hours by using flow cytometry, confocal imaging, immunoblotting, and fluorimetric assays. RESULTS IL-4-induced mitotoxicity in BEAS2B cells was significantly higher in the presence of exogenous ADMA. IL-4 treatment led to proteolytic degradation of dimethylarginine dimethylaminohydrolase 2, which catabolizes ADMA. IL-4 pretreatment was associated with increased intracellular ADMA accumulation and increased ADMA-induced mitotoxicity. Airway epithelial cells treated with IL-4 followed by ADMA showed exaggerated oxo-nitrative stress and potent induction of the cellular hypoxic response, despite normoxic conditions. The hypoxic response was associated with reduced mitochondrial function but was reversible by overexpression of the mitochondrial biogenesis factor, mitochondrial transcription factor A. CONCLUSION We conclude that IL-4 promotes intracellular ADMA accumulation, leading to mitochondrial loss through oxo-nitrative stress and hypoxic response. This provides a novel understanding of how obesity, with high ADMA levels, and asthma, with high IL-4 levels, might potentiate each other and highlights the potential of mitochondrial-targeted therapeutics in obese subjects with asthma.
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Affiliation(s)
- Bijay Pattnaik
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Manish Bodas
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Naveen Kumar Bhatraju
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Tanveer Ahmad
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Richa Pant
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Randeep Guleria
- Department of Pulmonary Medicine and Sleep Disorders, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, Delhi, India
| | - Balaram Ghosh
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Anurag Agrawal
- Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Delhi, India.
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Agrawal A, Mabalirajan U. Rejuvenating cellular respiration for optimizing respiratory function: targeting mitochondria. Am J Physiol Lung Cell Mol Physiol 2015; 310:L103-13. [PMID: 26566906 DOI: 10.1152/ajplung.00320.2015] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 11/10/2015] [Indexed: 12/26/2022] Open
Abstract
Altered bioenergetics with increased mitochondrial reactive oxygen species production and degradation of epithelial function are key aspects of pathogenesis in asthma and chronic obstructive pulmonary disease (COPD). This motif is not unique to obstructive airway disease, reported in related airway diseases such as bronchopulmonary dysplasia and parenchymal diseases such as pulmonary fibrosis. Similarly, mitochondrial dysfunction in vascular endothelium or skeletal muscles contributes to the development of pulmonary hypertension and systemic manifestations of lung disease. In experimental models of COPD or asthma, the use of mitochondria-targeted antioxidants, such as MitoQ, has substantially improved mitochondrial health and restored respiratory function. Modulation of noncoding RNA or protein regulators of mitochondrial biogenesis, dynamics, or degradation has been found to be effective in models of fibrosis, emphysema, asthma, and pulmonary hypertension. Transfer of healthy mitochondria to epithelial cells has been associated with remarkable therapeutic efficacy in models of acute lung injury and asthma. Together, these form a 3R model--repair, reprogramming, and replacement--for mitochondria-targeted therapies in lung disease. This review highlights the key role of mitochondrial function in lung health and disease, with a focus on asthma and COPD, and provides an overview of mitochondria-targeted strategies for rejuvenating cellular respiration and optimizing respiratory function in lung diseases.
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Affiliation(s)
- Anurag Agrawal
- CSIR Institute of Genomics and Integrative Biology, Delhi, India
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Impaired Cell Cycle Regulation in a Natural Equine Model of Asthma. PLoS One 2015; 10:e0136103. [PMID: 26292153 PMCID: PMC4546272 DOI: 10.1371/journal.pone.0136103] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 07/29/2015] [Indexed: 12/14/2022] Open
Abstract
Recurrent airway obstruction (RAO) is a common and potentially debilitating lower airway disease in horses, which shares many similarities with human asthma. In susceptible horses RAO exacerbation is caused by environmental allergens and irritants present in hay dust. The objective of this study was the identification of genes and pathways involved in the pathology of RAO by global transcriptome analyses in stimulated peripheral blood mononuclear cells (PBMCs). We performed RNA-seq on PBMCs derived from 40 RAO affected and 45 control horses belonging to three cohorts of Warmblood horses: two half-sib families and one group of unrelated horses. PBMCs were stimulated with hay dust extract, lipopolysaccharides, a recombinant parasite antigen, or left unstimulated. The total dataset consisted of 561 individual samples. We detected significant differences in the expression profiles between RAO and control horses. Differential expression (DE) was most marked upon stimulation with hay dust extract. An important novel finding was a strong upregulation of CXCL13 together with many genes involved in cell cycle regulation in stimulated samples from RAO affected horses, in addition to changes in the expression of several HIF-1 transcription factor target genes. The RAO condition alters systemic changes observed as differential expression profiles of PBMCs. Those changes also depended on the cohort and stimulation of the samples and were dominated by genes involved in immune cell trafficking, development, and cell cycle regulation. Our findings indicate an important role of CXCL13, likely macrophage or Th17 derived, and the cell cycle regulator CDC20 in the immune response in RAO.
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Aggarwal S, Gheware A, Agrawal A, Ghosh S, Prasher B, Mukerji M. Combined genetic effects of EGLN1 and VWF modulate thrombotic outcome in hypoxia revealed by Ayurgenomics approach. J Transl Med 2015; 13:184. [PMID: 26047609 PMCID: PMC4457985 DOI: 10.1186/s12967-015-0542-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 05/18/2015] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Extreme constitution "Prakriti" types of Ayurveda exhibit systemic physiological attributes. Our earlier genetic study has revealed differences in EGLN1, key modulator of hypoxia axis between Prakriti types. This was associated with differences in high altitude adaptation and susceptibility to high altitude pulmonary edema (HAPE). In this study we investigate other molecular differences that contribute to systemic attributes of Prakriti that would be relevant in predictive marker discovery. METHODS Genotyping of 96 individuals of the earlier cohort was carried out in a panel of 2,800 common genic SNPs represented in Indian Genomic Variation Consortium (IGVC) panel from 24 diverse populations. Frequency distribution patterns of Prakriti differentiating variations (FDR correction P < 0.05) was studied in IGVC and 55 global populations (HGDP-CEPH) panels. Genotypic interactions between VWF, identified from the present analysis, and EGLN1 was analyzed using multinomial logistic regression in Prakriti and Indian populations from contrasting altitudes. Spearman's Rank correlation was used to study this genotypic interaction with respect to altitude in HGDP-CEPH panel. Validation of functional link between EGLN1 and VWF was carried out in a mouse model using chemical inhibition and siRNA studies. RESULT Significant differences in allele frequencies were observed in seven genes (SPTA1, VWF, OLR1, UCP2, OR6K3, LEPR, and OR10Z1) after FDR correction (P < 0.05). A non synonymous variation (C/T, rs1063856) associated with thrombosis/bleeding susceptibility respectively, differed significantly between Kapha (C-allele) and Pitta (T-allele) constitution types. A combination of derived EGLN1 allele (HAPE associated) and ancestral VWF allele (thrombosis associated) was significantly high in Kapha group compared to Pitta (p < 10(-5)). The combination of risk-associated Kapha alleles was nearly absent in natives of high altitude. Inhibition of EGLN1 using (DHB) and an EGLN1 specific siRNA in a mouse model lead to a marked increase in vWF levels as well as pro-thrombotic phenotype viz. reduced bleeding time and enhanced platelet count and activation. CONCLUSION We demonstrate for the first time a genetic link between EGLN1 and VWF in a constitution specific manner which could modulate thrombosis/bleeding susceptibility and outcomes of hypoxia. Integration of Prakriti in population stratification may help assemble common variations in key physiological axes that confers differences in disease occurrence and patho-phenotypic outcomes.
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Affiliation(s)
- Shilpi Aggarwal
- Genomics and Molecular Medicine, CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, New Delhi, India.
| | - Atish Gheware
- CSIR's Ayurgenomics Unit-TRISUTRA (Translational Research and Innovative Science ThRough Ayurgenomics), CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, New Delhi, 110 020, India. .,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India.
| | - Anurag Agrawal
- Genomics and Molecular Medicine, CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, New Delhi, India. .,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India.
| | | | - Bhavana Prasher
- CSIR's Ayurgenomics Unit-TRISUTRA (Translational Research and Innovative Science ThRough Ayurgenomics), CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, New Delhi, 110 020, India. .,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India.
| | - Mitali Mukerji
- Genomics and Molecular Medicine, CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, New Delhi, India. .,CSIR's Ayurgenomics Unit-TRISUTRA (Translational Research and Innovative Science ThRough Ayurgenomics), CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, New Delhi, 110 020, India. .,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India.
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Das S, Kumar M, Negi V, Pattnaik B, Prakash YS, Agrawal A, Ghosh B. MicroRNA-326 regulates profibrotic functions of transforming growth factor-β in pulmonary fibrosis. Am J Respir Cell Mol Biol 2014; 50:882-92. [PMID: 24279830 DOI: 10.1165/rcmb.2013-0195oc] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a fatal disorder resulting from the progressive remodeling of lungs, with no known effective treatment. Although transforming growth factor (TGF)-β has a well-established role in lung fibrosis, clinical experience with neutralizing antibodies to TGF-β has been disappointing, and strategies to directly suppress TGF-β1 secretion are needed. In this study we used a combination of in silico, in vitro, and in vivo approaches to identify microRNAs involved in TGF-β1 regulation and to validate the role of miR-326 in pulmonary fibrosis.We show that hsa-miR-326 regulates TGF-β1 expression and that hsa-miR-326 levels are inversely correlated to TGF-β1 protein levels in multiple human cell lines. The increase in TGF-β1 expression during the progression of bleomycin-induced lung fibrosis in mice was associated with loss of mmu-miR-326. Restoration of mmu-miR-326 levels by intranasal delivery of miR-326 mimics was sufficient to inhibit TGF-β1 expression and attenuate the fibrotic response. Moreover, human IPF lung specimens had markedly diminished miR-326 expression as compared with nonfibrotic lungs. Additional targets of miR-326 controlling TGF-β signaling and fibrosis-related pathways were identified, and miR-326 was found to down-regulate profibrotic genes, such as Ets1, Smad3, and matrix metalloproteinase 9, whereas it up-regulates antifibrotic genes, such as Smad7. Our results suggest for the first time that miR-326 plays a key role in regulating TGF-β1 expression and other profibrotic genes and could be useful in developing better therapeutic strategies for alleviating lung fibrosis.
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Affiliation(s)
- Sudipta Das
- 1 Molecular Immunogenetics Laboratory and Centre of Excellence for Translational Research in Asthma & Lung Disease, CSIR-Institute of Genomics and Integrative Biology, Delhi, India; and
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