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Chatterjee B, Sarkar M, Bose S, Alam MT, Chaudhary AA, Dixit AK, Tripathi PP, Srivastava AK. MicroRNAs: Key modulators of inflammation-associated diseases. Semin Cell Dev Biol 2024; 154:364-373. [PMID: 36670037 DOI: 10.1016/j.semcdb.2023.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 12/06/2022] [Accepted: 01/11/2023] [Indexed: 01/20/2023]
Abstract
Inflammation is a multifaceted biological and pathophysiological response to injuries, infections, toxins, and inflammatory mechanisms that plays a central role in the progression of various diseases. MicroRNAs (miRNAs) are tiny, 19-25 nucleotides long, non-coding RNAs that regulate gene expression via post-transcriptional repression. In this review, we highlight the recent findings related to the significant roles of miRNAs in regulating various inflammatory cascades and immunological processes in the context of many lifestyle-related diseases such as diabetes, cardiovascular diseases, cancer, etc. We also converse on how miRNAs can have a dual impact on inflammatory responses, suggesting that regulation of their functions for therapeutic purposes may be disease-specific.
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Affiliation(s)
- Bilash Chatterjee
- Cancer Biology & Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, WB, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Mrinmoy Sarkar
- Cancer Biology & Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, WB, India
| | - Subhankar Bose
- Cancer Biology & Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, WB, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Md Tanjim Alam
- Cancer Biology & Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, WB, India
| | - Anis Ahmad Chaudhary
- Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSUI), Riyadh, Saudi Arabia
| | | | - Prem Prakash Tripathi
- Cell Biology & Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata, WB, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Amit Kumar Srivastava
- Cancer Biology & Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, WB, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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2
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Aloufi N, Namkung Y, Traboulsi H, Wilson ET, Laporte SA, Kaplan BLF, Ross MK, Nair P, Eidelman DH, Baglole CJ. Standardized Cannabis Smoke Extract Induces Inflammation in Human Lung Fibroblasts. Front Pharmacol 2022; 13:852029. [PMID: 35418857 PMCID: PMC8996138 DOI: 10.3389/fphar.2022.852029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 02/25/2022] [Indexed: 11/18/2022] Open
Abstract
Cannabis (marijuana) is the most commonly used illicit product in the world and is the second most smoked plant after tobacco. There has been a rapid increase in the number of countries legalizing cannabis for both recreational and medicinal purposes. Smoking cannabis in the form of a joint is the most common mode of cannabis consumption. Combustion of cannabis smoke generates many of the same chemicals as tobacco smoke. Although the impact of tobacco smoke on respiratory health is well-known, the consequence of cannabis smoke on the respiratory system and, in particular, the inflammatory response is unclear. Besides the combustion products present in cannabis smoke, cannabis also contains cannabinoids including Δ9-tetrahydrocannabinol (Δ9-THC) and cannabidiol (CBD). These compounds are hydrophobic and not present in aqueous solutions. In order to understand the impact of cannabis smoke on pathological mechanisms associated with adverse respiratory outcomes, the development of in vitro surrogates of cannabis smoke exposure is needed. Therefore, we developed a standardized protocol for the generation of cannabis smoke extract (CaSE) to investigate its effect on cellular mechanisms in vitro. First, we determined the concentration of Δ9-THC, one of the major cannabinoids, by ELISA and found that addition of methanol to the cell culture media during generation of the aqueous smoke extract significantly increased the amount of Δ9-THC. We also observed by LC-MS/MS that CaSE preparation with methanol contains CBD. Using a functional assay in cells for CB1 receptors, the major target of cannabinoids, we found that this CaSE contains Δ9-THC which activates CB1 receptors. Finally, this standardized preparation of CaSE induces an inflammatory response in human lung fibroblasts. This study provides an optimized protocol for aqueous CaSE preparation containing biologically active cannabinoids that can be used for in vitro experimentation of cannabis smoke and its potential impact on various indices of pulmonary health.
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Affiliation(s)
- Noof Aloufi
- Meakins-Christie Laboratories, Montreal, QC, Canada.,Translational Research in Respiratory Diseases Program at the Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Pathology, McGill University, Montreal, QC, Canada.,Department of Medical Laboratory Technology, Applied Medical Science, Taibah University, Medina, Saudi Arabia
| | - Yoon Namkung
- Department of Medicine, McGill University, Montreal, QC, Canada
| | - Hussein Traboulsi
- Meakins-Christie Laboratories, Montreal, QC, Canada.,Translational Research in Respiratory Diseases Program at the Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Medicine, McGill University, Montreal, QC, Canada
| | - Emily T Wilson
- Meakins-Christie Laboratories, Montreal, QC, Canada.,Translational Research in Respiratory Diseases Program at the Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, QC, Canada
| | - Stephane A Laporte
- Department of Medicine, McGill University, Montreal, QC, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, QC, Canada
| | - Barbara L F Kaplan
- Department of Comparative Biomedical Sciences, Mississippi State University, Mississippi State, MS, United States
| | - Matthew K Ross
- Department of Comparative Biomedical Sciences, Mississippi State University, Mississippi State, MS, United States
| | - Parameswaran Nair
- Department of Medicine, McMaster University and St Joseph's Healthcare, Hamilton, ON, Canada
| | - David H Eidelman
- Meakins-Christie Laboratories, Montreal, QC, Canada.,Translational Research in Respiratory Diseases Program at the Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Medicine, McGill University, Montreal, QC, Canada
| | - Carolyn J Baglole
- Meakins-Christie Laboratories, Montreal, QC, Canada.,Translational Research in Respiratory Diseases Program at the Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Pathology, McGill University, Montreal, QC, Canada.,Department of Medicine, McGill University, Montreal, QC, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, QC, Canada
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3
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Ahmed SS, Al Nohair SF, Abdulmonem WA, Alhomaidan HT, Rasheed N, Ismail MS, Albatanony MA, Rasheed Z. Honey polyphenolic fraction inhibits cyclooxygenase-2 expression via upregulation of microRNA-26a-5p expression in pancreatic islets. EUR J INFLAMM 2022. [DOI: 10.1177/20587392221076473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objectives Honey total polyphenolic fraction (HTPF) is reported to have anti-disease potential, however the role of HTPF in the regulation of microRNAs (miRNAs) has never been investigated. This study was undertaken to investigate the potential of HTPF against inflammation via regulation of miRNAs in pancreatic islets of Langerhans. Methods Pancreatic islets were isolated from C57BL/6 mice and HTPF was purified from honey. Bioinformatics algorithms were used to determine miRNA target genes. Expression of miRNA and mRNA was determined using their specific taqman assays. Pairing between miRNA and 3′ untranslated region (3′UTR) of mRNA was confirmed using luciferase reporter clone containing the 3′UTR of mRNA sequences and results were verified by transfection of mouse pancreatic β-cell line Min6 with miRNA inhibitors. Results The data showed that mmu-miR-26a-5p is a direct regulator of cyclooxygenase-2 (COX-2) expression and HTPF inhibits COX-2 expression or prostaglandin E2 (PGE2) production via up-regulating mmu-miR-26a-5p expression. Transfection of islets with anti-miR-26a-5p significantly enhanced COX-2 expression and PGE2 production ( p < .01), while HTPF treatment significantly inhibited anti-miR-26a-5p transfection-induced COX-2 expression or PGE2 production ( p < .05). These findings were further verified in pancreatic β-cells Min6. Moreover, the data also determined that HTPF also inhibits glucose-induced nuclear transcription factor (NF)-κB activity. Conclusion HTPF suppresses glucose-induced PGE2 production and activation of NF-κB via negative regulation of COX-2 and mmu-miR26a-5p. These novel pharmacological actions of HTPF on glucose-stimulated pancreatic islets provide new suggestions that HTPF or HTPF-derived compounds inhibit glucose induced inflammation in pancreas by up-regulating the expression of microRNAs.
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Affiliation(s)
- Syed Suhail Ahmed
- Department of Medical Microbiology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Sultan Fahad Al Nohair
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Waleed Al Abdulmonem
- Department of Pathology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Homaidan T Alhomaidan
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Naila Rasheed
- Department of Medical Biochemistry, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Mohamed S Ismail
- Department of Nutrition and Food Sciences, Menoufia University, Shebin El-Kom, Egypt
| | - Manal A Albatanony
- Department of Family Medicine, College of Medicine, Qassim University, Unaizah, Saudi Arabia
| | - Zafar Rasheed
- Department of Medical Biochemistry, College of Medicine, Qassim University, Buraidah, Saudi Arabia
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4
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Aloufi N, Alluli A, Eidelman DH, Baglole CJ. Aberrant Post-Transcriptional Regulation of Protein Expression in the Development of Chronic Obstructive Pulmonary Disease. Int J Mol Sci 2021; 22:ijms222111963. [PMID: 34769392 PMCID: PMC8584689 DOI: 10.3390/ijms222111963] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 02/07/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is an incurable and prevalent respiratory disorder that is characterized by chronic inflammation and emphysema. COPD is primarily caused by cigarette smoke (CS). CS alters numerous cellular processes, including the post-transcriptional regulation of mRNAs. The identification of RNA-binding proteins (RBPs), microRNAs (miRNAs), and long non-coding RNAs (lncRNAs) as main factors engaged in the regulation of RNA biology opens the door to understanding their role in coordinating physiological cellular processes. Dysregulation of post-transcriptional regulation by foreign particles in CS may lead to the development of diseases such as COPD. Here we review current knowledge about post-transcriptional events that may be involved in the pathogenesis of COPD.
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Affiliation(s)
- Noof Aloufi
- Department of Pathology, McGill University, Montreal, QC H3A 2B4, Canada; (N.A.); (A.A.)
- Department of Medical Laboratory Technology, Applied Medical Science, Taibah University, Universities Road, Medina P.O. Box 344, Saudi Arabia
| | - Aeshah Alluli
- Department of Pathology, McGill University, Montreal, QC H3A 2B4, Canada; (N.A.); (A.A.)
| | - David H. Eidelman
- Department of Medicine, McGill University, Montreal, QC H4A 3J1, Canada;
| | - Carolyn J. Baglole
- Department of Pathology, McGill University, Montreal, QC H3A 2B4, Canada; (N.A.); (A.A.)
- Department of Medicine, McGill University, Montreal, QC H4A 3J1, Canada;
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QC H3G 1Y6, Canada
- Correspondence:
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5
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Gong Z, Huang W, Wang B, Liang N, Long S, Li W, Zhou Q. Interplay between cyclooxygenase‑2 and microRNAs in cancer (Review). Mol Med Rep 2021; 23:347. [PMID: 33760116 PMCID: PMC7974460 DOI: 10.3892/mmr.2021.11986] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 02/23/2021] [Indexed: 02/06/2023] Open
Abstract
Tumor‑associated inflammation and aberrantly expressed biomarkers have been demonstrated to play crucial roles in the cancer microenvironment. Cyclooxygenase‑2 (COX‑2), a prominent inflammatory factor, is highly expressed in tumor cells and contributes to tumor growth, recurrence and metastasis. Overexpression of COX‑2 may occur at both transcriptional and post‑transcriptional levels. Thus, an improved understanding of the regulatory mechanisms of COX‑2 can facilitate the development of novel antitumor therapies. MicroRNAs (miRNAs) are a group of small non‑coding RNAs that act as translation repressors of target mRNAs, and play vital roles in regulating cancer development and progression. The present review discusses the association between miRNAs and COX‑2 expression in different types of cancer. Understanding the regulatory role of miRNAs in COX‑2 post‑transcription can provide novel insight for suppressing COX‑2 expression via gene silencing mechanisms, which offer new perspectives and future directions for the development of novel COX‑2 selective inhibitors based on miRNAs.
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Affiliation(s)
- Zexiong Gong
- Department of Anesthesiology, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421002, P.R. China
| | - Weiguo Huang
- Cancer Research Institute, Medical College of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Baiyun Wang
- Department of Anesthesiology, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421002, P.R. China
| | - Na Liang
- Department of Anesthesiology, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421002, P.R. China
| | - Songkai Long
- Department of Anesthesiology, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421002, P.R. China
| | - Wanjun Li
- Department of Anesthesiology, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421002, P.R. China
| | - Qier Zhou
- Department of Anesthesiology, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421002, P.R. China
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6
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Guerrina N, Traboulsi H, Rico de Souza A, Bossé Y, Thatcher TH, Robichaud A, Ding J, Li PZ, Simon L, Pareek S, Bourbeau J, Tan WC, Benedetti A, Obeidat M, Sin DD, Brandsma CA, Nickle DC, Sime PJ, Phipps RP, Nair P, Zago M, Hamid Q, Smith BM, Eidelman DH, Baglole CJ. Aryl hydrocarbon receptor deficiency causes the development of chronic obstructive pulmonary disease through the integration of multiple pathogenic mechanisms. FASEB J 2021; 35:e21376. [PMID: 33605487 DOI: 10.1096/fj.202002350r] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/17/2020] [Accepted: 01/04/2021] [Indexed: 01/26/2023]
Abstract
Emphysema, a component of chronic obstructive pulmonary disease (COPD), is characterized by irreversible alveolar destruction that results in a progressive decline in lung function. This alveolar destruction is caused by cigarette smoke, the most important risk factor for COPD. Only 15%-20% of smokers develop COPD, suggesting that unknown factors contribute to disease pathogenesis. We postulate that the aryl hydrocarbon receptor (AHR), a receptor/transcription factor highly expressed in the lungs, may be a new susceptibility factor whose expression protects against COPD. Here, we report that Ahr-deficient mice chronically exposed to cigarette smoke develop airspace enlargement concomitant with a decline in lung function. Chronic cigarette smoke exposure also increased cleaved caspase-3, lowered SOD2 expression, and altered MMP9 and TIMP-1 levels in Ahr-deficient mice. We also show that people with COPD have reduced expression of pulmonary and systemic AHR, with systemic AHR mRNA levels positively correlating with lung function. Systemic AHR was also lower in never-smokers with COPD. Thus, AHR expression protects against the development of COPD by controlling interrelated mechanisms involved in the pathogenesis of this disease. This study identifies the AHR as a new, central player in the homeostatic maintenance of lung health, providing a foundation for the AHR as a novel therapeutic target and/or predictive biomarker in chronic lung disease.
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Affiliation(s)
- Necola Guerrina
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Pathology, McGill University, Montreal, QC, Canada
| | - Hussein Traboulsi
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | | | - Yohan Bossé
- Institut universitaire de cardiologie et de pneumologie de Québec, Department of Molecular Medicine, Laval University, Quebec City, QC, Canada
| | - Thomas H Thatcher
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | | | - Jun Ding
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Medicine, McGill University, Montreal, QC, Canada
| | - Pei Z Li
- Respiratory Epidemiology and Clinical Research Unit, McGill University Health Centre, Montreal, QC, Canada
| | - Leora Simon
- Department of Medicine, McGill University, Montreal, QC, Canada
| | - Swati Pareek
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Pathology, McGill University, Montreal, QC, Canada
| | - Jean Bourbeau
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Medicine, McGill University, Montreal, QC, Canada.,Respiratory Epidemiology and Clinical Research Unit, McGill University Health Centre, Montreal, QC, Canada
| | - Wan C Tan
- The University of British Columbia (UBC) James Hogg Research Centre, UBC, Vancouver, BC, Canada
| | - Andrea Benedetti
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Medicine, McGill University, Montreal, QC, Canada.,Respiratory Epidemiology and Clinical Research Unit, McGill University Health Centre, Montreal, QC, Canada.,Department of Epidemiology, McGill University, Montreal, QC, Canada.,Department of Biostatistics, McGill University, Montreal, QC, Canada.,Department of Occupational Health, McGill University, Montreal, QC, Canada
| | - Ma'en Obeidat
- Centre for Heart Lung Innovation, St. Paul's Hospital, UBC, Vancouver, BC, Canada.,Division of Respiratory Medicine, UBC, Vancouver, BC, Canada
| | - Don D Sin
- Centre for Heart Lung Innovation, St. Paul's Hospital, UBC, Vancouver, BC, Canada.,Division of Respiratory Medicine, UBC, Vancouver, BC, Canada
| | - Corry-Anke Brandsma
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Patricia J Sime
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Richard P Phipps
- Department of Environmental Medicine, University of Rochester, Rochester, NY, USA
| | - Parameswaran Nair
- Department of Medicine, McMaster University & St Joseph's Healthcare, Hamilton, ON, Canada
| | | | - Qutayba Hamid
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Medicine, McGill University, Montreal, QC, Canada.,University of Sharjah College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Benjamin M Smith
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Medicine, McGill University, Montreal, QC, Canada.,Respiratory Epidemiology and Clinical Research Unit, McGill University Health Centre, Montreal, QC, Canada
| | | | - Carolyn J Baglole
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Department of Pathology, McGill University, Montreal, QC, Canada.,Department of Medicine, McGill University, Montreal, QC, Canada.,Department of Pharmacology & Therapeutics, McGill University, Montreal, QC, Canada
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7
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Cañas JA, Rodrigo-Muñoz JM, Sastre B, Gil-Martinez M, Redondo N, del Pozo V. MicroRNAs as Potential Regulators of Immune Response Networks in Asthma and Chronic Obstructive Pulmonary Disease. Front Immunol 2021; 11:608666. [PMID: 33488613 PMCID: PMC7819856 DOI: 10.3389/fimmu.2020.608666] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 11/23/2020] [Indexed: 12/13/2022] Open
Abstract
Chronic respiratory diseases (CRDs) are an important factor of morbidity and mortality, accounting for approximately 6% of total deaths worldwide. The main CRDs are asthma and chronic obstructive pulmonary disease (COPD). These complex diseases have different triggers including allergens, pollutants, tobacco smoke, and other risk factors. It is important to highlight that although CRDs are incurable, various forms of treatment improve shortness of breath and quality of life. The search for tools that can ensure accurate diagnosis and treatment is crucial. MicroRNAs (miRNAs) are small non-coding RNAs and have been described as promising diagnostic and therapeutic biomarkers for CRDs. They are implicated in multiple processes of asthma and COPD, regulating pathways associated with inflammation, thereby showing that miRNAs are critical regulators of the immune response. Indeed, miRNAs have been found to be deregulated in several biofluids (sputum, bronchoalveolar lavage, and serum) and in both structural lung and immune cells of patients in comparison to healthy subjects, showing their potential role as biomarkers. Also, miRNAs play a part in the development or termination of histopathological changes and comorbidities, revealing the complexity of miRNA regulation and opening up new treatment possibilities. Finally, miRNAs have been proposed as prognostic tools in response to both conventional and biologic treatments for asthma or COPD, and miRNA-based treatment has emerged as a potential approach for clinical intervention in these respiratory diseases; however, this field is still in development. The present review applies a systems biology approach to the understanding of miRNA regulatory networks in asthma and COPD, summarizing their roles in pathophysiology, diagnosis, and treatment.
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Affiliation(s)
- José A. Cañas
- Immunoallergy Laboratory, Immunology Department, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD), Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - José M. Rodrigo-Muñoz
- Immunoallergy Laboratory, Immunology Department, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD), Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Beatriz Sastre
- Immunoallergy Laboratory, Immunology Department, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD), Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Marta Gil-Martinez
- Immunoallergy Laboratory, Immunology Department, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD), Madrid, Spain
| | - Natalia Redondo
- Immunoallergy Laboratory, Immunology Department, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD), Madrid, Spain
| | - Victoria del Pozo
- Immunoallergy Laboratory, Immunology Department, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJD), Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
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8
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Jiang Y, Huang Y, Du Y, Zhao Y, Ren J, Ma S, Wu C. Identification of Prognostic Genes and Pathways in Lung Adenocarcinoma Using a Bayesian Approach. Cancer Inform 2020; 16:1176935116684825. [PMID: 33354107 PMCID: PMC7736146 DOI: 10.1177/1176935116684825] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 11/24/2016] [Indexed: 01/02/2023] Open
Abstract
Lung cancer is the leading cause of cancer-associated mortality in the United States and the world. Adenocarcinoma, the most common subtype of lung cancer, is generally diagnosed at the late stage with poor prognosis. In the past, extensive effort has been devoted to elucidating lung cancer pathogenesis and pinpointing genes associated with survival outcomes. As the progression of lung cancer is a complex process that involves coordinated actions of functionally associated genes from cancer-related pathways, there is a growing interest in simultaneous identification of both prognostic pathways and important genes within those pathways. In this study, we analyse The Cancer Genome Atlas lung adenocarcinoma data using a Bayesian approach incorporating the pathway information as well as the interconnections among genes. The top 11 pathways have been found to play significant roles in lung adenocarcinoma prognosis, including pathways in mitogen-activated protein kinase signalling, cytokine-cytokine receptor interaction, and ubiquitin-mediated proteolysis. We have also located key gene signatures such as RELB, MAP4K1, and UBE2C. These results indicate that the Bayesian approach may facilitate discovery of important genes and pathways that are tightly associated with the survival of patients with lung adenocarcinoma.
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Affiliation(s)
- Yu Jiang
- Division of Epidemiology, Biostatistics
and Environmental Health, School of Public Health, University of Memphis, Memphis,
TN, USA
- Cooperative Studies Program, VA
Connecticut Healthcare System, West Haven, CT, USA
| | - Yuan Huang
- Cooperative Studies Program, VA
Connecticut Healthcare System, West Haven, CT, USA
- Department of Biostatistics, Yale
University, New Haven, CT, USA
| | - Yinhao Du
- Department of Statistics, Kansas State
University, Manhattan, KS, USA
| | - Yinjun Zhao
- Department of Biostatistics, Yale
University, New Haven, CT, USA
| | - Jie Ren
- Department of Statistics, Kansas State
University, Manhattan, KS, USA
| | - Shuangge Ma
- Cooperative Studies Program, VA
Connecticut Healthcare System, West Haven, CT, USA
- Department of Biostatistics, Yale
University, New Haven, CT, USA
| | - Cen Wu
- Department of Statistics, Kansas State
University, Manhattan, KS, USA
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9
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Guerrina N, Aloufi N, Shi F, Prasade K, Mehrotra C, Traboulsi H, Matthews J, Eidelman DH, Hamid Q, Baglole CJ. The aryl hydrocarbon receptor reduces LC3II expression and controls endoplasmic reticulum stress. Am J Physiol Lung Cell Mol Physiol 2020; 320:L339-L355. [PMID: 33236922 DOI: 10.1152/ajplung.00122.2020] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor whose physiological function is poorly understood. The AhR is highly expressed in barrier organs such as the skin, intestine, and lung. The lungs are continuously exposed to environmental pollutants such as cigarette smoke (CS) that can induce cell death mechanisms such as apoptosis, autophagy, and endoplasmic reticulum (ER) stress. CS also contains toxicants that are AhR ligands. We have previously shown that the AhR protects against apoptosis, but whether the AhR also protects against autophagy or ER stress is not known. Using cigarette smoke extract (CSE) as our in vitro surrogate of environmental tobacco exposure, we first assessed the conversion of LC3I to LC3II, a classic feature of both autophagic and ER stress-mediated cell death pathways. LC3II was elevated in CSE-exposed lung structural cells [mouse lung fibroblasts (MLFs), MLE12 and A549 cells] when AhR was absent. However, this heightened LC3II expression could not be explained by increased expression of key autophagy genes (Gabarapl1, Becn1, Map1lc3b), upregulation of upstream autophagic machinery (Atg5-12, Atg3), or impaired autophagic flux, suggesting that LC3II may be autophagy independent. This was further supported by the absence of autophagosomes in Ahr-/- lung cells. However, Ahr-/- lung cells had widespread ER dilation, elevated expression of the ER stress markers CHOP and GADD34, and an accumulation of ubiquitinated proteins. These findings collectively illustrate a novel role for the AhR in attenuating ER stress by a mechanism that may be autophagy independent.
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Affiliation(s)
- Necola Guerrina
- Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada.,Department of Pathology, McGill University, Montreal, Quebec, Canada
| | - Noof Aloufi
- Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada.,Department of Pathology, McGill University, Montreal, Quebec, Canada
| | - Fangyi Shi
- Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada.,Department of Pathology, McGill University, Montreal, Quebec, Canada
| | - Kashmira Prasade
- Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada
| | - Caitlin Mehrotra
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada
| | - Hussein Traboulsi
- Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada.,Department of Medicine, McGill University, Montreal, Quebec, Canada
| | - Jason Matthews
- Department of Nutrition, University of Oslo, Oslo, Norway.,Department of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario, Canada
| | - David H Eidelman
- Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada.,Department of Medicine, McGill University, Montreal, Quebec, Canada
| | - Qutayba Hamid
- Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada.,Department of Medicine, McGill University, Montreal, Quebec, Canada.,College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Carolyn J Baglole
- Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada.,Department of Pathology, McGill University, Montreal, Quebec, Canada.,Department of Medicine, McGill University, Montreal, Quebec, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada
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10
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Shi S, Li H. Overexpressed microRNA-140 inhibits pulmonary fibrosis in interstitial lung disease via the Wnt signaling pathway by downregulating osteoglycin. Am J Physiol Cell Physiol 2020; 319:C895-C905. [PMID: 32755451 DOI: 10.1152/ajpcell.00479.2019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Interstitial lung disease (ILD) comprises of a group of diffuse parenchymal lung disorders that are strongly associated with substantial morbidity and mortality. Previous studies have highlighted the therapeutic significance of microRNAs (miRNAs) in the treatment of ILD. Thus this study aims to investigate the mechanism by which miR-140 affects ILD through the regulation of osteoglycin (OGN)-Wnt signaling pathway. Gene expression microarray analysis was performed to screen ILD-related differentially expressed genes and miRNAs that regulated OGN. The targeting relationship between miR-140 and OGN was verified. Ectopic expression and knockdown experiments were performed in lung fibroblasts to explore the potential mechanism of action of miR-140 in ILD. The expression of miR-140, OGN, as well as Wnt- and pulmonary fibrosis-related factors, was determined by RT-qPCR and Western blot analysis. In addition, cell viability and apoptosis were examined. OGN was found to be negatively regulated by miR-140. The ectopic expression of miR-140 and OGN silencing resulted in increased lung fibroblast apoptosis and Wnt3a expression, along with reduced proliferation and pulmonary fibrosis. Our results also revealed that miR-140 decreased OGN, thereby activating the Wnt signaling pathway, which was observed to further affect the expression of genes associated with the progression of pulmonary fibrosis in mouse fibroblasts. In conclusion, the key findings from our study suggest that overexpressed miR-140 suppresses ILD development via the Wnt signaling pathway by downregulating OGN, which could potentially be used as a therapeutic target for ILD.
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Affiliation(s)
- Songtao Shi
- Department of Chest Surgery, Linyi People's Hospital, Linyi, People's Republic of China
| | - Hongli Li
- Operation Room, Linyi People's Hospital, Linyi, People's Republic of China
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11
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Tan BWQ, Sim WL, Cheong JK, Kuan WS, Tran T, Lim HF. MicroRNAs in chronic airway diseases: Clinical correlation and translational applications. Pharmacol Res 2020; 160:105045. [PMID: 32590100 DOI: 10.1016/j.phrs.2020.105045] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 12/19/2022]
Abstract
MicroRNAs (miRNAs) are short single-stranded RNAs that have pivotal roles in disease pathophysiology through transcriptional and translational modulation of important genes. It has been implicated in the development of many diseases, such as stroke, cardiovascular conditions, cancers and inflammatory airway diseases. There is recent evidence that miRNAs play important roles in the pathogenesis of asthma and chronic obstructive pulmonary disease (COPD), and could help to distinguish between T2-low (non-eosinophilic, steroid-insensitive) versus T2-high (eosinophilic, steroid-sensitive) disease endotypes. As these are the two most prevalent chronic respiratory diseases globally, with rising disease burden, miRNA research might lead to the development of new diagnostic and therapeutic targets. Research involving miRNAs in airway disease is challenging because: (i) asthma and COPD are heterogeneous inflammatory airway diseases; there are overlapping but distinct inter- and intra-disease differences in the immunological pathophysiology, (ii) there exists more than 2000 known miRNAs and a single miRNA can regulate multiple targets, (iii) differential effects of miRNAs could be present in different cellular subtypes and tissues, and (iv) dysregulated miRNA expression might be a direct consequence of an indirect effect of airway disease onset or progression. As miRNAs are actively secreted in fluids and remain relatively stable, they have the potential for biomarker development and therapeutic targets. In this review, we summarize the preclinical data on potential miRNA biomarkers that mediate different pathophysiological mechanisms in airway disease. We discuss the framework for biomarker development using miRNA and highlight the need for careful patient characterization and endotyping in the screening and validation cohorts, profiling both airway and blood samples to determine the biological fluids of choice in different disease states or severity, and adopting an untargeted approach. Collaboration between the various stakeholders - pharmaceutical companies, laboratory professionals and clinician-scientists is crucial to reduce the difficulties and cost required to bring miRNA research into the translational stage for airway diseases.
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Affiliation(s)
- Bryce W Q Tan
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Wei Liang Sim
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Jit Kong Cheong
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Win Sen Kuan
- Department of Emergency Medicine, National University Hospital, National University Health System, Singapore
| | - Thai Tran
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Hui Fang Lim
- Division of Respiratory & Critical Care Medicine, Department of Medicine, National University Hospital, National University Health System, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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12
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Traboulsi H, Cherian M, Abou Rjeili M, Preteroti M, Bourbeau J, Smith BM, Eidelman DH, Baglole CJ. Inhalation Toxicology of Vaping Products and Implications for Pulmonary Health. Int J Mol Sci 2020; 21:E3495. [PMID: 32429092 PMCID: PMC7278963 DOI: 10.3390/ijms21103495] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/28/2020] [Accepted: 05/12/2020] [Indexed: 12/17/2022] Open
Abstract
E-cigarettes have a liquid that may contain flavors, solvents, and nicotine. Heating this liquid generates an aerosol that is inhaled into the lungs in a process commonly referred to as vaping. E-cigarette devices can also contain cannabis-based products including tetrahydrocannabinol (THC), the psychoactive component of cannabis (marijuana). E-cigarette use has rapidly increased among current and former smokers as well as youth who have never smoked. The long-term health effects are unknown, and emerging preclinical and clinical studies suggest that e-cigarettes may not be harmless and can cause cellular alterations analogous to traditional tobacco smoke. Here, we review the historical context and the components of e-cigarettes and discuss toxicological similarities and differences between cigarette smoke and e-cigarette aerosol, with specific reference to adverse respiratory outcomes. Finally, we outline possible clinical disorders associated with vaping on pulmonary health and the recent escalation of acute lung injuries, which led to the declaration of the vaping product use-associated lung injury (EVALI) outbreak. It is clear there is much about vaping that is not understood. Consequently, until more is known about the health effects of vaping, individual factors that need to be taken into consideration include age, current and prior use of combustible tobacco products, and whether the user has preexisting lung conditions such as asthma and chronic obstructive pulmonary disease (COPD).
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Affiliation(s)
- Hussein Traboulsi
- Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada; (H.T.); (M.A.R.); (M.P.); (J.B.); (B.M.S.)
| | - Mathew Cherian
- Department of Medicine, McGill University, Montreal, QC H4A 3J1, Canada; (M.C.); (D.H.E.)
| | - Mira Abou Rjeili
- Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada; (H.T.); (M.A.R.); (M.P.); (J.B.); (B.M.S.)
- Respiratory Epidemiology and Clinical Research Unit, McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Matthew Preteroti
- Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada; (H.T.); (M.A.R.); (M.P.); (J.B.); (B.M.S.)
- Department of Pathology, McGill University, Montreal, QC H3A 2B4, Canada
| | - Jean Bourbeau
- Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada; (H.T.); (M.A.R.); (M.P.); (J.B.); (B.M.S.)
- Respiratory Epidemiology and Clinical Research Unit, McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Benjamin M. Smith
- Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada; (H.T.); (M.A.R.); (M.P.); (J.B.); (B.M.S.)
- Department of Medicine, McGill University, Montreal, QC H4A 3J1, Canada; (M.C.); (D.H.E.)
- Respiratory Epidemiology and Clinical Research Unit, McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - David H. Eidelman
- Department of Medicine, McGill University, Montreal, QC H4A 3J1, Canada; (M.C.); (D.H.E.)
| | - Carolyn J. Baglole
- Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada; (H.T.); (M.A.R.); (M.P.); (J.B.); (B.M.S.)
- Department of Medicine, McGill University, Montreal, QC H4A 3J1, Canada; (M.C.); (D.H.E.)
- Department of Pathology, McGill University, Montreal, QC H3A 2B4, Canada
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QC H3G 1Y6, Canada
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13
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Zong D, Liu X, Li J, Ouyang R, Chen P. The role of cigarette smoke-induced epigenetic alterations in inflammation. Epigenetics Chromatin 2019; 12:65. [PMID: 31711545 PMCID: PMC6844059 DOI: 10.1186/s13072-019-0311-8] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 10/23/2019] [Indexed: 12/19/2022] Open
Abstract
Background Exposure to cigarette smoke (CS) is a major threat to human health worldwide. It is well established that smoking increases the risk of respiratory diseases, cardiovascular diseases and different forms of cancer, including lung, liver, and colon. CS-triggered inflammation is considered to play a central role in various pathologies by a mechanism that stimulates the release of pro-inflammatory cytokines. During this process, epigenetic alterations are known to play important roles in the specificity and duration of gene transcription. Main text Epigenetic alterations include three major modifications: DNA modifications via methylation; various posttranslational modifications of histones, namely, methylation, acetylation, phosphorylation, and ubiquitination; and non-coding RNA sequences. These modifications work in concert to regulate gene transcription in a heritable fashion. The enzymes that regulate these epigenetic modifications can be activated by smoking, which further mediates the expression of multiple inflammatory genes. In this review, we summarize the current knowledge on the epigenetic alterations triggered by CS and assess how such alterations may affect smoking-mediated inflammatory responses. Conclusion The recognition of the molecular mechanisms of the epigenetic changes in abnormal inflammation is expected to contribute to the understanding of the pathophysiology of CS-related diseases such that novel epigenetic therapies may be identified in the near future.
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Affiliation(s)
- Dandan Zong
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Xiangming Liu
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Jinhua Li
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Ruoyun Ouyang
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China
| | - Ping Chen
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China. .,Research Unit of Respiratory Disease, Central South University, Changsha, 410011, Hunan, China.
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14
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Seet LF, Toh LZ, Chu SWL, Wong TT. RelB regulates basal and proinflammatory induction of conjunctival CCL2. Ocul Immunol Inflamm 2019; 29:29-42. [PMID: 31618101 DOI: 10.1080/09273948.2019.1662060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Purpose: This study investigated the involvement of NF-kB in regulating postoperative conjunctival inflammation.Methods: Experimental surgery was performed as described for the mouse model of conjunctival scarring. Expression of NF-κB in postoperative conjunctival tissues or conjunctival fibroblasts were assessed by real-time PCR, immunoblotting and immunofluorescence analyses. Downregulation of RelB was achieved using small interfering RNA. Cellular cytokine secretion was determined using multiplex cytokine assay.Results: RelB was the most highly induced member of the NF-kB family on day 2 post-surgery. Elevated RelB may be found associated with vimentin-positive cells and fibroblasts in vivo and in vitro. In conjunctival fibroblasts, RelB may be induced by TNF-α but not TGF-β2 while its silencing caused selective induction of CCL2 secretion by both basal and TNF-α-stimulated fibroblasts.Conclusions: High RelB induction in the inflammatory phase and the selective modulation of CCL2 suggest a specific anti-inflammatory role for RelB in the postoperative conjunctiva.
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Affiliation(s)
- Li-Fong Seet
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, Singapore.,Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Duke-NUS Medical School, Singapore
| | - Li Zhen Toh
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, Singapore
| | - Stephanie W L Chu
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, Singapore
| | - Tina T Wong
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, Singapore.,Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Duke-NUS Medical School, Singapore.,Glaucoma Service, Singapore National Eye Center, Singapore.,School of Materials Science and Engineering, Nanyang Technological University, Singapore
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15
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Pareek S, Traboulsi H, Allard B, Rico de Souza A, Eidelman DH, Baglole CJ. Pulmonary neutrophilia caused by absence of the NF-κB member RelB is dampened by exposure to cigarette smoke. Mol Immunol 2019; 114:395-409. [PMID: 31476634 DOI: 10.1016/j.molimm.2019.08.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 07/23/2019] [Accepted: 08/14/2019] [Indexed: 01/01/2023]
Abstract
Inflammation is a response to injury and infection. Although protective under physiological conditions, excessive and persistent inflammation is linked to numerous diseases. As the lungs are continuously exposed to the external environment, the respiratory system is particularly liable to damage from inflammation. RelB is a member of the non-canonical NF-κB pathway that may control lung inflammation caused by cigarette smoke (CS), a leading cause of morbidity and mortality worldwide. Our lab has previously shown that RelB protects against CS-induced inflammation in vitro, leading us to hypothesize that RelB would protect against acute CS-induced pulmonary inflammation in vivo. We exposed wild-type (Relb+/+) and RelB-deficient mice (Relb-/-) mice to room air or to CS and found that CS exposure caused a sustained decrease in pulmonary granulocytes in Relb-/- mice that was predominated by a decrease in neutrophils. Pulmonary inflammation caused by other irritants, including chlorine, ovalbumin (OVA; to mimic features of asthma) and lipopolysaccharide (LPS) was not controlled by RelB. Differential cytokine analysis suggests that alterations in chemotactic cytokines do not fully account for the CS-specific decrease in neutrophils in Relb-/- mice. Flow cytometric analysis of the bronchoalveolar lavage and bone marrow cells also reveal that it is unlikely that the sustained decrease is caused by excessive cell death or decreased hematopoiesis from the bone marrow. Overall, our results indicate that RelB regulates acute CS-induced pulmonary inflammation. Understanding how RelB regulates CS-induced inflammation may potentiate the discovery of new therapeutic strategies for many of the inflammatory diseases caused by CS.
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Affiliation(s)
- Swati Pareek
- Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada; Departments of Pathology, McGill University, Montreal, Quebec, Canada
| | - Hussein Traboulsi
- Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Benoit Allard
- Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada; Medicine, McGill University, Montreal, Quebec, Canada
| | - Angela Rico de Souza
- Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | | | - Carolyn J Baglole
- Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada; Departments of Pathology, McGill University, Montreal, Quebec, Canada; Medicine, McGill University, Montreal, Quebec, Canada; Pharmacology & Therapeutics, McGill University, Montreal, Quebec, Canada.
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16
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Morris G, Maes M, Berk M, Puri BK. Myalgic encephalomyelitis or chronic fatigue syndrome: how could the illness develop? Metab Brain Dis 2019; 34:385-415. [PMID: 30758706 PMCID: PMC6428797 DOI: 10.1007/s11011-019-0388-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 01/23/2019] [Indexed: 12/19/2022]
Abstract
A model of the development and progression of chronic fatigue syndrome (myalgic encephalomyelitis), the aetiology of which is currently unknown, is put forward, starting with a consideration of the post-infection role of damage-associated molecular patterns and the development of chronic inflammatory, oxidative and nitrosative stress in genetically predisposed individuals. The consequences are detailed, including the role of increased intestinal permeability and the translocation of commensal antigens into the circulation, and the development of dysautonomia, neuroinflammation, and neurocognitive and neuroimaging abnormalities. Increasing levels of such stress and the switch to immune and metabolic downregulation are detailed next in relation to the advent of hypernitrosylation, impaired mitochondrial performance, immune suppression, cellular hibernation, endotoxin tolerance and sirtuin 1 activation. The role of chronic stress and the development of endotoxin tolerance via indoleamine 2,3-dioxygenase upregulation and the characteristics of neutrophils, monocytes, macrophages and T cells, including regulatory T cells, in endotoxin tolerance are detailed next. Finally, it is shown how the immune and metabolic abnormalities of chronic fatigue syndrome can be explained by endotoxin tolerance, thus completing the model.
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Affiliation(s)
- Gerwyn Morris
- IMPACT Strategic Research Centre, School of Medicine, Barwon Health, Deakin University, Geelong, Victoria, Australia
| | - Michael Maes
- IMPACT Strategic Research Centre, School of Medicine, Barwon Health, Deakin University, Geelong, Victoria, Australia
- Department of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Michael Berk
- IMPACT Strategic Research Centre, School of Medicine, Barwon Health, Deakin University, Geelong, Victoria, Australia
- Department of Psychiatry, Royal Melbourne Hospital, University of Melbourne, Parkville, Victoria, Australia
- Florey Institute for Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
- Orygen, The National Centre of Excellence in Youth Mental Health, Parkville, Victoria, Australia
| | - Basant K Puri
- Department of Medicine, Imperial College London, Hammersmith Hospital, London, England, W12 0HS, UK.
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17
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Zhang W, Xiao J, Lu X, Liu T, Jin X, Xiao Y, He X. PVT1 (rs13281615) and miR-146a (rs2910164) polymorphisms affect the prognosis of colon cancer by regulating COX2 expression and cell apoptosis. J Cell Physiol 2019; 234:17538-17548. [PMID: 30820968 DOI: 10.1002/jcp.28377] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/21/2019] [Accepted: 01/24/2019] [Indexed: 01/05/2023]
Abstract
In this study, we aimed to investigate the potential correlation between rs13281615/rs2910164 polymorphisms and the prognosis of colon cancer (CC). Taqman was utilized to genotype the rs13281615/rs2910164 polymorphisms in recruited subjects. Kaplan-Meier survival curves were calculated to study the prognostic values of different genotypes of rs13281615/rs2910164 polymorphisms. Real-time polymerase chain reaction, enzyme-linked immunosorbent assay, immunohistochemistry, and terminal deoxynucleotidyl transferase dUTP nick-end labeling assays were conducted to establish a potential signaling pathway underlying the role of rs13281615/rs2910164 polymorphisms, whereas bioinformatics analysis and luciferase reporter assays were performed to identify plasmacytoma variant translocation 1 (PVT1) and cyclooxygenase-2 (COX2) as targets of microRNA-146a (miR-146a). No significant difference was observed in respect to clinical characteristics among subjects with different genotypes. However, patients genotyped as GG/CC + GC showed the lowest chance of survival, whereas patients of GA + AA/GG genotype showed the highest chance of survival. Moreover, the relative expressions of PVT1, prostaglandin E2 (PGE2), and COX2 were the lowest and the relative expression of miR-146a was the highest in GA + AA/GG subjects, validating the roles of PVT1, miR-146a, and COX2 in CC. In addition, both PVT1 and COX2 were identified as virtual targets of miR-146a, and the luciferase activities of cells cotransfected with wild-type PVT1/COX2 and miR-146a mimics were significantly reduced. Moreover, the presence of PVT1 decreased the level of miR-146a whereas increasing the messenger RNA and protein levels of COX2, thus establishing a PVT1/miR-146a/COX2 signaling pathway underlying the pathogenesis of CC. The presence of rs13281615 G > A polymorphism on PVT1 and the rs2910164 C > G polymorphism on miR-146a contributes to a favorable prognosis in CC patients via modulating the activity of the PVT1/miR-146a/COX2 signaling pathway.
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Affiliation(s)
- Wanli Zhang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun Xiao
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoming Lu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tao Liu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xin Jin
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yong Xiao
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoqi He
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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18
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Huang X, Zhu Z, Guo X, Kong X. The roles of microRNAs in the pathogenesis of chronic obstructive pulmonary disease. Int Immunopharmacol 2018; 67:335-347. [PMID: 30578969 DOI: 10.1016/j.intimp.2018.12.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 11/16/2018] [Accepted: 12/05/2018] [Indexed: 02/07/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) is characterized by a progressive and irreversible airflow obstruction, with an abnormal lung function. The etiology of COPD correlates with complex interactions between environmental and genetic determinants. However, the exact pathogenesis of COPD is obscure although it involves multiple aspects including oxidative stress, imbalance between proteolytic and anti-proteolytic activity, immunity and inflammation, apoptosis, and repair and destruction in both airways and lungs. Many genes have been demonstrated to be involved in those pathogenic processes of this disease in patients exposed to harmful environmental factors. Previous reports have investigated promising microRNAs (miRNAs) to disclose the molecular mechanisms for COPD development induced by different environmental exposure and genetic predisposition encounter, and find some potential miRNA biomarkers for early diagnosis and treatment targets of COPD. In this review, we summarized the expression profiles of the reported miRNAs from studies of COPD associated with environmental risk factors including cigarette smoking and air pollution exposures, and provided an overview of roles of those miRNAs in the pathogenesis of the disease. We also highlighted the potential utility and limitations of miRNAs serving as diagnostic biomarkers and therapeutic targets for COPD.
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Affiliation(s)
- Xinwei Huang
- Medical School, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China
| | - Zongxin Zhu
- Medical School, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China
| | - Xiaoran Guo
- Medical School, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China
| | - Xiangyang Kong
- Medical School, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China.
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19
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Feng S, Zeng D, Zheng J, Zhao D. MicroRNAs: Mediators and Therapeutic Targets to Airway Hyper Reactivity After Respiratory Syncytial Virus Infection. Front Microbiol 2018; 9:2177. [PMID: 30254626 PMCID: PMC6141694 DOI: 10.3389/fmicb.2018.02177] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 08/24/2018] [Indexed: 12/21/2022] Open
Abstract
Respiratory syncytial virus (RSV) is the most important pathogen correlated to the first-time infant wheezing and later recurrence after its primary infection. RSV infection promotes the bronchial smooth muscle sensitivity to leukotrienes (LTs) in acute stage, causes the extensive inflammatory reaction and the aggregation of Th2-like cells during respiratory tract obstruction. Infants and young children infected with RSV exhibit an increased susceptibility to the exposure of exogenous allergens, easy to suffer from the recurrent wheezing, which prompts that the body is still in a state of inflammation or immunological bias. However, the pathological mechanism is unclear. The recent researches demonstrate that abnormal expression of non-coding microRNAs (miRNAs) can be detected from the peripheral blood and airway tract epithelial of RSV infected infants, which participate the regulation of immune cells polarization and LTs synthesis. Improving the immune tolerance can significantly relieve the airway inflammation and broncho-spasm caused by RSV. In this review, we discuss recent advances in understanding the mechanism of RSV-induced inflammatory reaction and immune dysfunction leading to airway hyper-reactivity. Further, we summarize the potential molecular basis that, in this process, miRNAs, which are produced by airway epithelial cells or peripheral blood mononuclear cells, directly or in the form of exosome to regulate the inflammation programs as well as the function, differentiation and proliferation of immune cells. miRNAs may become a potential bio-marker of detecting severe RSV infection and a novel target of early intervention and therapeutic strategy in recurrent wheezing or asthma related to RSV infection.
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Affiliation(s)
| | | | | | - Dongchi Zhao
- Department of Pediatrics, Children’s Digital Health and Data Center, Zhongnan Hospital of Wuhan University, Wuhan, China
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20
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Regional heterogeneity in response of airway epithelial cells to cigarette smoke. BMC Pulm Med 2018; 18:148. [PMID: 30180847 PMCID: PMC6122713 DOI: 10.1186/s12890-018-0715-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 08/28/2018] [Indexed: 11/16/2022] Open
Abstract
Background Cigarette smoke (CS) exposure causes an abnormal inflammatory response, which can result in chronic obstructive pulmonary disease (COPD). Previous studies show that this disorder predominantly occurs in peripheral or small-airway areas, whereas the same condition has not been identified in the larger airways during the course of COPD. However, the different biochemical and genetic alterations occurring in response to CS exposure among airway epithelial cells from different sites in the lungs have not been fully investigated. Methods Human small airway epithelial cells (SAECs) and normal human bronchial epithelial cells (NHBEs) were exposed to CS extract (CSE), and microarray analysis was used to determine gene- and protein-expression profiles and identify alterations following CSE exposure in both cell types. An in vivo smoking experiment was also performed to confirm differential responses to CS between sites in the lung. Results Microarray analysis of SAECs and NHBEs following 24 h of CSE exposure showed that inflammatory related pathways and terms, including the tumor necrosis factor-signaling pathway, were overrepresented, especially in SAECs. Clustering analysis highlighted prostaglandin-endoperoxide synthase-2 [also known as cyclooxygenase (COX)-2] as a gene specifically upregulated in SAECs, with COX-2 mRNA and protein expression significantly elevated by CSE exposure in SAECs (3.1- and 3.1-fold, respectively), but not in NHBEs. Furthermore, time-course analysis of COX-2 expression revealed earlier increases in SAECs compared with NHBEs following CS exposure. Short-term exposure of mouse lungs to CS was found to predominantly induce COX-2 expression in the small airway. Conclusions The small airway is more susceptible to CSE than the large airway and could be the initial site of development of CS-related respiratory diseases, such as COPD. Electronic supplementary material The online version of this article (10.1186/s12890-018-0715-4) contains supplementary material, which is available to authorized users.
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21
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Zhou S, Liu Y, Li M, Wu P, Sun G, Fei G, Xu X, Zhou X, Zhou L, Wang R. Combined Effects of PVT1 and MiR-146a Single Nucleotide Polymorphism on the Lung Function of Smokers with Chronic Obstructive Pulmonary Disease. Int J Biol Sci 2018; 14:1153-1162. [PMID: 30123065 PMCID: PMC6097483 DOI: 10.7150/ijbs.25420] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/16/2018] [Indexed: 12/14/2022] Open
Abstract
Non-coding RNAs play an important role in the pathogenesis of chronic obstructive pulmonary disease (COPD). This study was performed to investigate the role of PVT1 and miR-146a single nucleotide polymorphisms (SNPs) in the lung function of COPD smokers. Real-time PCR and Western blot analyses were performed to measure the expression of miR-146 and PVT1 SNPs and determine the effect of these SNPs on the pathogenesis of COPD. A total of 100 COPD smokers were enrolled in this study and divided into four groups as follows: Rs2910164CC/GC + Rs13281615GG; Rs2910164CC/GC + Rs13281615GA/AA; Rs2910164GG + Rs13281615GG; and Rs2910164GG + Rs13281615GA/AA. No obvious differences in terms of age, sex, and body height and weight were found among the four groups. However, the Rs2910164GG + Rs13281615GA/AA was associated with the highest stage of the Global Initiative for Chronic Obstructive Lung Disease and the highest values of the forced vital capacity, forced expiratory volume, and diffusing capacity of carbon monoxide, while the lowest values of these parameters were observed in the Rs2910164CC/GC + Rs13281615GG group. In addition, the highest and lowest COX2 levels were observed in the Rs2910164GG + Rs13281615GA/AA and Rs2910164CC/GC + Rs13281615GG groups, respectively. PVT1 directly and negatively regulated the miR-146a expression, which in turn directly and negatively regulated COX2 expression. Thus, the combined actions of SNP in PVT1 Rs13281615 and miR-146a Rs2910164 affected the lung function in COPD smokers.
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Affiliation(s)
- Sijing Zhou
- Hefei Prevention and Treatment Center for Occupational Diseases, Hefei 230022, China
| | - Yi Liu
- Department of respiratory and critical care medicine, the first affiliated hospital of Anhui medical university, Hefei 230022, China
| | - Min Li
- Department of oncology, the first affiliated hospital of Anhui medical university, Hefei 230022, China
| | - Peipei Wu
- Department of respiratory and critical care medicine, the first affiliated hospital of Anhui medical university, Hefei 230022, China
| | - Gengyun Sun
- Department of respiratory and critical care medicine, the first affiliated hospital of Anhui medical university, Hefei 230022, China
| | - Guanghe Fei
- Department of respiratory and critical care medicine, the first affiliated hospital of Anhui medical university, Hefei 230022, China
| | - Xuan Xu
- Division of Pulmonary/Critical Care Medicine, Cedars sinai Medical Center, Los Angeles 90015, USA
| | - Xuexin Zhou
- The first clinical college of Anhui medical university, Hefei 230032, China
| | - Luqian Zhou
- The first clinical college of Anhui medical university, Hefei 230032, China
| | - Ran Wang
- Department of respiratory and critical care medicine, the first affiliated hospital of Anhui medical university, Hefei 230022, China
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22
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Bronchoalveolar Lavage Fluid microRNA-146a: A Biomarker of Disease Severity and Pulmonary Function in Patients With Silicosis. J Occup Environ Med 2018; 58:e177-82. [PMID: 27158964 DOI: 10.1097/jom.0000000000000719] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To examine the impact of microRNA-146a (miR-146a) on pulmonary function and disease severity in silicosis patients. METHODS Twenty-nine silicosis patients and six observation subjects were recruited. MiR-146a expression level was detected by qRT-PCR, and pulmonary function was assessed with a spirometer. RESULTS MiR-146a expression level was higher in silicosis patients than in observation subjects, and the probability of suffering from silicosis increased with increasing miR-146a level. MiR-146a was associated with the severity of silicosis. As the miR-146a increased, the probability of suffering from silicosis increased for stage I patients, and for stage II & III patients, the probability first increased and then decreased. MiR-146a was also associated with decreased pulmonary function measures, pulmonary function impairment, and restrictive ventilator dysfunction. CONCLUSIONS miR-146a was significantly associated with the disease severity and pulmonary function of silicosis.
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23
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Almodovar S, Swanson J, Giavedoni LD, Kanthaswamy S, Long CS, Voelkel NF, Edwards MG, Folkvord JM, Connick E, Westmoreland SV, Luciw PA, Flores SC. Lung Vascular Remodeling, Cardiac Hypertrophy, and Inflammatory Cytokines in SHIVnef-Infected Macaques. Viral Immunol 2017; 31:206-222. [PMID: 29256819 DOI: 10.1089/vim.2017.0051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Fatal pulmonary arterial hypertension (PAH) affects HIV-infected individuals at significantly higher frequencies. We previously showed plexiform-like lesions characterized by recanalized lumenal obliteration, intimal disruption, medial hypertrophy, and thrombosis consistent with PAH in rhesus macaques infected with chimeric SHIVnef but not with the parental SIVmac239, suggesting that Nef is implicated in the pathophysiology of HIV-PAH. However, the current literature on non-human primates as animal models for SIV(HIV)-associated pulmonary disease reports the ultimate pathogenic pulmonary outcomes of the research efforts; however, the variability and features in the actual disease progression remain poorly described, particularly when using different viral sources for infection. We analyzed lung histopathology, performed immunophenotyping of cells in plexogenic lesions pathognomonic of PAH, and measured cardiac hypertrophy biomarkers and cytokine expression in plasma and lung of juvenile SHIVnef-infected macaques. Here, we report significant hematopathologies, changes in cardiac biomarkers consistent with ventricular hypertrophy, significantly increased levels of interleukin-12 and GM-CSF and significantly decreased sCD40 L, CCL-2, and CXCL-1 in plasma of the SHIVnef group. Pathway analysis of inflammatory gene expression predicted activation of NF-κB transcription factor RelB and inhibition of bone morphogenetic protein type-2 in the setting of SHIVnef infection. Our findings highlight the utility of SHIVnef-infected macaques as suitable models of HIV-associated pulmonary vascular remodeling as pathogenetic changes are concordant with features of idiopathic, familial, scleroderma, and HIV-PAH.
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Affiliation(s)
- Sharilyn Almodovar
- 1 Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus , Aurora, Colorado.,2 Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center , Lubbock, Texas
| | - Jessica Swanson
- 1 Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus , Aurora, Colorado
| | - Luis D Giavedoni
- 3 Department of Virology and Immunology, and Southwest National Primate Research Center, Texas Biomedical Research Institute , San Antonio, Texas
| | - Sreetharan Kanthaswamy
- 4 School of Mathematical and Natural Sciences, New College of Interdisciplinary Arts and Sciences, Arizona State University , Arizona
| | - Carlin S Long
- 5 Department of Medicine, University of California , San Francisco, San Francisco, California
| | - Norbert F Voelkel
- 6 Victoria Johnson Center for Obstructive Lung Diseases, Virginia Commonwealth University , Richmond, Virginia
| | - Michael G Edwards
- 1 Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus , Aurora, Colorado
| | - Joy M Folkvord
- 7 Division of Infectious Diseases, Department of Medicine, University of Arizona College of Medicine , Tucson, Arizona
| | - Elizabeth Connick
- 7 Division of Infectious Diseases, Department of Medicine, University of Arizona College of Medicine , Tucson, Arizona
| | - Susan V Westmoreland
- 8 New England Primate Research Center , Division of Comparative Pathology, Southborough, Massachusetts
| | - Paul A Luciw
- 9 Center for Comparative Medicine, University of California , Davis, Davis, California
| | - Sonia C Flores
- 1 Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus , Aurora, Colorado
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24
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Gao Y, Zhang H, Luo L, Lin J, Li D, Zheng S, Huang H, Yan S, Yang J, Hao Y, Li H, Gao Smith F, Jin S. Resolvin D1 Improves the Resolution of Inflammation via Activating NF-κB p50/p50-Mediated Cyclooxygenase-2 Expression in Acute Respiratory Distress Syndrome. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2017; 199:ji1700315. [PMID: 28794232 PMCID: PMC5583748 DOI: 10.4049/jimmunol.1700315] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 06/30/2017] [Indexed: 12/21/2022]
Abstract
Acute respiratory distress syndrome (ARDS) is a severe illness characterized by uncontrolled inflammation. The resolution of inflammation is a tightly regulated event controlled by endogenous mediators, such as resolvin D1 (RvD1). Cyclooxygenase-2 (COX-2) has been reported to promote inflammation, along with PGE2, in the initiation of inflammation, as well as in prompting resolution, with PGD2 acting in the later phase of inflammation. Our previous work demonstrated that RvD1 enhanced COX-2 and PGD2 expression to resolve inflammation. In this study, we investigated mechanisms underlying the effect of RvD1 in modulating proresolving COX-2 expression. In a self-limited ARDS model, an LPS challenge induced the biphasic activation of COX-2, and RvD1 promoted COX-2 expression during the resolution phase. However, it was significantly blocked by treatment of a NF-κB inhibitor. In pulmonary fibroblasts, NF-κB p50/p50 was shown to be responsible for the proresolving activity of COX-2. Additionally, RvD1 potently promoted p50 homodimer nuclear translocation and robustly triggered DNA-binding activity, upregulating COX-2 expression via lipoxin A4 receptor/formyl peptide receptor 2. Finally, the absence of p50 in knockout mice prevented RvD1 from promoting COX-2 and PGD2 expression and resulted in excessive pulmonary inflammation. In conclusion, RvD1 expedites the resolution of inflammation through activation of lipoxin A4 receptor/formyl peptide receptor 2 receptor and NF-κB p50/p50-COX-2 signaling pathways, indicating that RvD1 might have therapeutic potential in the management of ARDS.
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Affiliation(s)
- Ye Gao
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
| | - Huawei Zhang
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
| | - Lingchun Luo
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
| | - Jing Lin
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
| | - Dan Li
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
| | - Sisi Zheng
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
| | - Hua Huang
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
| | - Songfan Yan
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
| | - Jingxiang Yang
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
| | - Yu Hao
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
| | - Hui Li
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
| | - Fang Gao Smith
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
- Institute of Inflammation and Ageing, College of Medical and Dental Science, University of Birmingham, Birmingham B15 2WB, United Kingdom
| | - Shengwei Jin
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325027, China; and
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25
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Shields PG, Berman M, Brasky TM, Freudenheim JL, Mathe E, McElroy JP, Song MA, Wewers MD. A Review of Pulmonary Toxicity of Electronic Cigarettes in the Context of Smoking: A Focus on Inflammation. Cancer Epidemiol Biomarkers Prev 2017; 26:1175-1191. [PMID: 28642230 PMCID: PMC5614602 DOI: 10.1158/1055-9965.epi-17-0358] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 05/22/2017] [Accepted: 05/24/2017] [Indexed: 12/30/2022] Open
Abstract
The use of electronic cigarettes (e-cigs) is increasing rapidly, but their effects on lung toxicity are largely unknown. Smoking is a well-established cause of lung cancer and respiratory disease, in part through inflammation. It is plausible that e-cig use might affect similar inflammatory pathways. E-cigs are used by some smokers as an aid for quitting or smoking reduction, and by never smokers (e.g., adolescents and young adults). The relative effects for impacting disease risk may differ for these groups. Cell culture and experimental animal data indicate that e-cigs have the potential for inducing inflammation, albeit much less than smoking. Human studies show that e-cig use in smokers is associated with substantial reductions in blood or urinary biomarkers of tobacco toxicants when completely switching and somewhat for dual use. However, the extent to which these biomarkers are surrogates for potential lung toxicity remains unclear. The FDA now has regulatory authority over e-cigs and can regulate product and e-liquid design features, such as nicotine content and delivery, voltage, e-liquid formulations, and flavors. All of these factors may impact pulmonary toxicity. This review summarizes current data on pulmonary inflammation related to both smoking and e-cig use, with a focus on human lung biomarkers. Cancer Epidemiol Biomarkers Prev; 26(8); 1175-91. ©2017 AACR.
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Affiliation(s)
- Peter G Shields
- Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, and College of Medicine, Columbus, Ohio.
| | - Micah Berman
- Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, and College of Public Health, Ohio
| | - Theodore M Brasky
- Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, and College of Medicine, Columbus, Ohio
| | - Jo L Freudenheim
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, Buffalo, New York
| | - Ewy Mathe
- Department of Biomedical Informatics, The Ohio State University, Columbus, Ohio
| | - Joseph P McElroy
- Center for Biostatistics, Department of Biomedical Informatics, The Ohio State University, Columbus, Ohio
| | - Min-Ae Song
- Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, and College of Medicine, Columbus, Ohio
| | - Mark D Wewers
- Department of Internal Medicine, The Ohio State University, Columbus, Ohio
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26
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Low levels of the AhR in chronic obstructive pulmonary disease (COPD)-derived lung cells increases COX-2 protein by altering mRNA stability. PLoS One 2017; 12:e0180881. [PMID: 28749959 PMCID: PMC5531650 DOI: 10.1371/journal.pone.0180881] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/22/2017] [Indexed: 11/19/2022] Open
Abstract
Heightened inflammation, including expression of COX-2, is associated with chronic obstructive pulmonary disease (COPD) pathogenesis. The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that is reduced in COPD-derived lung fibroblasts. The AhR also suppresses COX-2 in response to cigarette smoke, the main risk factor for COPD, by destabilizing the Cox-2 transcript by mechanisms that may involve the regulation of microRNA (miRNA). Whether reduced AhR expression is responsible for heightened COX-2 in COPD is not known. Here, we investigated the expression of COX-2 as well as the expression of miR-146a, a miRNA known to regulate COX-2 levels, in primary lung fibroblasts derived from non-smokers (Normal) and smokers (At Risk) with and without COPD. To confirm the involvement of the AhR, AhR knock-down via siRNA in Normal lung fibroblasts and MLE-12 cells was employed as were A549-AhRko cells. Basal expression of COX-2 protein was higher in COPD lung fibroblasts compared to Normal or Smoker fibroblasts but there was no difference in Cox-2 mRNA. Knockdown of AhR in lung structural cells increased COX-2 protein by stabilizing the Cox-2 transcript. There was less induction of miR-146a in COPD-derived lung fibroblasts but this was not due to the AhR. Instead, we found that RelB, an NF-κB protein, was required for transcriptional induction of both Cox-2 and miR-146a. Therefore, we conclude that the AhR controls COX-2 protein via mRNA stability by a mechanism independent of miR-146a. Low levels of the AhR may therefore contribute to the heightened inflammation common in COPD patients.
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27
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Osei ET, Florez-Sampedro L, Tasena H, Faiz A, Noordhoek JA, Timens W, Postma DS, Hackett TL, Heijink IH, Brandsma CA. miR-146a-5p plays an essential role in the aberrant epithelial-fibroblast cross-talk in COPD. Eur Respir J 2017; 49:49/5/1602538. [PMID: 28546273 DOI: 10.1183/13993003.02538-2016] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 01/29/2017] [Indexed: 12/21/2022]
Abstract
We previously reported that epithelial-derived interleukin (IL)-1α drives fibroblast-derived inflammation in the lung epithelial-mesenchymal trophic unit. Since miR-146a-5p has been shown to negatively regulate IL-1 signalling, we investigated the role of miR-146a-5p in the regulation of IL-1α-driven inflammation in chronic obstructive pulmonary disease (COPD).Human bronchial epithelial (16HBE14o-) cells were co-cultured with control and COPD-derived primary human lung fibroblasts (PHLFs), and miR-146a-5p expression was assessed with and without IL-1α neutralising antibody. Genomic DNA was assessed for the presence of the single nucleotide polymorphism (SNP) rs2910164. miR-146a-5p mimics were used for overexpression studies to assess IL-1α-induced signalling and IL-8 production by PHLFs.Co-culture of PHLFs with airway epithelial cells significantly increased the expression of miR-146a-5p and this induction was dependent on epithelial-derived IL-1α. miR-146a-5p overexpression decreased IL-1α-induced IL-8 secretion in PHLFs via downregulation of IL-1 receptor-associated kinase-1. In COPD PHLFs, the induction of miR-146a-5p was significantly less compared with controls and was associated with the SNP rs2910164 (GG allele) in the miR-146a-5p gene.Our results suggest that induction of miR-146a-5p is involved in epithelial-fibroblast communication in the lungs and negatively regulates epithelial-derived IL-1α induction of IL-8 by fibroblasts. The decreased levels of miR-146a-5p in COPD fibroblasts may induce a more pro-inflammatory phenotype, contributing to chronic inflammation in COPD.
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Affiliation(s)
- Emmanuel T Osei
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands .,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Centre for Heart and Lung Innovation, University of British Columbia, Vancouver, BC, Canada
| | - Laura Florez-Sampedro
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Dept of Pharmacokinetics, Toxicology and Targeting, University of Groningen, Groningen, The Netherlands
| | - Hataitip Tasena
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Alen Faiz
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jacobien A Noordhoek
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Dept of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Wim Timens
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Dirkje S Postma
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Dept of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Tillie L Hackett
- Centre for Heart and Lung Innovation, University of British Columbia, Vancouver, BC, Canada
| | - Irene H Heijink
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Dept of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,These two authors contributed equally to this work
| | - Corry-Anke Brandsma
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,These two authors contributed equally to this work
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28
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Shen W, Liu J, Zhao G, Fan M, Song G, Zhang Y, Weng Z, Zhang Y. Repression of Toll-like receptor-4 by microRNA-149-3p is associated with smoking-related COPD. Int J Chron Obstruct Pulmon Dis 2017; 12:705-715. [PMID: 28260877 PMCID: PMC5327902 DOI: 10.2147/copd.s128031] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background Smoking is the leading cause of COPD. Exploring molecular markers and understanding the pathogenic mechanisms of smoking-related COPD are helpful for early clinical diagnosis and treatment of the disease. This study aims to identify specific circulating microRNAs (miRNAs) from the blood of COPD patients with a long history of smoking. Methods Blood samples from four different groups were collected, and miRNA microarray was performed. Differential expression of miRNAs was verified by quantitative polymerase chain reaction. In vitro, THP-1 cells were cultured and stimulated with cigarette smoke extract (CSE) or transfected with miR-149-3p inhibitor/mimics. Protein levels of Toll-like receptor 4 (TLR-4) and nuclear factor κB (NF-κB) were detected using Western blot and immunofluorescence. Interleukin (IL)-1β and tumor necrosis factor (TNF)-α levels were determined by an enzyme-linked immunosorbent assay. Results miRNA profiling revealed that the expression of 56 miRNAs was changed between the four groups. Expression of miR-149-3p in group C (non-smoker non-COPD) was higher than in group S (smoker non-COPD), S-COPD (smoker with stable COPD) and AE-COPD (smoker with acute exacerbation COPD). CSE stimulation down-regulated the expression of miR-149-3p and up-regulated the TLR-4 and NF-κB levels in THP-1 cells. Transfecting miR-149-3p inhibitors in THP-1 cells also increased the expression of its target genes. Furthermore, overexpression of miR-149-3p inhibited the TLR-4/NF-κB signaling pathways and reduced the secretion of IL-1β and TNF-α. Conclusion This study found that smoking can induce differential expression of circulating miR-NAs, such as down-regulation of miR-149-3p. Reducing miR-149-3p may increase the inflammatory response in COPD patients through the regulation of the TLR-4/NF-κB signaling pathway.
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Affiliation(s)
- Wen Shen
- Department of Respiratory Medicine
| | - Jia Liu
- Department of Experimental Zoology, The Second Affiliated Hospital of Kunming Medical University
| | | | | | - Gao Song
- School of Pharmaceutical Science, Kunming Medical University
| | | | - Zhiying Weng
- School of Pharmaceutical Science, Kunming Medical University
| | - You Zhang
- Department of Hematology, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, People's Republic of China
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29
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Inhaled Pollutants: The Molecular Scene behind Respiratory and Systemic Diseases Associated with Ultrafine Particulate Matter. Int J Mol Sci 2017; 18:ijms18020243. [PMID: 28125025 PMCID: PMC5343780 DOI: 10.3390/ijms18020243] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 01/09/2017] [Accepted: 01/13/2017] [Indexed: 01/10/2023] Open
Abstract
Air pollution of anthropogenic origin is largely from the combustion of biomass (e.g., wood), fossil fuels (e.g., cars and trucks), incinerators, landfills, agricultural activities and tobacco smoke. Air pollution is a complex mixture that varies in space and time, and contains hundreds of compounds including volatile organic compounds (e.g., benzene), metals, sulphur and nitrogen oxides, ozone and particulate matter (PM). PM0.1 (ultrafine particles (UFP)), those particles with a diameter less than 100 nm (includes nanoparticles (NP)) are considered especially dangerous to human health and may contribute significantly to the development of numerous respiratory and cardiovascular diseases such as chronic obstructive pulmonary disease (COPD) and atherosclerosis. Some of the pathogenic mechanisms through which PM0.1 may contribute to chronic disease is their ability to induce inflammation, oxidative stress and cell death by molecular mechanisms that include transcription factors such as nuclear factor κB (NF-κB) and nuclear factor (erythroid-derived 2)-like 2 (Nrf2). Epigenetic mechanisms including non-coding RNA (ncRNA) may also contribute towards the development of chronic disease associated with exposure to PM0.1. This paper highlights emerging molecular concepts associated with inhalational exposure to PM0.1 and their ability to contribute to chronic respiratory and systemic disease.
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30
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Rogers S, de Souza AR, Zago M, Iu M, Guerrina N, Gomez A, Matthews J, Baglole CJ. Aryl hydrocarbon receptor (AhR)-dependent regulation of pulmonary miRNA by chronic cigarette smoke exposure. Sci Rep 2017; 7:40539. [PMID: 28079158 PMCID: PMC5227990 DOI: 10.1038/srep40539] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 12/07/2016] [Indexed: 01/04/2023] Open
Abstract
The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor historically known for its toxic responses to man-made pollutants such as dioxin. More recently, the AhR has emerged as a suppressor of inflammation, oxidative stress and apoptosis from cigarette smoke by mechanisms that may involve the regulation of microRNA. However, little is known about the AhR regulation of miRNA expression in the lung in response to inhaled toxicants. Therefore, we exposed Ahr−/− and Ahr+/− mice to cigarette smoke for 4 weeks and evaluated lung miRNA expression by PCR array. There was a dramatic regulation of lung miRNA by the AhR in the absence of exogenous ligand. In response to cigarette smoke, there were more up-regulated miRNA in Ahr−/− mice compared to Ahr+/− mice, including the cancer-associated miRNA miR-96. There was no significant change in the expression of the AhR regulated proteins HuR and cyclooxygenase-2 (COX-2). There were significant increases in the anti-oxidant gene sulfiredoxin 1 (Srxn1) and FOXO3a- predicted targets of miR-96. Collectively, these data support a prominent role for the AhR in regulating lung miRNA expression. Further studies to elucidate a role for these miRNA may further uncover novel biological function for the AhR in respiratory health and disease.
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Affiliation(s)
- Sarah Rogers
- Departments of Medicine, McGill University, Montreal, Quebec, Canada
| | - Angela Rico de Souza
- Research Institute of the McGill University Health Centre (RI-MUHC), Meakins-Christie Laboratories, Montreal, QC, Canada
| | - Michela Zago
- Departments of Pharmacology &Therapeutics, McGill University, Montreal, Quebec, Canada
| | - Matthew Iu
- Departments of Medicine, McGill University, Montreal, Quebec, Canada
| | - Necola Guerrina
- Departments of Pathology, McGill University, Montreal, Quebec, Canada
| | - Alvin Gomez
- Department of Pharmacology &Toxicology, University of Toronto, Toronto, Ontario, Canada
| | - Jason Matthews
- Department of Pharmacology &Toxicology, University of Toronto, Toronto, Ontario, Canada.,Department of Nutrition, University of Oslo, Oslo, Norway
| | - Carolyn J Baglole
- Departments of Medicine, McGill University, Montreal, Quebec, Canada.,Research Institute of the McGill University Health Centre (RI-MUHC), Meakins-Christie Laboratories, Montreal, QC, Canada.,Departments of Pharmacology &Therapeutics, McGill University, Montreal, Quebec, Canada.,Departments of Pathology, McGill University, Montreal, Quebec, Canada
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Molecular Background of miRNA Role in Asthma and COPD: An Updated Insight. BIOMED RESEARCH INTERNATIONAL 2016; 2016:7802521. [PMID: 27376086 PMCID: PMC4916273 DOI: 10.1155/2016/7802521] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 04/29/2016] [Accepted: 05/15/2016] [Indexed: 12/14/2022]
Abstract
Inflammatory airway diseases are a significant health problems requiring new approaches to the existing therapies and addressing fundamental issues. Difficulties in developing effective therapeutic strategies might be caused by lack of understanding of their exact molecular mechanism. MicroRNAs (miRNAs) are a class of regulators that already revolutionized the view of gene expression regulation. A cumulating number of investigations show a pivotal role of miRNAs in the pathogenesis of asthma, chronic obstructive pulmonary disease (COPD), or airway remodeling through the regulation of many pathways involved in their pathogenesis. Expression changes of several miRNAs have also been found to play a role in the development and/or improvement in asthma or COPD. Still, relatively little is known about the role of miRNAs in inflammatory disorders. The microRNA profiles may differ depending on the cell type or antigen-presenting cell. Based on the newest literature, this review discusses the current knowledge concerning miRNA contribution and influence on lung inflammation and chosen inflammatory airway diseases: asthma and COPD.
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Croasdell A, Sime PJ, Phipps RP. Resolvin D2 decreases TLR4 expression to mediate resolution in human monocytes. FASEB J 2016; 30:3181-93. [PMID: 27256622 DOI: 10.1096/fj.201600375r] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 05/23/2016] [Indexed: 12/26/2022]
Abstract
TLRs are critical for innate immunity, but excessive activation can lead to tissue damage and disease. Specialized proresolving mediators (SPMs), including resolvin D2 (RvD2), promote the active resolution of inflammation. How SPMs regulate early LPS signaling, including activation of TLR4, is unknown. We treated human THP-1 monocytic cells and primary human blood monocytes with RvD2 and LPS to evaluate modulation of TLRs. miRNA-146a overexpression and inhibition were used to dissect the mechanism of RvD2-mediated actions. We validated our studies using ELISAs for cytokines, PCR, Western blot analysis, and flow cytometry. Cells treated with 0.1% ethanol (control for RvD2) and/or PBS (control for LPS), and control microRNA mimics and inhibitors were used as controls. RvD2 reduced LPS-induced cytokines and TLR4 expression in human monocytes by up to 75%. In THP-1 cells, RvD2 reduced expression of TLR4, lymphocyte antigen 96 (MD-2), and downstream signals (MyD88, TRIF, and TAK1). These effects were partially mediated through RvD2 induction of microRNA-146a, and RvD2's actions were blocked by microRNA-146a inhibition. These new findings reveal the ability of RvD2 to reduce TLR4 expression and attenuate LPS-induced inflammation, providing a new area of SPM activity to investigate in this major area of therapeutic research.-Croasdell, A., Sime, P. J., Phipps, R. P. Resolvin D2 decreases TLR4 expression to mediate resolution in human monocytes.
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Affiliation(s)
- Amanda Croasdell
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA; and
| | - Patricia J Sime
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA; and Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
| | - Richard P Phipps
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA; and Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
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Labonté LE, Bourbeau J, Daskalopoulou SS, Zhang M, Coulombe P, Garland K, Baglole CJ. Club Cell-16 and RelB as Novel Determinants of Arterial Stiffness in Exacerbating COPD Patients. PLoS One 2016; 11:e0149974. [PMID: 26914709 PMCID: PMC4767820 DOI: 10.1371/journal.pone.0149974] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 02/08/2016] [Indexed: 01/15/2023] Open
Abstract
Background Exacerbations of chronic obstructive pulmonary disease (COPD) are acute events of worsened respiratory symptoms that may increase the risk of cardiovascular disease (CVD), a leading cause of mortality amongst COPD patients. The utility of lung-specific inflammatory mediators such as club cell protein-16 (CC-16) and surfactant protein D (SPD) and that of a novel marker of CV outcomes in COPD- RelB- in predicting adverse cardiovascular events during exacerbation is not known. Methods Thirty-eight subjects with COPD admitted to the hospital for severe exacerbation were included in this analysis. Clinical, physiological and arterial stiffness measurements were performed within 72 hours of admission; this was followed by measurements taken every 3 days until hospital discharge, then once a week until 30 days after discharge, and then again at 90 and 180 days. Plasma concentrations of inflammatory mediators were measured from peripheral venous blood taken at admission, and at days 15, 30, 90 and 180. Results CC-16 and RelB concentrations were increased at day 15 of exacerbations whereas SPD concentrations were decreased. The course of change in CC-16 and RelB levels over time was inversely associated with that of carotid-femoral pulse wave velocity, the gold-standard measure of arterial stiffness. Increases in CC-16 could predict a decreased number of subsequent exacerbations during follow-up. Conclusions Lung-specific (CC-16) and novel (RelB) biomarkers are associated with systemic cardiovascular changes over time. CC-16 can predict subsequent exacerbations in subjects with severe COPD and may be an important biomarker of pulmonary and systemic stress in COPD.
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Affiliation(s)
- Laura E. Labonté
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Respiratory Epidemiology and Clinical Research Unit, Research Institute of the McGill University Health Center, Montreal, Québec, Canada
| | - Jean Bourbeau
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Respiratory Epidemiology and Clinical Research Unit, Research Institute of the McGill University Health Center, Montreal, Québec, Canada
| | | | - Michele Zhang
- Respiratory Epidemiology and Clinical Research Unit, Research Institute of the McGill University Health Center, Montreal, Québec, Canada
| | - Patrick Coulombe
- Respiratory Epidemiology and Clinical Research Unit, Research Institute of the McGill University Health Center, Montreal, Québec, Canada
| | - Katie Garland
- Respiratory Epidemiology and Clinical Research Unit, Research Institute of the McGill University Health Center, Montreal, Québec, Canada
| | - Carolyn J. Baglole
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Department of Pathology, McGill University, Montreal, Quebec, Canada
- Department of Pharmacology & Therapeutics, McGill University, Montreal, Québec, Canada
- Meakins Christie Laboratories, McGill University, Montreal, Québec, Canada
- * E-mail:
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Longhin E, Capasso L, Battaglia C, Proverbio MC, Cosentino C, Cifola I, Mangano E, Camatini M, Gualtieri M. Integrative transcriptomic and protein analysis of human bronchial BEAS-2B exposed to seasonal urban particulate matter. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 209:87-98. [PMID: 26647171 DOI: 10.1016/j.envpol.2015.11.013] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 11/10/2015] [Accepted: 11/12/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Exposure to particulate matter (PM) is associated with various health effects. Physico-chemical properties influence the toxicological impact of PM, nonetheless the mechanisms underlying PM-induced effects are not completely understood. OBJECTIVES Human bronchial epithelial cells were used to analyse the pathways activated after exposure to summer and winter urban PM and to identify possible markers of exposure. METHODS BEAS-2B cells were exposed for 24 h to 10 μg/cm(2) of winter PM2.5 (wPM) and summer PM10 (sPM) sampled in Milan. A microarray technology was used to profile the cells gene expression. Genes and microRNAs were analyzed by bioinformatics technique to identify pathways involved in cellular responses. Selected genes and pathways were validated at protein level (western blot, membrane protein arrays and ELISA). RESULTS The molecular networks activated by the two PM evidenced a correlation among oxidative stress, inflammation and DNA damage responses. sPM induced the release of pro-inflammatory mediators, although miR-146a and genes related to inflammation resulted up-regulated by both PM. Moreover both PM affected a set of genes, proteins and miRNAs related to antioxidant responses, cancer development, extracellular matrix remodeling and cytoskeleton organization, while miR-29c, implicated in epigenetic modification, resulted up-regulated only by wPM. sPM effects may be related to biological and inorganic components, while wPM apparently related to the high content of organic compounds. CONCLUSIONS These results may be helpful for the individuation of biomarkers for PM exposure, linked to the specific PM physico-chemical properties.
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Affiliation(s)
- Eleonora Longhin
- Department of Earth and Environmental Sciences, POLARIS Research Centre, University of Milano-Bicocca, Piazza della Scienza 1, Milano 20126, Italy
| | - Laura Capasso
- Department of Earth and Environmental Sciences, POLARIS Research Centre, University of Milano-Bicocca, Piazza della Scienza 1, Milano 20126, Italy
| | - Cristina Battaglia
- Department of medical biotechnology and translational medicine (BIOMETRA), Università degli Studi di Milano, 93 via F.lli Cervi, Segrate 20900, Italy; Institute of biomedical technology, CNR, Via F.lli Cervi, Segrate 20900, Italy.
| | - Maria Carla Proverbio
- Department of Physiopathology and Transplantation, Università degli Studi di Milano, 20090, Italy
| | - Cristina Cosentino
- Department of medical biotechnology and translational medicine (BIOMETRA), Università degli Studi di Milano, 93 via F.lli Cervi, Segrate 20900, Italy
| | - Ingrid Cifola
- Department of Physiopathology and Transplantation, Università degli Studi di Milano, 20090, Italy
| | - Eleonora Mangano
- Institute of biomedical technology, CNR, Via F.lli Cervi, Segrate 20900, Italy
| | - Marina Camatini
- Department of Earth and Environmental Sciences, POLARIS Research Centre, University of Milano-Bicocca, Piazza della Scienza 1, Milano 20126, Italy
| | - Maurizio Gualtieri
- ENEA-UTTS/SSPT-MET-INAT, Strada per Crescentino 41, 13040, Saluggia (VC), Italy.
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Croasdell A, Thatcher TH, Kottmann RM, Colas RA, Dalli J, Serhan CN, Sime PJ, Phipps RP. Resolvins attenuate inflammation and promote resolution in cigarette smoke-exposed human macrophages. Am J Physiol Lung Cell Mol Physiol 2015; 309:L888-901. [PMID: 26301452 DOI: 10.1152/ajplung.00125.2015] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 08/18/2015] [Indexed: 01/08/2023] Open
Abstract
Inflammation is a protective response to injury, but it can become chronic, leading to tissue damage and disease. Cigarette smoke causes multiple inflammatory diseases, which account for thousands of deaths and cost billions of dollars annually. Cigarette smoke disrupts the function of immune cells, such as macrophages, by prolonging inflammatory signaling, promoting oxidative stress, and impairing phagocytosis, contributing to increased incidence of infections. Recently, new families of lipid-derived mediators, "specialized proresolving mediators" (SPMs), were identified. SPMs play a critical role in the active resolution of inflammation by counterregulating proinflammatory signaling and promoting resolution pathways. We have identified dysregulated concentrations of lipid mediators in exhaled breath condensate, bronchoalveolar lavage fluid, and serum from patients with chronic obstructive pulmonary disease (COPD). In human alveolar macrophages from COPD and non-COPD patients, D-series resolvins decreased inflammatory cytokines and enhanced phagocytosis. To further investigate the actions of resolvins on human cells, macrophages were differentiated from human blood monocytes and treated with D-series resolvins and then exposed to cigarette smoke extract. Resolvins significantly suppressed macrophage production of proinflammatory cytokines, enzymes, and lipid mediators. Resolvins also increased anti-inflammatory cytokines, promoted an M2 macrophage phenotype, and restored cigarette smoke-induced defects in phagocytosis, highlighting the proresolving functions of these molecules. These actions were receptor-dependent and involved modulation of canonical and noncanonical NF-κB expression, with the first evidence for SPM action on alternative NF-κB signaling. These data show that resolvins act on human macrophages to attenuate cigarette smoke-induced inflammatory effects through proresolving mechanisms and provide new evidence of the therapeutic potential of SPMs.
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Affiliation(s)
- Amanda Croasdell
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York; Lung Biology and Disease Program, University of Rochester School of Medicine and Dentistry, Rochester, New York
| | - Thomas H Thatcher
- Lung Biology and Disease Program, University of Rochester School of Medicine and Dentistry, Rochester, New York; Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York; and
| | - R Matthew Kottmann
- Lung Biology and Disease Program, University of Rochester School of Medicine and Dentistry, Rochester, New York; Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York; and
| | - Romain A Colas
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Brigham and Women's Hospital, Boston, Massachusetts
| | - Jesmond Dalli
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Brigham and Women's Hospital, Boston, Massachusetts
| | - Charles N Serhan
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Brigham and Women's Hospital, Boston, Massachusetts
| | - Patricia J Sime
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York; Lung Biology and Disease Program, University of Rochester School of Medicine and Dentistry, Rochester, New York; Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York; and
| | - Richard P Phipps
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York; Lung Biology and Disease Program, University of Rochester School of Medicine and Dentistry, Rochester, New York; Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York; and
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Osei ET, Florez-Sampedro L, Timens W, Postma DS, Heijink IH, Brandsma CA. Unravelling the complexity of COPD by microRNAs: it's a small world after all. Eur Respir J 2015; 46:807-18. [PMID: 26250493 DOI: 10.1183/13993003.02139-2014] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 06/15/2015] [Indexed: 12/11/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is a progressive lung disease and is currently the fourth leading cause of death worldwide. Chronic inflammation and repair processes in the small airways are characteristic of COPD. Despite extensive efforts from researchers and industry, there is still no cure for COPD, hence an urgent need for new therapeutic alternatives. MicroRNAs are such an option; they are small noncoding RNAs involved in gene regulation. Their importance has been shown with respect to maintaining the balance between health and disease. Although previous reviews have discussed the expression of microRNAs related to lung disease, a detailed discussion regarding the function of differential miRNA expression in the pathogenesis of COPD is lacking.In this review we link the expression of microRNAs to different features of COPD and explain their importance in the pathogenesis of this disease. We further discuss their potential to contribute to the development of future therapeutic strategies.
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Affiliation(s)
- Emmanuel T Osei
- University of Groningen, University Medical Center Groningen, Dept of Pathology and Medical Biology, Groningen, The Netherlands University of Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands Both authors contributed equally as first authors
| | - Laura Florez-Sampedro
- University of Groningen, University Medical Center Groningen, Dept of Pathology and Medical Biology, Groningen, The Netherlands University of Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands Both authors contributed equally as first authors
| | - Wim Timens
- University of Groningen, University Medical Center Groningen, Dept of Pathology and Medical Biology, Groningen, The Netherlands University of Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands
| | - Dirkje S Postma
- University of Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands University of Groningen, University Medical Center Groningen, Dept of Pulmonology, Groningen, The Netherlands
| | - Irene H Heijink
- University of Groningen, University Medical Center Groningen, Dept of Pathology and Medical Biology, Groningen, The Netherlands University of Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands University of Groningen, University Medical Center Groningen, Dept of Pulmonology, Groningen, The Netherlands Both authors contributed equally as last authors
| | - Corry-Anke Brandsma
- University of Groningen, University Medical Center Groningen, Dept of Pathology and Medical Biology, Groningen, The Netherlands University of Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands Both authors contributed equally as last authors
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Nishioka M, Venkatesan N, Dessalle K, Mogas A, Kyoh S, Lin TY, Nair P, Baglole CJ, Eidelman DH, Ludwig MS, Hamid Q. Fibroblast-epithelial cell interactions drive epithelial-mesenchymal transition differently in cells from normal and COPD patients. Respir Res 2015; 16:72. [PMID: 26081431 PMCID: PMC4473826 DOI: 10.1186/s12931-015-0232-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 06/08/2015] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Epithelial-to-mesenchymal transition (EMT), which involves changes in cellular morphology of highly polarized epithelial cells and the gain of mesenchymal cell phenotype with migratory and invasive capacities, is implicated in smoking-related chronic obstructive pulmonary disease (COPD). However, the interactions of fibroblasts and epithelial cells and the participation of fibroblasts in the EMT processes in COPD are poorly understood. Here, we investigated the hypothesis that EMT is active in human bronchial epithelial (HBE) cells of COPD patients, and that mediators secreted by lung fibroblasts from COPD patients induce EMT. METHODS Primary HBE cells from normal subjects and COPD patients were purchased from LONZA. HLFs were derived from resected lung obtained from normal (N) and COPD (D) subjects and their conditioned medium (CM) was collected after 2-day culture in serum-free medium. The expression of epithelial and mesenchymal markers as well as EMT-related transcription factors in lung biopsies, and in HBE cells following stimulation with CM from both normal human lung fibroblasts (NHLF) and COPD human lung fibroblasts (DHLF) was evaluated by immunohistochemistry, qRT-PCR and western blot. RESULTS Basal mRNA expression of mesenchymal markers and EMT-related transcription factors were increased in DHBE cells compared to normal human bronchial epithelial cells (NHBE) cells as well as in COPD lungs. CM from NHLF significantly induced vimentin expression in both NHBE and COPD human bronchial epithelial cells (DHBE) cells, but only increased N-cadherin expression in DHBE cells. CM from NHLF significantly induced Twist1 and Twist2 expression in NHBE cells and increased Snai2 (Slug) expression in DHBE cells. While CM from NHLF had no effect on such EMT markers, CM from DHLF significantly increased the protein expression of E-cadherin and vimentin in NHBE cells compared to control. N-cadherin expression was upregulated to a greater degree in NHBE cells than DHBE cells. Only CM from DHLF significantly increased E-/N-cadherin ratio in DHBE cells. CONCLUSIONS Our results suggest that DHBE cells have partially undergone EMT under baseline conditions. DHLF-CM promoted EMT in NHBE, suggesting that interactions between fibroblast and epithelial cells may play an important role in the EMT process in COPD.
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Affiliation(s)
- Michiyoshi Nishioka
- Meakins-Christie Laboratories, Research Institute-McGill University Health Centre, 1001 Decarie Boulevard, Block E, Montreal, QC, H4A 3J1, Canada.
| | - Narayanan Venkatesan
- Meakins-Christie Laboratories, Research Institute-McGill University Health Centre, 1001 Decarie Boulevard, Block E, Montreal, QC, H4A 3J1, Canada.
| | - Kevin Dessalle
- Meakins-Christie Laboratories, Research Institute-McGill University Health Centre, 1001 Decarie Boulevard, Block E, Montreal, QC, H4A 3J1, Canada.
| | - Andrea Mogas
- Meakins-Christie Laboratories, Research Institute-McGill University Health Centre, 1001 Decarie Boulevard, Block E, Montreal, QC, H4A 3J1, Canada.
| | - Shigenori Kyoh
- Meakins-Christie Laboratories, Research Institute-McGill University Health Centre, 1001 Decarie Boulevard, Block E, Montreal, QC, H4A 3J1, Canada.
| | - Ting-Yu Lin
- Meakins-Christie Laboratories, Research Institute-McGill University Health Centre, 1001 Decarie Boulevard, Block E, Montreal, QC, H4A 3J1, Canada. .,Department of Thoracic Medicine, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taipei, Taiwan.
| | | | - Carolyn J Baglole
- Meakins-Christie Laboratories, Research Institute-McGill University Health Centre, 1001 Decarie Boulevard, Block E, Montreal, QC, H4A 3J1, Canada.
| | - David H Eidelman
- Meakins-Christie Laboratories, Research Institute-McGill University Health Centre, 1001 Decarie Boulevard, Block E, Montreal, QC, H4A 3J1, Canada.
| | - Mara S Ludwig
- Meakins-Christie Laboratories, Research Institute-McGill University Health Centre, 1001 Decarie Boulevard, Block E, Montreal, QC, H4A 3J1, Canada.
| | - Qutayba Hamid
- Meakins-Christie Laboratories, Research Institute-McGill University Health Centre, 1001 Decarie Boulevard, Block E, Montreal, QC, H4A 3J1, Canada.
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Sheridan JA, Zago M, Nair P, Li PZ, Bourbeau J, Tan WC, Hamid Q, Eidelman DH, Benedetti AL, Baglole CJ. Decreased expression of the NF-κB family member RelB in lung fibroblasts from Smokers with and without COPD potentiates cigarette smoke-induced COX-2 expression. Respir Res 2015; 16:54. [PMID: 25943190 PMCID: PMC4427974 DOI: 10.1186/s12931-015-0214-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 04/21/2015] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Heightened inflammation, including expression of COX-2, is associated with COPD pathogenesis. RelB is an NF-κB family member that attenuates COX-2 in response to cigarette smoke by a mechanism that may involve the miRNA miR-146a. There is no information on the expression of RelB in COPD or if RelB prevents COX-2 expression through miR-146a. METHODS RelB, Cox-2 and miR-146a levels were evaluated in lung fibroblasts and blood samples derived from non-smokers (Normal) and smokers (At Risk) with and without COPD by qRT-PCR. RelB and COX-2 protein levels were evaluated by western blot. Human lung fibroblasts from Normal subjects and smokers with and without COPD, along with RelB knock-down (siRNA) in Normal cells, were exposed to cigarette smoke extract (CSE) in vitro and COX-2 mRNA/protein and miR-146a levels assessed. RESULTS Basal expression of RelB mRNA and protein were significantly lower in lung cells derived from smokers with and without COPD, the latter of which expressed more Cox-2 mRNA and protein in response to CSE. Knock-down of RelB in Normal fibroblasts increased Cox-2 mRNA and protein induction by CSE. Basal miR-146a levels were not different between the three groups, and only Normal fibroblasts increased miR-146a expression in response to smoke. There was a positive correlation between systemic RelB and Cox-2 mRNA levels and circulating miR-146a levels were higher only in GOLD stage I subjects. CONCLUSIONS Our data indicate that RelB attenuates COX-2 expression in lung structural cells, such that loss of pulmonary RelB may be an important determinant in the aberrant, heightened inflammation associated with COPD pathogenesis.
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Affiliation(s)
- Jared A Sheridan
- Department of Medicine, 1001 Decarie Blvd, Montreal, QC, H4A 3J1, Canada.
| | - Michela Zago
- Department of Medicine, 1001 Decarie Blvd, Montreal, QC, H4A 3J1, Canada.
| | | | - Pei Z Li
- Respiratory Epidemiology and Clinical Research Unit, Montreal Chest Institute, McGill University, Montreal, QC, Canada.
| | - Jean Bourbeau
- Respiratory Epidemiology and Clinical Research Unit, Montreal Chest Institute, McGill University, Montreal, QC, Canada.
| | - Wan C Tan
- The UBC James Hogg Research Centre, University of British Columbia, Vancouver, BC, Canada.
| | - Qutayba Hamid
- Department of Medicine, 1001 Decarie Blvd, Montreal, QC, H4A 3J1, Canada.
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC, H4A 3J1, Canada.
| | - David H Eidelman
- Department of Medicine, 1001 Decarie Blvd, Montreal, QC, H4A 3J1, Canada.
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC, H4A 3J1, Canada.
| | - Andrea L Benedetti
- Department of Epidemiology and Biostatistics, 1001 Decarie Blvd, Montreal, QC, H4A 3J1, Canada.
| | - Carolyn J Baglole
- Department of Medicine, 1001 Decarie Blvd, Montreal, QC, H4A 3J1, Canada.
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC, H4A 3J1, Canada.
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Zhang S, Patel A, Chu C, Jiang W, Wang L, Welty SE, Moorthy B, Shivanna B. Aryl hydrocarbon receptor is necessary to protect fetal human pulmonary microvascular endothelial cells against hyperoxic injury: Mechanistic roles of antioxidant enzymes and RelB. Toxicol Appl Pharmacol 2015; 286:92-101. [PMID: 25831079 DOI: 10.1016/j.taap.2015.03.023] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 03/10/2015] [Accepted: 03/19/2015] [Indexed: 02/03/2023]
Abstract
Hyperoxia contributes to the development of bronchopulmonary dysplasia (BPD) in premature infants. Activation of the aryl hydrocarbon receptor (AhR) protects adult and newborn mice against hyperoxic lung injury by mediating increases in the expression of phase I (cytochrome P450 (CYP) 1A) and phase II (NADP(H) quinone oxidoreductase (NQO1)) antioxidant enzymes (AOE). AhR positively regulates the expression of RelB, a component of the nuclear factor-kappaB (NF-κB) protein that contributes to anti-inflammatory processes in adult animals. Whether AhR regulates the expression of AOE and RelB, and protects fetal primary human lung cells against hyperoxic injury is unknown. Therefore, we tested the hypothesis that AhR-deficient fetal human pulmonary microvascular endothelial cells (HPMEC) will have decreased RelB activation and AOE, which will in turn predispose them to increased oxidative stress, inflammation, and cell death compared to AhR-sufficient HPMEC upon exposure to hyperoxia. AhR-deficient HPMEC showed increased hyperoxia-induced reactive oxygen species (ROS) generation, cleavage of poly(ADP-ribose) polymerase (PARP), and cell death compared to AhR-sufficient HPMEC. Additionally, AhR-deficient cell culture supernatants displayed increased macrophage inflammatory protein 1α and 1β, indicating a heightened inflammatory state. Interestingly, loss of AhR was associated with a significantly attenuated CYP1A1, NQO1, superoxide dismutase 1(SOD1), and nuclear RelB protein expression. These findings support the hypothesis that decreased RelB activation and AOE in AhR-deficient cells is associated with increased hyperoxic injury compared to AhR-sufficient cells.
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Affiliation(s)
- Shaojie Zhang
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Ananddeep Patel
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Chun Chu
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Weiwu Jiang
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Lihua Wang
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Stephen E Welty
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Bhagavatula Moorthy
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Binoy Shivanna
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA.
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Wang R, Li M, Zhou S, Zeng D, Xu X, Xu R, Sun G. Effect of a single nucleotide polymorphism in miR-146a on COX-2 protein expression and lung function in smokers with chronic obstructive pulmonary disease. Int J Chron Obstruct Pulmon Dis 2015; 10:463-73. [PMID: 25767384 PMCID: PMC4354402 DOI: 10.2147/copd.s74345] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
OBJECTIVE To evaluate the effect of a single nucleotide polymorphism (rs2910164) in the miR-146a precursor on the expression level of miR-146a, cyclooxygenase-2 (COX2), and production of prostaglandin E2 (PGE2) in lung tissue harvested from smokers with chronic obstructive pulmonary disease, as well as the lung function and disease stages from the same patient population. METHODS AND RESULTS One-hundred and sixty-eight smokers with diagnosed chronic obstructive pulmonary disease were recruited. The patients were genotyped for rs2910164 polymorphism using Sanger sequencing, and their lung function/disease stages were evaluated following Global Initiative for Chronic Obstructive Lung Disease (GOLD) criteria. Meanwhile, messenger ribonucleic acid and protein expression levels of miR-146a and COX2 as well as PGE2 production were determined in 66 lung tissue samples collected in the patients who received surgical treatment. We confirmed that COX2 is a validated target of miR-146a in human fibroblast cells, and identified the differential expression patterns of miR-146a and COX2 in each rs2910164 genotype group. We observed a significant association between rs2910164 in miR-146a and the levels of either COX2 or PGE2 using real-time polymerase chain reaction and Western blot. Consistently, we were able to demonstrate that the rs2910164 single nucleotide polymorphism has a functional effect on the baseline lung function in the study population. CONCLUSION In the present study, the rs2910164 CC and GC genotype was found to be associated with an improved lung function and milder disease stages, at least partially, mediated by its ability to increase in COX2 expression and PGE2 production.
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Affiliation(s)
- Ran Wang
- Department of Respiratory Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
| | - Min Li
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
| | - Sijing Zhou
- Department of Respiratory Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China ; Hefei Prevention and Treatment Center for Occupational Diseases, Hefei, People's Republic of China
| | - Daxiong Zeng
- Department of Respiratory Medicine, The First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Xuan Xu
- Division of Pulmonary/Critical Care Medicine, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Rui Xu
- Department of Respiratory Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
| | - Gengyun Sun
- Department of Respiratory Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
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Wei J, Li F, Yang J, Liu X, Cho WC. MicroRNAs as regulators of airborne pollution-induced lung inflammation and carcinogenesis. Arch Toxicol 2015; 89:677-85. [PMID: 25667014 DOI: 10.1007/s00204-015-1462-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 01/08/2015] [Indexed: 12/14/2022]
Abstract
The increasing incidence of pulmonary inflammation and lung cancer, as well as exacerbation of pre-existing chronic lung diseases by exposure to airborne pollutants, e.g., particulate matter and cigarette smoke, is becoming a major public health concern in the world. However, the exact mechanisms of pulmonary injury from exposure to these airborne insults have not been fully elucidated. Nevertheless, accumulating evidence suggests that microRNAs (miRNAs) may play a unique role in the regulation of airborne agent-induced lung inflammation and carcinogenesis. Since epigenetic modifications are heritable and reversible, this may provide a new insight into the relationship of miRNAs and environmental pollution-related lung disorders. The aim of this review was to update our existing knowledge regarding the mechanisms by which airborne pollutants altering miRNA profiles in the lung, specifically for cigarette smoke and airborne particulate matter, and the potential biological roles of miRNAs in the initiation of pulmonary inflammation and lung cancer, as well as the regulation of underlying genetic susceptibility to these environmental stressors.
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Affiliation(s)
- Jun Wei
- Center of Medical Research, General Hospital, Ningxia Medical University, Yinchuan, Ningxia, 750004, People's Republic of China
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Labonté L, Coulombe P, Zago M, Bourbeau J, Baglole CJ. Alterations in the expression of the NF-κB family member RelB as a novel marker of cardiovascular outcomes during acute exacerbations of chronic obstructive pulmonary disease. PLoS One 2014; 9:e112965. [PMID: 25409035 PMCID: PMC4237338 DOI: 10.1371/journal.pone.0112965] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 10/16/2014] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) exacerbations are acute events of worsened respiratory symptoms and enhanced inflammation partly mediated by NF-κB activation. RelB, an NF-κB family member, suppresses cigarette smoke-induced inflammation but its expression in COPD is unknown. Moreover, there is no information on its association with clinical features of COPD. The objectives of this study were to assess RelB expression relative to markers of inflammation as well as its association with cardiovascular and pulmonary features of COPD patients at stable-state and exacerbation. METHODS Data from 48 COPD patients were analyzed. Blood samples were collected from stable-state and exacerbating patients. After RNA isolation, quantitative real-time polymerase chain reaction (qRT-PCR) was performed to assess RelB, Cox-2, IL-8 and IL-1β mRNA expression and their associations with measured clinical variables. RESULTS Of the 48 COPD subjects, 18 were in stable-state and 30 were in exacerbation. RelB mRNA expression was lower than that of Cox-2, IL-8, and IL-1β in all cases (all p<0.001, except for IL-8 at exacerbation (p = 0.22)). Cox-2, IL-8 and IL-1β were significantly associated with clinical features of patients in both stable-state and at exacerbation. There was no association with RelB expression and any clinical features in COPD subjects at stable-state. RelB mRNA levels were significantly associated with cardiovascular events such as systolic blood pressure during exacerbation. CONCLUSIONS RelB mRNA expression is lower than that of the other inflammatory mediators. Expression of Cox-2, IL-8 and IL-1β were related to clinical features in both stable-state and at exacerbation. However, RelB expression was associated with clinical features of patients only during exacerbation, suggesting that RelB may represent a novel marker of health outcomes, in particular cardiovascular, during exacerbation in COPD.
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Affiliation(s)
- Laura Labonté
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Respiratory Epidemiology and Clinical Research Unit (RECRU), Montreal Chest Institute, McGill University Health Centre, Montreal, Quebec, Canada
| | - Patrick Coulombe
- Respiratory Epidemiology and Clinical Research Unit (RECRU), Montreal Chest Institute, McGill University Health Centre, Montreal, Quebec, Canada
| | - Michela Zago
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Meakins-Christie Laboratories, McGill University, Montreal, Quebec, Canada
| | - Jean Bourbeau
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Respiratory Epidemiology and Clinical Research Unit (RECRU), Montreal Chest Institute, McGill University Health Centre, Montreal, Quebec, Canada
| | - Carolyn J. Baglole
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Meakins-Christie Laboratories, McGill University, Montreal, Quebec, Canada
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Spinelli SL, Xi X, McMillan DH, Woeller CF, Richardson ME, Cavet ME, Zhang JZ, Feldon SE, Phipps RP. Mapracorat, a selective glucocorticoid receptor agonist, upregulates RelB, an anti-inflammatory nuclear factor-kappaB protein, in human ocular cells. Exp Eye Res 2014; 127:290-8. [DOI: 10.1016/j.exer.2014.07.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 06/25/2014] [Accepted: 07/15/2014] [Indexed: 10/24/2022]
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Hecht E, Zago M, Sarill M, Rico de Souza A, Gomez A, Matthews J, Hamid Q, Eidelman DH, Baglole CJ. Aryl hydrocarbon receptor-dependent regulation of miR-196a expression controls lung fibroblast apoptosis but not proliferation. Toxicol Appl Pharmacol 2014; 280:511-25. [PMID: 25178717 DOI: 10.1016/j.taap.2014.08.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 08/20/2014] [Accepted: 08/22/2014] [Indexed: 12/29/2022]
Abstract
The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor implicated in the regulation of apoptosis and proliferation. Although activation of the AhR by xenobiotics such as dioxin inhibits the cell cycle and control apoptosis, paradoxically, AhR expression also promotes cell proliferation and survival independent of exogenous ligands. The microRNA (miRNA) miR-196a has also emerged as a regulator of proliferation and apoptosis but a relationship between the AhR and miR-196a is not known. Therefore, we hypothesized that AhR-dependent regulation of endogenous miR-196a expression would promote cell survival and proliferation. Utilizing lung fibroblasts from AhR deficient (AhR(-/-)) and wild-type (AhR(+/+)) mice, we show that there is ligand-independent regulation of miRNA, including low miR-196a in AhR(-/-) cells. Validation by qRT-PCR revealed a significant decrease in basal expression of miR-196a in AhR(-/-) compared to AhR(+/+) cells. Exposure to AhR agonists benzo[a]pyrene (B[a]P) and FICZ as well as AhR antagonist CH-223191 decreased miR-196a expression in AhR(+/+) fibroblasts concomitant with decreased AhR protein levels. There was increased proliferation only in AhR(+/+) lung fibroblasts in response to serum, corresponding to a decrease in p27(KIP1) protein, a cyclin-dependent kinase inhibitor. Increasing the cellular levels of miR-196a had no effect on proliferation or expression of p27(KIP1) in AhR(-/-) fibroblasts but attenuated cigarette smoke-induced apoptosis. This study provides the first evidence that AhR expression is essential for the physiological regulation of cellular miRNA levels- including miR-196a. Future experiments designed to elucidate the functional relationship between the AhR and miR-196a may delineate additional novel ligand-independent roles for the AhR.
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Affiliation(s)
- Emelia Hecht
- Department of Medicine, McGill University, Montreal, Quebec, Canada
| | - Michela Zago
- Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada
| | - Miles Sarill
- Department of Medicine, McGill University, Montreal, Quebec, Canada
| | - Angela Rico de Souza
- Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada
| | - Alvin Gomez
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - Jason Matthews
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - Qutayba Hamid
- Department of Medicine, McGill University, Montreal, Quebec, Canada; Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada
| | - David H Eidelman
- Department of Medicine, McGill University, Montreal, Quebec, Canada; Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada
| | - Carolyn J Baglole
- Department of Medicine, McGill University, Montreal, Quebec, Canada; Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada.
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