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Perez-Garcia J, Espuela-Ortiz A, Hernández-Pérez JM, González-Pérez R, Poza-Guedes P, Martin-Gonzalez E, Eng C, Sardón-Prado O, Mederos-Luis E, Corcuera-Elosegui P, Sánchez-Machín I, Korta-Murua J, Villar J, Burchard EG, Lorenzo-Diaz F, Pino-Yanes M. Human genetics influences microbiome composition involved in asthma exacerbations despite inhaled corticosteroid treatment. J Allergy Clin Immunol 2023; 152:799-806.e6. [PMID: 37301411 PMCID: PMC10522330 DOI: 10.1016/j.jaci.2023.05.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/21/2023] [Accepted: 05/11/2023] [Indexed: 06/12/2023]
Abstract
BACKGROUND The upper-airway microbiome is involved in asthma exacerbations despite inhaled corticosteroid (ICS) treatment. Although human genetics regulates microbiome composition, its influence on asthma-related airway bacteria remains unknown. OBJECTIVE We sought to identify genes and biological pathways regulating airway-microbiome traits involved in asthma exacerbations and ICS response. METHODS Saliva, nasal, and pharyngeal samples from 257 European patients with asthma were analyzed. The association of 6,296,951 genetic variants with exacerbation-related microbiome traits despite ICS treatment was tested through microbiome genome-wide association studies. Variants with 1 × 10-4 RESULTS Genes associated with exacerbation-related airway-microbiome traits were enriched in asthma comorbidities development (ie, reflux esophagitis, obesity, and smoking), and were likely regulated by trichostatin A and the nuclear factor-κB, the glucocorticosteroid receptor, and CCAAT/enhancer-binding protein transcription factors (7.8 × 10-13 ≤ false discovery rate ≤ 0.022). Enrichment in smoking, trichostatin A, nuclear factor-κB, and glucocorticosteroid receptor were replicated in the saliva samples from diverse populations (4.42 × 10-9 ≤ P ≤ .008). The ICS-response-associated single nucleotide polymorphisms rs5995653 (APOBEC3B-APOBEC3C), rs6467778 (TRIM24), and rs5752429 (TPST2) were identified as microbiome quantitative trait loci of Streptococcus, Tannerella, and Campylobacter in the upper airway (0.027 ≤ false discovery rate ≤ 0.050). CONCLUSIONS Genes associated with asthma exacerbation-related microbiome traits might influence asthma comorbidities. We reinforced the therapeutic interest of trichostatin A, nuclear factor-κB, the glucocorticosteroid receptor, and CCAAT/enhancer-binding protein in asthma exacerbations.
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Affiliation(s)
- Javier Perez-Garcia
- Genomics and Health Group, Department of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna (ULL), La Laguna, Tenerife, Spain
| | - Antonio Espuela-Ortiz
- Genomics and Health Group, Department of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna (ULL), La Laguna, Tenerife, Spain
| | - José M Hernández-Pérez
- Pulmonary Medicine Service, Hospital Universitario N.S de Candelaria, La Laguna, Tenerife, Spain; Pulmonary Medicine Section, Hospital Universitario de La Palma, La Palma, Spain
| | - Ruperto González-Pérez
- Severe Asthma Unit, Allergy Department, Hospital Universitario de Canarias, La Laguna, Tenerife, Spain
| | - Paloma Poza-Guedes
- Severe Asthma Unit, Allergy Department, Hospital Universitario de Canarias, La Laguna, Tenerife, Spain
| | - Elena Martin-Gonzalez
- Genomics and Health Group, Department of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna (ULL), La Laguna, Tenerife, Spain
| | - Celeste Eng
- Department of Medicine, University of California San Francisco (UCSF), San Francisco, Calif
| | - Olaia Sardón-Prado
- Division of Pediatric Respiratory Medicine, Hospital Universitario Donostia, San Sebastián, Spain; Department of Pediatrics, University of the Basque Country (UPV/EHU), San Sebastián, Spain
| | - Elena Mederos-Luis
- Allergy Department, Hospital Universitario de Canarias, La Laguna, Tenerife, Spain
| | - Paula Corcuera-Elosegui
- Division of Pediatric Respiratory Medicine, Hospital Universitario Donostia, San Sebastián, Spain
| | | | - Javier Korta-Murua
- Division of Pediatric Respiratory Medicine, Hospital Universitario Donostia, San Sebastián, Spain
| | - Jesús Villar
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain; Multidisciplinary Organ Dysfunction Evaluation Research Network, Research Unit, Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, Spain; Li Ka Shing Knowledge Institute at the St. Michael's Hospital, Toronto, Ontario, Canada
| | - Esteban G Burchard
- Department of Medicine, University of California San Francisco (UCSF), San Francisco, Calif; Department of Bioengineering and Therapeutic Sciences, University of California San Francisco (UCSF), San Francisco, Calif
| | - Fabian Lorenzo-Diaz
- Genomics and Health Group, Department of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna (ULL), La Laguna, Tenerife, Spain; Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna (ULL), La Laguna, Tenerife, Spain.
| | - Maria Pino-Yanes
- Genomics and Health Group, Department of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna (ULL), La Laguna, Tenerife, Spain; CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain; Instituto de Tecnologías Biomédicas, Universidad de La Laguna (ULL), La Laguna, Tenerife, Spain.
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2
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Biological and Genetic Mechanisms of COPD, Its Diagnosis, Treatment, and Relationship with Lung Cancer. Biomedicines 2023; 11:biomedicines11020448. [PMID: 36830984 PMCID: PMC9953173 DOI: 10.3390/biomedicines11020448] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/26/2023] [Accepted: 01/31/2023] [Indexed: 02/09/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is one of the most prevalent chronic adult diseases, with significant worldwide morbidity and mortality. Although long-term tobacco smoking is a critical risk factor for this global health problem, its molecular mechanisms remain unclear. Several phenomena are thought to be involved in the evolution of emphysema, including airway inflammation, proteinase/anti-proteinase imbalance, oxidative stress, and genetic/epigenetic modifications. Furthermore, COPD is one main risk for lung cancer (LC), the deadliest form of human tumor; formation and chronic inflammation accompanying COPD can be a potential driver of malignancy maturation (0.8-1.7% of COPD cases develop cancer/per year). Recently, the development of more research based on COPD and lung cancer molecular analysis has provided new light for understanding their pathogenesis, improving the diagnosis and treatments, and elucidating many connections between these diseases. Our review emphasizes the biological factors involved in COPD and lung cancer, the advances in their molecular mechanisms' research, and the state of the art of diagnosis and treatments. This work combines many biological and genetic elements into a single whole and strongly links COPD with lung tumor features.
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Royce SG, Licciardi PV, Beh RC, Bourke JE, Donovan C, Hung A, Khurana I, Liang JJ, Maxwell S, Mazarakis N, Pitsillou E, Siow YY, Snibson KJ, Tobin MJ, Ververis K, Vongsvivut J, Ziemann M, Samuel CS, Tang MLK, El-Osta A, Karagiannis TC. Sulforaphane prevents and reverses allergic airways disease in mice via anti-inflammatory, antioxidant, and epigenetic mechanisms. Cell Mol Life Sci 2022; 79:579. [DOI: 10.1007/s00018-022-04609-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 10/13/2022] [Accepted: 10/21/2022] [Indexed: 11/30/2022]
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Asa'ad F, Thomsen P, Kunrath MF. The Role of Titanium Particles and Ions in the Pathogenesis of Peri-Implantitis. J Bone Metab 2022; 29:145-154. [PMID: 36153850 PMCID: PMC9511127 DOI: 10.11005/jbm.2022.29.3.145] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 08/18/2022] [Indexed: 11/22/2022] Open
Abstract
Titanium (Ti) particles and ions have been investigated in recent years as important factors in the pathogenesis of peri-implantitis. However, their role in the pathogenesis is yet to be fully understood. A review of pertinent literature was performed in various databases to determine the current position of Ti particles and ions role in the pathogenesis of peri-implantitis. There are several in vitro, preclinical and clinical published studies that have addressed the role of Ti particles and ions in the pathogenesis of peri-implantitis. These studies explored the effect of Ti particles and ions in the pathogenesis of peri-implantitis with respect to foreign body reaction, cellular response, epigenetic mechanisms, namely DNA methylation, and the oral microbiome. Studies have shown that the release of Ti particles/ions during implant insertion, early healing stages, late healing stages, and treatments during peri-implantitis might contribute to peri-implantitis through different mechanisms, such as foreign body reaction, cellular response, DNA methylation, and shaping the oral microbiome by increasing dysbiosis. However, further studies are needed to elucidate the complex interactions between all these mechanisms and Ti particles/ions in the pathogenesis and progression of peri-implantitis.
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Affiliation(s)
- Farah Asa'ad
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Oral Biochemistry, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Peter Thomsen
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Marcel F Kunrath
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Dentistry, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
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5
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Domingo-Relloso A, Riffo-Campos AL, Powers M, Tellez-Plaza M, Haack K, Brown RH, Umans JG, Fallin MD, Cole SA, Navas-Acien A, Sanchez TR. An epigenome-wide study of DNA methylation profiles and lung function among American Indians in the Strong Heart Study. Clin Epigenetics 2022; 14:75. [PMID: 35681244 PMCID: PMC9185990 DOI: 10.1186/s13148-022-01294-8] [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: 01/07/2022] [Accepted: 05/25/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Epigenetic modifications, including DNA methylation (DNAm), are often related to environmental exposures, and are increasingly recognized as key processes in the pathogenesis of chronic lung disease. American Indian communities have a high burden of lung disease compared to the national average. The objective of this study was to investigate the association of DNAm and lung function in the Strong Heart Study (SHS). We conducted a cross-sectional study of American Indian adults, 45-74 years of age who participated in the SHS. DNAm was measured using the Illumina Infinium Human MethylationEPIC platform at baseline (1989-1991). Lung function was measured via spirometry, including forced expiratory volume in 1 s (FEV1) and forced vital capacity (FVC), at visit 2 (1993-1995). Airflow limitation was defined as FEV1 < 70% predicted and FEV1/FVC < 0.7, restriction was defined as FEV1/FVC > 0.7 and FVC < 80% predicted, and normal spirometry was defined as FEV1/FVC > 0.7, FEV1 > 70% predicted, FVC > 80% predicted. We used elastic-net models to select relevant CpGs for lung function and spirometry-defined lung disease. We also conducted bioinformatic analyses to evaluate the biological plausibility of the findings. RESULTS Among 1677 participants, 21.2% had spirometry-defined airflow limitation and 13.6% had spirometry-defined restrictive pattern lung function. Elastic-net models selected 1118 Differentially Methylated Positions (DMPs) as predictors of airflow limitation and 1385 for restrictive pattern lung function. A total of 12 DMPs overlapped between airflow limitation and restrictive pattern. EGFR, MAPK1 and PRPF8 genes were the most connected nodes in the protein-protein interaction network. Many of the DMPs targeted genes with biological roles related to lung function such as protein kinases. CONCLUSION We found multiple differentially methylated CpG sites associated with chronic lung disease. These signals could contribute to better understand molecular mechanisms involved in lung disease, as assessed systemically, as well as to identify patterns that could be useful for diagnostic purposes. Further experimental and longitudinal studies are needed to assess whether DNA methylation has a causal role in lung disease.
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Affiliation(s)
- Arce Domingo-Relloso
- Integrative Epidemiology Group, Department of Chronic Diseases Epidemiology, National Center for Epidemiology, Carlos III Health Institute, 28029, Madrid, Spain. .,Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, USA. .,Department of Statistics and Operations Research, University of Valencia, Valencia, Spain.
| | - Angela L Riffo-Campos
- Millennium Nucleus on Sociomedicine (SocioMed) and Vicerrectoría Académica, Universidad de La Frontera, Temuco, Chile.,Department of Computer Science, ETSE, University of Valencia, Valencia, Spain
| | - Martha Powers
- United States Environmental Protection Agency, Washington, DC, USA
| | - Maria Tellez-Plaza
- Integrative Epidemiology Group, Department of Chronic Diseases Epidemiology, National Center for Epidemiology, Carlos III Health Institute, 28029, Madrid, Spain
| | - Karin Haack
- Population Health Program, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Robert H Brown
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, USA
| | - Jason G Umans
- MedStar Health Research Institute, Hyattsville, MD, USA.,Georgetown-Howard Universities Center for Clinical and Translational Science, Washington, DC, USA
| | - M Daniele Fallin
- Departments of Mental Health and Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, USA
| | - Shelley A Cole
- Population Health Program, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Ana Navas-Acien
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, USA
| | - Tiffany R Sanchez
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, USA
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Khouly I, Pardiñas López S, Díaz Prado SM, Ferrantino L, Kalm J, Larsson L, Asa’ad F. Global DNA Methylation in Dental Implant Failure Due to Peri-Implantitis: An Exploratory Clinical Pilot Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19021020. [PMID: 35055840 PMCID: PMC8775395 DOI: 10.3390/ijerph19021020] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/14/2022] [Accepted: 01/15/2022] [Indexed: 12/14/2022]
Abstract
Background: Peri-implantitis (PIT) is highly prevalent in patients with dental implants and is a challenging condition to treat due to the limited outcomes reported for non-surgical and surgical therapies. Therefore, epigenetic therapeutics might be of key importance to treat PIT. However, developing epigenetic therapeutics is based on understanding the relationship between epigenetics and disease. To date, there is still scarce knowledge about the relationship between epigenetic modifications and PIT, which warrants further investigations. Aim: The purpose of this study was to evaluate the level of global DNA methylation associated with implant failure (IF) due to PIT compared to periodontally healthy (PH) patients. Material and Methods: A total of 20 participants were initially enrolled in this pilot, exploratory, single-blinded, cross-sectional clinical human study in two groups: 10 in the PH group and 10 in the IF group. In the participants who have completed the study, gingival tissue and bone samples were harvested from each participant and were used to perform global DNA methylation analysis. The percentage of global DNA methylation (5-mC%) was compared (1) between groups (PH and IF); (2) between the subgroups of gingival tissue and bone separately; (3) in the whole sample, comparing gingival tissue and bone; (4) within groups, comparing gingival tissue and bone. Demographic, periodontal, and peri-implant measurements as well as periodontal staging, were also recorded. All statistical comparisons were made at the 0.05 significance level. Results: Out of the initially enrolled 20 patients, only 19 completed the study and, thus, were included in the final analysis; 10 patients in the PH group and 9 patients in the IF group, contributing to a total of 38 samples. One patient from the IF group was excluded from the study due to systemic disease. The mean implant survival time was 10.8 years (2.17–15.25 years). Intergroup comparison, stratified by group, indicated a similar 5-mC% between the PH and IF groups in both gingival tissue and bone (p = 0.599), only in bone (p = 0.414), and only in gingival tissue (p = 0.744). Intragroup comparison, stratified by the type of sample, indicated a significantly higher 5-mC% in gingival tissue samples compared to bone in both the PH and IF groups (p = 0.001), in the PH group (p = 0.019), and in the IF group (p = 0.009). Conclusions: Within the limitations of this study, higher global DNA methylation levels were found in gingival tissue samples compared to bone, regardless of the study groups. However, similar global DNA methylation levels were observed overall between the IF and PH groups. Yet, differences in the global DNA methylation levels between gingival tissues and bone, regardless of the study group, could reflect a different epigenetic response between various tissues within the same microenvironment. Further studies are necessary to elucidate the present findings and to evaluate the role of epigenetic modifications in IF due to PIT.
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Affiliation(s)
- Ismael Khouly
- Department of Oral and Maxillofacial Surgery, College of Dentistry, New York University, New York, NY 10010, USA
- Correspondence:
| | - Simon Pardiñas López
- Periodontology and Oral Surgery, Clínica Médico Dental Pardiñas, Real 66, 3°, 15003 A Coruña, Spain;
- Institute of Biomedical Research of A Coruña (INIBIC), Galician Health Service (SERGAS), University Hospital Complex A Coruña (CHUAC), 15006 A Coruña, Spain;
- Centro de Investigaciones Científicas Avanzadas (CICA), University of A Coruña, Rúa As Casballeiras, 15071 A Coruña, Spain
- Cell Therapy and Regenerative Medicine Group, Department of Physiotherapy, Medicine and Biomedical Sciences, Faculty of Health Sciences, University of A Coruña (UDC), 15006 A Coruña, Spain
| | - Silvia María Díaz Prado
- Institute of Biomedical Research of A Coruña (INIBIC), Galician Health Service (SERGAS), University Hospital Complex A Coruña (CHUAC), 15006 A Coruña, Spain;
- Centro de Investigaciones Científicas Avanzadas (CICA), University of A Coruña, Rúa As Casballeiras, 15071 A Coruña, Spain
- Cell Therapy and Regenerative Medicine Group, Department of Physiotherapy, Medicine and Biomedical Sciences, Faculty of Health Sciences, University of A Coruña (UDC), 15006 A Coruña, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Luca Ferrantino
- Department of Biomedical, Surgical, and Dental Sciences, University of Milan, 20122 Milan, Italy;
- Department of Aesthetic Dentistry, Istituto Stomatologico Italiano, 20122 Milan, Italy
| | - Josephine Kalm
- Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at University of Gothenburg, SE-405 30 Göteborg, Sweden; (J.K.); (L.L.)
| | - Lena Larsson
- Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at University of Gothenburg, SE-405 30 Göteborg, Sweden; (J.K.); (L.L.)
| | - Farah Asa’ad
- Department of Biomaterials, Institute of Clinical Sciences, The Sahlgrenska Academy at University of Gothenburg, SE-405 30 Göteborg, Sweden;
- Department of Oral Biochemistry, Institute of Odontology, The Sahlgrenska Academy at University of Gothenburg, SE-405 30 Göteborg, Sweden
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Marín-Hinojosa C, Eraso CC, Sanchez-Lopez V, Hernández LC, Otero-Candelera R, Lopez-Campos JL. Nutriepigenomics and chronic obstructive pulmonary disease: potential role of dietary and epigenetics factors in disease development and management. Am J Clin Nutr 2021; 114:1894-1906. [PMID: 34477827 DOI: 10.1093/ajcn/nqab267] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 07/22/2021] [Indexed: 12/15/2022] Open
Abstract
Over recent decades, a number of studies have revealed the possible role of different types of diets, as well as the nutritional elements they are made up of, in the pathogenesis of chronic obstructive pulmonary disease (COPD). To date, dietary factors have been identified to play a role in the prevention of COPD, with evidence from antioxidant nutrients, vitamins, and fiber intake. Additionally, certain dietary patterns such as the Mediterranean diet, together with other Western diets, provide evidence of the influence on COPD development, promoting lung health through nutritional approaches, and giving us an opportunity for intervention. The effect of diet on COPD is conveyed by 3 mechanisms: regulation of inflammation, oxidative stress, and carbon dioxide produced/oxygen intake. Current advances have begun to highlight the possible role of diet in modifying gene expression in certain individuals that predisposes them to COPD through epigenetic modifications. The relation between dietary intake and epigenetic factors has therefore outlined nutriepigenomics as a possible missing link in the relation between environmental exposure to smoke and the appearance of a subsequent chronic bronchial obstruction. This review summarizes the evidence regarding the influence of dietary patterns and nutrients and epigenetic regulatory mechanisms on COPD development and prevention with the aim of encouraging clinical research on the impact of dietary modifications on COPD-related clinical outcomes. This review highlights the importance of proposing and carrying out future studies focused on the modulating effects of certain nutrients on epigenetic changes in patients with specific COPD phenotypes (bronchiectasis, emphysema, asthma/COPD, chronic bronchitis), and their individual responses to cigarette smoking, environmental pollution, or other noxious particles. The objectives of these future studies must be directed to the development of novel therapeutic approaches and personalized management of COPD.
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Affiliation(s)
- Carmen Marín-Hinojosa
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Seville, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Candelaria Caballero Eraso
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Seville, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Veronica Sanchez-Lopez
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Seville, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Laura Carrasco Hernández
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Seville, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Remedios Otero-Candelera
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Seville, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Jose Luis Lopez-Campos
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Seville, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
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8
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Dietary Fibers: Effects, Underlying Mechanisms and Possible Role in Allergic Asthma Management. Nutrients 2021; 13:nu13114153. [PMID: 34836408 PMCID: PMC8621630 DOI: 10.3390/nu13114153] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/10/2021] [Accepted: 11/18/2021] [Indexed: 12/13/2022] Open
Abstract
The prevalence of asthma is increasing, but the cause remains under debate. Research currently focuses on environmental and dietary factors that may impact the gut-lung axis. Dietary fibers are considered to play a crucial role in supporting diversity and activity of the microbiome, as well as immune homeostasis in the gut and lung. This review discusses the current state of knowledge on how dietary fibers and their bacterial fermentation products may affect the pathophysiology of allergic asthma. Moreover, the impact of dietary fibers on early type 2 asthma management, as shown in both pre-clinical and clinical studies, is described. Short-chain fatty acids, fiber metabolites, modulate host immunity and might reduce the risk of allergic asthma development. Underlying mechanisms include G protein-coupled receptor activation and histone deacetylase inhibition. These results are supported by studies in mice, children and adults with allergic asthma. Fibers might also exert direct effects on the immune system via yet to be elucidated mechanisms. However, the effects of specific types of fiber, dosages, duration of treatment, and combination with probiotics, need to be explored. There is an urgent need to further valorize the potential of specific dietary fibers in prevention and treatment of allergic asthma by conducting more large-scale dietary intervention trials.
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Shen Y, Wang L, Wu Y, Ou Y, Lu H, Yao X. A novel diagnostic signature based on three circulating exosomal mircoRNAs for chronic obstructive pulmonary disease. Exp Ther Med 2021; 22:717. [PMID: 34007326 PMCID: PMC8120666 DOI: 10.3892/etm.2021.10149] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 03/18/2021] [Indexed: 12/15/2022] Open
Abstract
Exosomal microRNAs (exo-miRNAs or miRs) have demonstrated diagnostic value in various diseases. However, their diagnostic value in chronic obstructive pulmonary disease (COPD) has yet to be fully established. The purpose of the present study was to screen differentially expressed exo-miRNAs in the plasma of patients with COPD and healthy individuals and to evaluate their potential diagnostic value in COPD. Differentially expressed exo-miRNAs in the plasma of patients with COPD and controls were identified using high-throughput sequencing and confirmed using reverse transcription-quantitative PCR (RT-qPCR). Bioinformatics analysis was then performed to predict the function of the selected exo-miRNAs and their target genes in COPD. After a network model was constructed, linear regression analysis was performed to determine the association between exo-miRNA expression and the clinical characteristics of subjects in a validated cohort (46 COPD cases; 34 matched healthy controls). Receiver operating characteristic curve was subsequently plotted to test the diagnostic value of the candidate biomarkers. The top 20 significantly aberrantly expressed COPD-associated exo-miRNAs were verified using RT-qPCR. Of these, nine were then selected for subsequent analysis, five of which were found to be upregulated (miR-23a, miR-1, miR-574, miR-152 and miR-221) and four of which were downregulated (miR-3158, miR-7706, miR-685 and miR-144). The results of Gene Ontology and KEGG pathway analysis revealed that these miRNAs were mainly involved in certain biological functions, such as metabolic processes, such as galactose metabolism and signaling pathways (PI3K-AKT) associated with COPD. The expression levels of three exo-miRNAs (miR-23a, miR-221 and miR-574) were found to be negatively associated with the forced expiratory volume in the 1st second/forced vital capacity. Furthermore, the area under the curve values of the three exo-miRNAs (miR-23a, miR-221 and miR-574) for COPD diagnosis were 0.776 [95% confidence interval (CI), 0.669-0.882], 0.688 (95% CI, 0.563-0.812) and 0.842 (95% CI, 0.752-0.931), respectively. In conclusion, the three circulating exosomal miRNAs (miR-23a, miR-221 and miR-574) may serve as novel circulating biomarkers for the diagnosis of COPD. These results may also enhance our understanding and provide novel potential treatment options for patients with COPD.
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Affiliation(s)
- Yahui Shen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
- Department of Respiratory and Critical Care Medicine, Taizhou Clinical Medical School of Nanjing Medical University, Taizhou, Jiangsu 225300, P.R. China
| | - Lina Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Yunhui Wu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Yingwei Ou
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Huiyu Lu
- Department of Respiratory and Critical Care Medicine, Taizhou Clinical Medical School of Nanjing Medical University, Taizhou, Jiangsu 225300, P.R. China
| | - Xin Yao
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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10
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Santonocito S, Polizzi A, Palazzo G, Isola G. The Emerging Role of microRNA in Periodontitis: Pathophysiology, Clinical Potential and Future Molecular Perspectives. Int J Mol Sci 2021; 22:5456. [PMID: 34064286 PMCID: PMC8196859 DOI: 10.3390/ijms22115456] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/17/2021] [Accepted: 05/21/2021] [Indexed: 02/07/2023] Open
Abstract
During the last few decades, it has been established that messenger ribonucleic acid (mRNA) transcription does not inevitably lead to protein translation, but there are numerous processes involved in post-transcriptional regulation, which is a continuously developing field of research. MicroRNAs (miRNAs) are a group of small non-coding RNAs, which negatively regulate protein expression and are implicated in several physiological and pathological mechanisms. Aberrant expression of miRNAs triggers dysregulation of multiple cellular processes involved in innate and adaptive immune responses. For many years, it was thought that miRNAs acted only within the cell in which they were synthesised, but, recently, they have been found outside cells bound to lipids and proteins, or enclosed in extracellular vesicles, namely exosomes. They can circulate throughout the body, transferring information between cells and altering gene expression in the recipient cells, as they can fuse with and be internalised by the recipient cells. Numerous studies on miRNAs have been conducted in order to identify possible biomarkers that can be used in the diagnosis of periodontal disease. However, as therapeutic agents, single miRNAs can target several genes and influence multiple regulatory networks. The aim of this review was to examine the molecular role of miRNAs and exosomes in the pathophysiology of periodontal disease and to evaluate possible clinical and future implications for a personalised therapeutical approach.
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Affiliation(s)
| | | | | | - Gaetano Isola
- Department of General Surgery and Surgical-Medical Specialties, School of Dentistry, University of Catania, 95124 Catania, Italy; (S.S.); (A.P.); (G.P.)
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11
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Hernandez-Pacheco N, Vijverberg SJ, Herrera-Luis E, Li J, Sio YY, Granell R, Corrales A, Maroteau C, Lethem R, Perez-Garcia J, Farzan N, Repnik K, Gorenjak M, Soares P, Karimi L, Schieck M, Pérez-Méndez L, Berce V, Tavendale R, Eng C, Sardon O, Kull I, Mukhopadhyay S, Pirmohamed M, Verhamme KMC, Burchard EG, Kabesch M, Hawcutt DB, Melén E, Potočnik U, Chew FT, Tantisira KG, Turner S, Palmer CN, Flores C, Pino-Yanes M, Maitland-van der Zee AH. Genome-wide association study of asthma exacerbations despite inhaled corticosteroid use. Eur Respir J 2021; 57:2003388. [PMID: 33303529 PMCID: PMC8122045 DOI: 10.1183/13993003.03388-2020] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 11/09/2020] [Indexed: 02/07/2023]
Abstract
RATIONALE Substantial variability in response to asthma treatment with inhaled corticosteroids (ICS) has been described among individuals and populations, suggesting the contribution of genetic factors. Nonetheless, only a few genes have been identified to date. We aimed to identify genetic variants associated with asthma exacerbations despite ICS use in European children and young adults and to validate the findings in non-Europeans. Moreover, we explored whether a gene-set enrichment analysis could suggest potential novel asthma therapies. METHODS A genome-wide association study (GWAS) of asthma exacerbations was tested in 2681 children of European descent treated with ICS from eight studies. Suggestive association signals were followed up for replication in 538 European asthma patients. Further evaluation was performed in 1773 non-Europeans. Variants revealed by published GWAS were assessed for replication. Additionally, gene-set enrichment analysis focused on drugs was performed. RESULTS 10 independent variants were associated with asthma exacerbations despite ICS treatment in the discovery phase (p≤5×10-6). Of those, one variant at the CACNA2D3-WNT5A locus was nominally replicated in Europeans (rs67026078; p=0.010), but this was not validated in non-European populations. Five other genes associated with ICS response in previous studies were replicated. Additionally, an enrichment of associations in genes regulated by trichostatin A treatment was found. CONCLUSIONS The intergenic region of CACNA2D3 and WNT5A was revealed as a novel locus for asthma exacerbations despite ICS treatment in European populations. Genes associated were related to trichostatin A, suggesting that this drug could regulate the molecular mechanisms involved in treatment response.
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Affiliation(s)
- Natalia Hernandez-Pacheco
- Research Unit, Hospital Universitario N.S. de Candelaria, Universidad de La Laguna, Santa Cruz de Tenerife, Spain
- Genomics and Health Group, Dept of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Susanne J Vijverberg
- Dept of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Division of Pharmacoepidemiology and Clinical Pharmacology, Faculty of Science, Utrecht University, Utrecht, The Netherlands
- Dept of Paediatric Respiratory Medicine and Allergy, Emma's Children Hospital, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Esther Herrera-Luis
- Genomics and Health Group, Dept of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Jiang Li
- The Channing Division of Network Medicine, Dept of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Yang Yie Sio
- Dept of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Raquel Granell
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Almudena Corrales
- Research Unit, Hospital Universitario N.S. de Candelaria, Universidad de La Laguna, Santa Cruz de Tenerife, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Cyrielle Maroteau
- Division of Population Health and Genomics, School of Medicine, University of Dundee, Dundee, UK
| | - Ryan Lethem
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Javier Perez-Garcia
- Genomics and Health Group, Dept of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Niloufar Farzan
- Dept of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Division of Pharmacoepidemiology and Clinical Pharmacology, Faculty of Science, Utrecht University, Utrecht, The Netherlands
- Breathomix B.V., El Reeuwijk, The Netherlands
| | - Katja Repnik
- Center for Human Molecular Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Maribor, Slovenia
- Laboratory for Biochemistry, Molecular Biology and Genomics, Faculty for Chemistry and Chemical Engineering, University of Maribor, Maribor, Slovenia
| | - Mario Gorenjak
- Center for Human Molecular Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Maribor, Slovenia
| | - Patricia Soares
- Academic Dept of Paediatrics, Brighton and Sussex Medical School, Royal Alexandra Children's Hospital, Brighton, UK
- Escola Nacional de Saúde Pública, Lisboa, Portugal
| | - Leila Karimi
- Dept of Medical Informatics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Maximilian Schieck
- Dept of Paediatric Pneumology and Allergy, University Children's Hospital Regensburg (KUNO), Regensburg, Germany
- Dept of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Lina Pérez-Méndez
- Research Unit, Hospital Universitario N.S. de Candelaria, Universidad de La Laguna, Santa Cruz de Tenerife, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- Dept of Clinic Epidemiology and Biostatistics, Research Unit, Hospital Universitario N.S. de Candelaria, Gerencia de Atención Primaria, Santa Cruz de Tenerife, Spain
| | - Vojko Berce
- Center for Human Molecular Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Maribor, Slovenia
- Dept of Paediatrics, University Medical Centre Maribor, Maribor, Slovenia
| | - Roger Tavendale
- Population Pharmacogenetics Group, Biomedical Research Institute, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - Celeste Eng
- Dept of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Olaia Sardon
- Division of Paediatric Respiratory Medicine, Hospital Universitario Donostia, San Sebastián, Spain
- Dept of Paediatrics, University of the Basque Country (UPV/EHU), San Sebastián, Spain
| | - Inger Kull
- Dept of Clinical Sciences and Education Södersjukhuset, Karolinska Institutet and Sachs' Children's Hospital, Stockholm, Sweden
| | - Somnath Mukhopadhyay
- Academic Dept of Paediatrics, Brighton and Sussex Medical School, Royal Alexandra Children's Hospital, Brighton, UK
- Population Pharmacogenetics Group, Biomedical Research Institute, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - Munir Pirmohamed
- Dept of Molecular and Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Katia M C Verhamme
- Dept of Medical Informatics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Esteban G Burchard
- Dept of Medicine, University of California, San Francisco, San Francisco, CA, USA
- Dept of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Michael Kabesch
- Dept of Paediatric Pneumology and Allergy, University Children's Hospital Regensburg (KUNO), Regensburg, Germany
| | - Daniel B Hawcutt
- Dept of Women's and Children's Health, University of Liverpool, Liverpool, UK
- Alder Hey Children's Hospital, Liverpool, UK
| | - Erik Melén
- Dept of Clinical Sciences and Education Södersjukhuset, Karolinska Institutet and Sachs' Children's Hospital, Stockholm, Sweden
- Institute of Environmental Medicine, Karolinska Institutet, Solna, Sweden
| | - Uroš Potočnik
- Center for Human Molecular Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Maribor, Slovenia
- Laboratory for Biochemistry, Molecular Biology and Genomics, Faculty for Chemistry and Chemical Engineering, University of Maribor, Maribor, Slovenia
| | - Fook Tim Chew
- Dept of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Kelan G Tantisira
- The Channing Division of Network Medicine, Dept of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Division of Pulmonary and Critical Care Medicine, Dept of Medicine, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA, USA
| | - Steve Turner
- Child Health, University of Aberdeen, Aberdeen, UK
| | - Colin N Palmer
- Population Pharmacogenetics Group, Biomedical Research Institute, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - Carlos Flores
- Research Unit, Hospital Universitario N.S. de Candelaria, Universidad de La Laguna, Santa Cruz de Tenerife, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Santa Cruz de Tenerife, Spain
- Instituto de Tecnologías Biomédicas (ITB), Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Maria Pino-Yanes
- Research Unit, Hospital Universitario N.S. de Candelaria, Universidad de La Laguna, Santa Cruz de Tenerife, Spain
- Genomics and Health Group, Dept of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- Instituto de Tecnologías Biomédicas (ITB), Universidad de La Laguna, San Cristóbal de La Laguna, Spain
- These authors contributed equally to this work
| | - Anke H Maitland-van der Zee
- Dept of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Division of Pharmacoepidemiology and Clinical Pharmacology, Faculty of Science, Utrecht University, Utrecht, The Netherlands
- Dept of Paediatric Respiratory Medicine and Allergy, Emma's Children Hospital, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- These authors contributed equally to this work
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12
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Rouka E, Gourgoulianis KI, Zarogiannis SG. In silico investigation of the viroporin E as a vaccine target against SARS-CoV-2. Am J Physiol Lung Cell Mol Physiol 2021; 320:L1057-L1063. [PMID: 33822639 PMCID: PMC8203416 DOI: 10.1152/ajplung.00443.2020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Viroporins, integral viral membrane ion channel proteins, interact with host-cell proteins deregulating physiological processes and activating inflammasomes. Severity of COVID-19 might be associated with hyperinflammation, thus we aimed at the complete immunoinformatic analysis of the SARS-CoV-2 viroporin E, P0DTC4. We also identified the human proteins interacting with P0DTC4 and the enriched molecular functions of the corresponding genes. The complete sequence of P0DTC4 in FASTA format was processed in 10 databases relative to secondary and tertiary protein structure analyses and prediction of optimal vaccine epitopes. Three more databases were accessed for the retrieval and the molecular functional characterization of the P0DTC4 human interactors. The immunoinformatics analysis resulted in the identification of 4 discontinuous B-cell epitopes along with 1 linear B-cell epitope and 11 T-cell epitopes which were found to be antigenic, immunogenic, nonallergen, nontoxin, and unable to induce autoimmunity thus fulfilling prerequisites for vaccine design. The functional enrichment analysis showed that the predicted host interactors of P0DTC4 target the cellular acetylation network. Two of the identified host-cell proteins – BRD2 and BRD4 – have been shown to be promising targets for antiviral therapy. Thus, our findings have implications for COVID-19 therapy and indicate that viroporin E could serve as a promising vaccine target against SARS-CoV-2. Validation experiments are required to complement these in silico results.
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Affiliation(s)
- Erasmia Rouka
- Department of Respiratory Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, BIOPOLIS, Larissa, Greece.,Department of Physiology, Faculty of Medicine, School of Health Sciences, University of Thessaly, BIOPOLIS, Larissa, Greece
| | - Konstantinos I Gourgoulianis
- Department of Respiratory Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, BIOPOLIS, Larissa, Greece
| | - Sotirios G Zarogiannis
- Department of Respiratory Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, BIOPOLIS, Larissa, Greece.,Department of Physiology, Faculty of Medicine, School of Health Sciences, University of Thessaly, BIOPOLIS, Larissa, Greece
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13
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Saleh HA, Yousef MH, Abdelnaser A. The Anti-Inflammatory Properties of Phytochemicals and Their Effects on Epigenetic Mechanisms Involved in TLR4/NF-κB-Mediated Inflammation. Front Immunol 2021; 12:606069. [PMID: 33868227 PMCID: PMC8044831 DOI: 10.3389/fimmu.2021.606069] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 03/08/2021] [Indexed: 12/11/2022] Open
Abstract
Innate immune response induces positive inflammatory transducers and regulators in order to attack pathogens, while simultaneously negative signaling regulators are transcribed to maintain innate immune homeostasis and to avoid persistent inflammatory immune responses. The gene expression of many of these regulators is controlled by different epigenetic modifications. The remarkable impact of epigenetic changes in inducing or suppressing inflammatory signaling is being increasingly recognized. Several studies have highlighted the interplay of histone modification, DNA methylation, and post-transcriptional miRNA-mediated modifications in inflammatory diseases, and inflammation-mediated tumorigenesis. Targeting these epigenetic alterations affords the opportunity of attenuating different inflammatory dysregulations. In this regard, many studies have identified the significant anti-inflammatory properties of distinct naturally-derived phytochemicals, and revealed their regulatory capacity. In the current review, we demonstrate the signaling cascade during the immune response and the epigenetic modifications that take place during inflammation. Moreover, we also provide an updated overview of phytochemicals that target these mechanisms in macrophages and other experimental models, and go on to illustrate the effects of these phytochemicals in regulating epigenetic mechanisms and attenuating aberrant inflammation.
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Affiliation(s)
- Haidy A. Saleh
- Department of Chemistry, School of Sciences and Engineering, The American University in Cairo, Cairo, Egypt
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
| | - Mohamed H. Yousef
- Biotechnology Graduate Program, School of Sciences and Engineering, The American University in Cairo, Cairo, Egypt
| | - Anwar Abdelnaser
- Institute of Global Public Health, School of Sciences and Engineering, The American University in Cairo, Cairo, Egypt
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14
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Liu T, Sun Y, Bai W. The Role of Epigenetics in the Chronic Sinusitis with Nasal Polyp. Curr Allergy Asthma Rep 2020; 21:1. [PMID: 33236242 DOI: 10.1007/s11882-020-00976-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/24/2020] [Indexed: 12/13/2022]
Abstract
PURPOSE OF REVIEW Chronic rhinosinusitis with nasal polyps (CRSwNP) is a common and heterogeneous inflammatory disease. The underlying epigenetic mechanisms and treatment of CRSwNP are partially understood. Of the different epigenetic changes in CRSwNP, histone deacetylases (HDACs), methylation of DNA, and the levels of miRNA are widely studied. Here, we review the human studies of epigenetic mechanisms in CRSwNP. RECENT FINDINGS The promoters of COL18A1, PTGES, PLAT, and TSLP genes are hypermethylated in CRSwNP compared with those of controls, while the promoters of PGDS, ALOX5AP, LTB4R, IL-8, and FZD5 genes are hypomethylated in CRSwNP. Promoter hypermethylation suppresses the gene expression, while promoter hypomethylation increases the gene expression. Studies have shown the elevation in the levels of HDAC2, HDAC4, and H3K4me3 in CRSwNP. In CRSwNP patients, there is also an upregulation of certain miRNAs including miR-125b, miR-155, miR-19a, miR-142-3p, and miR-21 and downregulation of miR-4492. Epigenetics takes part in the immunology of CRSwNP and may give rise to endotypes of CRSwNP. Both HDAC2 and the miRNA including miR-18a, miR-124a, and miR-142-3p may take function in the regulation of glucocorticoid resistance. HDAC inhibitors and KDM2B have shown effectiveness in decreasing nasal polyp, and DNA methyltransferase (DNMT) or HDAC inhibitors may have a potential efficacy for the treatment of CRSwNP. Recent advances in the epigenetics of CRSwNP have led to the identification of several potential therapeutic targets for this disease. The use of epigenetics may provide novel and effective biomarkers and therapies for the treatment of nasal polyp.
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Affiliation(s)
- Tiancong Liu
- Department of Otolaryngology Head and Neck Surgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China
| | - Yang Sun
- Department of Otolaryngology Head and Neck Surgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China
| | - Weiliang Bai
- Department of Otolaryngology Head and Neck Surgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
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15
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Seiler CL, Song JUM, Kotandeniya D, Chen J, Kono TJY, Han Q, Colwell M, Auch B, Sarver AL, Upadhyaya P, Ren Y, Faulk C, De Flora S, La Maestra S, Chen Y, Kassie F, Tretyakova NY. Inhalation exposure to cigarette smoke and inflammatory agents induces epigenetic changes in the lung. Sci Rep 2020; 10:11290. [PMID: 32647312 PMCID: PMC7347915 DOI: 10.1038/s41598-020-67502-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 06/09/2020] [Indexed: 01/05/2023] Open
Abstract
Smoking-related lung tumors are characterized by profound epigenetic changes including scrambled patterns of DNA methylation, deregulated histone acetylation, altered gene expression levels, distorted microRNA profiles, and a global loss of cytosine hydroxymethylation marks. Here, we employed an enhanced version of bisulfite sequencing (RRBS/oxRRBS) followed by next generation sequencing to separately map DNA epigenetic marks 5-methyl-dC and 5-hydroxymethyl-dC in genomic DNA isolated from lungs of A/J mice exposed whole-body to environmental cigarette smoke for 10 weeks. Exposure to cigarette smoke significantly affected the patterns of cytosine methylation and hydroxymethylation in the lungs. Differentially hydroxymethylated regions were associated with inflammatory response/disease, organismal injury, and respiratory diseases and were involved in regulation of cellular development, function, growth, and proliferation. To identify epigenetic changes in the lung associated with exposure to tobacco carcinogens and inflammation, A/J mice were intranasally treated with the tobacco carcinogen 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK), the inflammatory agent lipopolysaccharide (LPS), or both. NNK alone caused minimal epigenetic alterations, while exposure either to LPS or NNK/LPS in combination led to increased levels of global cytosine methylation and formylation, reduced cytosine hydroxymethylation, decreased histone acetylation, and altered expression levels of multiple genes. Our results suggest that inflammatory processes are responsible for epigenetic changes contributing to lung cancer development.
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Affiliation(s)
- Christopher L Seiler
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, 55455, USA
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, 2-147 CCRB, Minneapolis, 55455, USA
| | - J Ung Min Song
- Department of Veterinary Medicine, University of Minnesota, Minneapolis, MN, 55455, USA
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, 2-147 CCRB, Minneapolis, 55455, USA
| | - Delshanee Kotandeniya
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, 55455, USA
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, 2-147 CCRB, Minneapolis, 55455, USA
| | - Jianji Chen
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Thomas J Y Kono
- Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Qiyuan Han
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Mathia Colwell
- Department of Animal Science, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Benjamin Auch
- Genomics Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Aaron L Sarver
- Institute for Health Informatics, University of Minnesota, Minneapolis, MN, 55455, USA
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, 2-147 CCRB, Minneapolis, 55455, USA
| | - Pramod Upadhyaya
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, 2-147 CCRB, Minneapolis, 55455, USA
| | - Yanan Ren
- Biostatistics Core, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Christopher Faulk
- Department of Animal Science, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Silvio De Flora
- Department of Health Sciences, University of Genoa, 16132, Genoa, Italy
| | | | - Yue Chen
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Fekadu Kassie
- Department of Veterinary Medicine, University of Minnesota, Minneapolis, MN, 55455, USA
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, 2-147 CCRB, Minneapolis, 55455, USA
| | - Natalia Y Tretyakova
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, 55455, USA.
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, 2-147 CCRB, Minneapolis, 55455, USA.
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16
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Zhang L, Valizadeh H, Alipourfard I, Bidares R, Aghebati-Maleki L, Ahmadi M. Epigenetic Modifications and Therapy in Chronic Obstructive Pulmonary Disease (COPD): An Update Review. COPD 2020; 17:333-342. [PMID: 32558592 DOI: 10.1080/15412555.2020.1780576] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) that is one of the most prevalent chronic adult diseases and the third leading cause of fatality until 2020. Elastase/anti-elastase hypothesis, chronic inflammation, apoptosis, oxidant-antioxidant balance and infective repair cause pathogenesis of COPD are among the factors at play. Epigenetic changes are post-translational modifications in histone proteins and DNA such as methylation and acetylation as well as dysregulation of miRNAs expression. In this update review, we have examined recent studies on the upregulation or downregulation of methylation in different genes associated with COPD. Dysregulation of HDAC activity which is caused by some factors and miRNAs plays a key role in the suppression and reduction of COPD development. Also, some therapeutic approaches are proposed against COPD by targeting HDAC2 and miRNAs, which have therapeutic effects.
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Affiliation(s)
- Lingzhi Zhang
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Hamed Valizadeh
- Department of Internal Medicine and Pulmonology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran.,Tuberculosis and Lung Disease Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Iraj Alipourfard
- Faculty of Life Sciences, Center of pharmaceutical sciences, University of Vienna, Vienna, Austria.,Faculty of Sciences, School of Pharmacy, University of Rome Tor Vergata, Roma, Italy
| | - Ramtin Bidares
- Department of Experimental Medicine, Sapienza University, Rome, Italy
| | | | - Majid Ahmadi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
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17
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Expression of MicroRNAs in Periodontal and Peri-Implant Diseases: A Systematic Review and Meta-Analysis. Int J Mol Sci 2020; 21:ijms21114147. [PMID: 32532036 PMCID: PMC7312949 DOI: 10.3390/ijms21114147] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/05/2020] [Accepted: 06/07/2020] [Indexed: 12/15/2022] Open
Abstract
AIM The purpose of this review was to evaluate the expression patterns of miRNAs in periodontal and peri-implant diseases, while identifying potential miRNAs with the greatest diagnostic ability as an oral fluid biomarker. MATERIALS AND METHODS Human and animal studies were included when evaluating expression of miRNAs between health and different forms/stages of diseases, in which microarray and/or real-time polymerase chain reaction (RT-PCR) was carried out to detect fold changes in gene expression. After full-text analysis, 43 articles were considered for a qualitative assessment, and 16 miRNAs were selected to perform meta-analysis. RESULTS Based on human studies, results showed an overall upregulation of most of the evaluated miRNAs in periodontitis, with miRNA-142-3p and miRNA-146a being the most conclusive on both microarray and RT-PCR values and potentially serving as diagnostic biomarkers for disease activity. Conversely, miR-155 was the only miRNA revealing a statistically significant difference (SSD) (p < 0.05*) in experimental periodontitis models from RT-PCR values. Scarce scientific evidence is available from peri-implant diseases, however, most explored miRNAs in peri-implantitis were downregulated except for miR-145. CONCLUSIONS Although our results revealed that a distinct differential expression of specific miRNAs can be noted between the state of health and disease, future research remains necessary to explore the functional role of specific miRNAs and their potential as therapeutic targets in periodontal and peri-implant diseases. MeSH Terms: periodontitis, peri-implantitis, epigenomics, microarray analysis, real-time polymerase chain reaction, microRNAs. CLINICAL RELEVANCE Scientific background: Although most research identified different expression levels of miRNAs in periodontal and peri-implant diseases compared to their counterparts, their actual role in the pathogenesis of these conditions remains unclear. Therefore, we aimed to present a systematic review and meta-analysis on the expression patterns of miRNAs in periodontitis and peri-implantitis, while identifying potential miRNAs with the greatest diagnostic ability as an oral fluid biomarker. PRINCIPAL FINDINGS In periodontitis-related studies, miRNA-142-3p and miRNA-146a were the most conclusive on both microarray and RT-PCR values. Scarce scientific evidence is available from peri-implant diseases. PRACTICAL IMPLICATIONS Both miRNA-142-3p and miRNA-146a might serve as future diagnostic biomarkers for disease activity in periodontitis. Yet, future research remains necessary to explore the functional role of specific miRNAs and their potential as therapeutic targets in periodontal and peri-implant diseases.
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Asa'ad F, Monje A, Larsson L. Role of epigenetics in alveolar bone resorption and regeneration around periodontal and peri‐implant tissues. Eur J Oral Sci 2019; 127:477-493. [DOI: 10.1111/eos.12657] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Farah Asa'ad
- Institute of Odontology The Sahlgrenska Academy University of Gothenburg Göteborg Sweden
| | - Alberto Monje
- Department of Oral Surgery and Stomatology ZMK School of Dentistry Bern Switzerland
- Department of Periodontology Universitat Internacional de Catalunya Barcelona Spain
| | - Lena Larsson
- Department of Periodontology Institute of Odontology University of Gothenburg Göteborg Sweden
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19
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Kim J, Kim DY, Heo HR, Choi SS, Hong SH, Kim WJ. Role of miRNA-181a-2-3p in cadmium-induced inflammatory responses of human bronchial epithelial cells. J Thorac Dis 2019; 11:3055-3069. [PMID: 31463135 DOI: 10.21037/jtd.2019.07.55] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background Inflammation is an important priming event in the pathogenesis of pulmonary diseases, including chronic obstructive pulmonary disease (COPD). Increasing evidence indicates that microRNAs (miRNAs) contribute to the pathogenesis of COPD by regulating inflammatory response. Therefore, it is necessary to investigate novel molecular targets in COPD without any validation in COPD samples in airway inflammation. The aim of our study is to reveal novel miRNAs that can influence molecular targets for COPD and to examine the underlying mechanism in airway inflammation. Methods We identified the downregulation of miR-181a-2-3p in the serum of COPD patients and further investigated the role of miR-181a-2-3p in cadmium (Cd)-induced inflammation of a human bronchial epithelial cell line (BEAS-2B) and normal human bronchial epithelial (NHBE) cells. Results Our results showed that expression of miR-181a-2-3p was significantly decreased in Cd-treated cells and silencing of miR-181a-2-3p enhanced Cd-induced inflammatory responses and inflammasome activation. This negative regulatory effect of miR-181a-2-3p on inflammation is partly mediated by the calcium signaling pathway. Furthermore, global gene expression profiling revealed that Toll-like receptor 4 or sequestosome 1 genes were identified as potential targets of miR-181a-2-3p, which were significantly upregulated by knockdown of miR-181a-2-3p in Cd-treated cells. Conclusions Our results strongly suggest that miR-181a-2-3p has a critical role in Cd-induced inflammation of airway by regulating its potential target genes, which could be molecular targets for COPD.
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Affiliation(s)
- Jeeyoung Kim
- Department of Internal Medicine and Environmental Health Center, Kangwon National University Hospital, Chuncheon, South Korea
| | - Dong Yeop Kim
- Division of Biomedical Convergence, College of Biomedical Science, and Institute of Bioscience & Biotechnology, Kangwon National University, Chuncheon, South Korea
| | - Hye-Ryeon Heo
- Department of Internal Medicine and Environmental Health Center, Kangwon National University Hospital, Chuncheon, South Korea
| | - Sun Shim Choi
- Division of Biomedical Convergence, College of Biomedical Science, and Institute of Bioscience & Biotechnology, Kangwon National University, Chuncheon, South Korea
| | - Seok-Ho Hong
- Department of Internal Medicine and Environmental Health Center, Kangwon National University Hospital, Chuncheon, South Korea
| | - Woo Jin Kim
- Department of Internal Medicine and Environmental Health Center, Kangwon National University Hospital, Chuncheon, South Korea
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20
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Vereen S, Gebretsadik T, Johnson N, Hartman TJ, Veeranki SP, Piyathilake C, Mitchel EF, Kocak M, Cooper WO, Dupont WD, Tylavsky F, Carroll KN. Association Between Maternal 2nd Trimester Plasma Folate Levels and Infant Bronchiolitis. Matern Child Health J 2019; 23:164-172. [PMID: 30027465 DOI: 10.1007/s10995-018-2610-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Objectives Viral bronchiolitis is the most common cause of infant hospitalization. Folic acid supplementation is important during the periconceptional period to prevent neural tube defects. An area of investigation is whether higher prenatal folate is a risk factor for childhood respiratory illnesses. We investigated the association between maternal 2nd trimester plasma folate levels and infant bronchiolitis. Methods We conducted a retrospective cohort analysis in a subset of mother-infant dyads (n = 676) enrolled in the Conditions Affecting Neurocognitive Development and Learning in Early Childhood study and Tennessee Medicaid. Maternal folate status was determined using 2nd trimester (16-28 weeks) plasma samples. Bronchiolitis diagnosis in the first year of life was ascertained using International Classification of Diagnosis-9 codes from Medicaid administrative data. We used multivariable logistic regression to assess the adjusted association of prenatal folate levels and infant bronchiolitis outcome. Results Half of the women in this lower-income and predominately African-American (84%) study population had high levels of folate (median 2nd trimester level 19.2 ng/mL) and 21% of infants had at least one bronchiolitis healthcare visit. A relationship initially positive then reversing between maternal plasma folate and infant bronchiolitis was observed that did not reach statistical significance (poverall = .112, pnonlinear effect = .088). Additional adjustment for dietary methyl donor intake did not significantly alter the association. Conclusions for Practice Results did not confirm a statistically significant association between maternal 2nd trimester plasma folate levels and infant bronchiolitis. Further work is needed to investigate the role of folate, particularly higher levels, in association with early childhood respiratory illnesses.
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Affiliation(s)
- Shanda Vereen
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA.,Divisions of General Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Asthma Health Research, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Tebeb Gebretsadik
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Asthma Health Research, Vanderbilt University Medical Center, Nashville, TN, USA
| | | | - Terryl J Hartman
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Sreenivas P Veeranki
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA.,Divisions of General Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Asthma Health Research, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Chandrika Piyathilake
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Edward F Mitchel
- Department of Health Policy, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Mehmet Kocak
- Department of Preventive Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - William O Cooper
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA.,Divisions of General Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - William D Dupont
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Asthma Health Research, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Frances Tylavsky
- Department of Preventive Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Kecia N Carroll
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA. .,Divisions of General Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA. .,Center for Asthma Health Research, Vanderbilt University Medical Center, Nashville, TN, USA. .,Vanderbilt University School of Medicine, 313 Oxford House, 1313 21st Avenue South, Nashville, TN, 37232-4313, USA.
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Wadhwa R, Aggarwal T, Malyla V, Kumar N, Gupta G, Chellappan DK, Dureja H, Mehta M, Satija S, Gulati M, Maurya PK, Collet T, Hansbro PM, Dua K. Identification of biomarkers and genetic approaches toward chronic obstructive pulmonary disease. J Cell Physiol 2019; 234:16703-16723. [DOI: 10.1002/jcp.28482] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 02/10/2019] [Accepted: 02/14/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Ridhima Wadhwa
- Faculty of Life Sciences and Biotechnology South Asian University New Delhi India
| | - Taru Aggarwal
- Amity Institute of Biotechnology Amity University Noida Uttar Pradesh India
| | - Vamshikrishna Malyla
- Discipline of Pharmacy, Graduate School of Health University of Technology Sydney New South Wales Australia
- Centre for Inflammation Centenary Institute Sydney New South Wales Australia
| | - Nitesh Kumar
- Amity Institute for Advanced Research & Studies (M&D) Amity University Noida Uttar Pradesh India
| | - Gaurav Gupta
- School of Pharmaceutical Sciences Jaipur National University, Jagatpura Jaipur Rajasthan India
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy International Medical University Bukit Jalil Kuala Lumpur Malaysia
| | - Harish Dureja
- Department of Pharmaceutical Sciences Maharishi Dayanand University Rohtak Haryana India
| | - Meenu Mehta
- School of Pharmaceutical Sciences Lovely Professional University Phagwara Punjab India
| | - Saurabh Satija
- School of Pharmaceutical Sciences Lovely Professional University Phagwara Punjab India
| | - Monica Gulati
- School of Pharmaceutical Sciences Lovely Professional University Phagwara Punjab India
| | - Pawan Kumar Maurya
- Department of Biochemistry Central University of Haryana Mahendergarh Haryana India
| | - Trudi Collet
- Innovative Medicines Group, Institute of Health & Biomedical Innovation Queensland University of Technology Brisbane Queensland Australia
| | - Philip Michael Hansbro
- Priority Research Centre for Healthy Lungs University of Newcastle & Hunter Medical Research Institute Newcastle New South Wales Australia
- Centre for Inflammation Centenary Institute Sydney New South Wales Australia
- School of Life Sciences University of Technology Sydney Sydney New South Wales Australia
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health University of Technology Sydney New South Wales Australia
- Priority Research Centre for Healthy Lungs University of Newcastle & Hunter Medical Research Institute Newcastle New South Wales Australia
- Centre for Inflammation Centenary Institute Sydney New South Wales Australia
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22
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MyD88 hypermethylation mediated by DNMT1 is associated with LTA-induced inflammatory response in human odontoblast-like cells. Cell Tissue Res 2019; 376:413-423. [PMID: 30707290 DOI: 10.1007/s00441-019-02993-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Accepted: 01/12/2019] [Indexed: 12/22/2022]
Abstract
Dental caries is a chronic, infectious, and destructive disease that allows bacteria to break into the dental pulp tissue. As caries-related bacteria invade the human dentinal tubules, odontoblasts are the first line of dental pulp that trigger the initial inflammatory and immune responses. DNA methylation is a key epigenetic modification that plays a fundamental role in gene transcription, and its role in inflammation-related diseases has recently attracted attention. However, whether DNA methylation regulates the inflammatory response of human odontoblasts is still unknown. In the present study, we investigated the expression of DNA methyltransferase (DNMT)-1 in lipoteichoic acid (LTA)-stimulated human odontoblast-like cells (hOBs) and found that DNMT1 expression showed a decline that is contrary to the transcription of inflammatory cytokines. Knockdown of the DNMT1 gene increased the expression of several cytokines, including IL-6 and IL-8, in the LTA-induced inflammatory response. DNMT1 knockdown increased the phosphorylation of IKKα/β, IκBα, and p65 in the NF-κB pathway and the phosphorylation of p38 and ERK in the MAPK pathway; however, only the NF-κB pathway inhibitor PDTC suppressed both IL-6 and IL-8 expression, whereas inhibitors of the MAPK pathway (U0126, SB2035580, and SP600125) did not. Furthermore, DNMT1 knockdown upregulated the expression of MyD88 and TRAF6 but only attenuated the MyD88 gene promoter methylation in LTA-treated hOBs. Taken together, these results demonstrated that DNMT1 depletion caused hypomethylation and upregulation of MyD88, which resulted in activation of the NF-κB pathway and the subsequent release of LTA-induced inflammatory cytokines in hOBs. This study emphasizes the critical role of DNA methylation in the immune defense of odontoblasts when dental pulp reacted to caries.
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Sun W, Xiao B, Jia A, Qiu L, Zeng Q, Liu D, Yuan Y, Jia J, Zhang X, Xiang X. MBD2-mediated Th17 differentiation in severe asthma is associated with impaired SOCS3 expression. Exp Cell Res 2018; 371:196-204. [PMID: 30098334 DOI: 10.1016/j.yexcr.2018.08.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 08/05/2018] [Accepted: 08/07/2018] [Indexed: 01/28/2023]
Abstract
T helper 17 (Th17) cells has proven to be crucial in the pathogenesis of severe asthma. Although it is known that Suppressor of cytokine signaling 3 (SOCS3) is involved in differentiation of Th17 cells but, how it affects severe asthma is uncertain. Since previous studies indicated that Methtyl-CpG binding domain protein 2 (MBD2) null mice was deficient in Th17 cell differentiation, the aim of the present study was to understand how MBD2 interacts with SOCS3 to regulate Th17 cell differentiation in severe asthma. Here, we show that SOCS3 expression was significantly decreased in Th17-mediated severe asthmatic mice, accompanied by elevated STAT3 phosphorylation and RORγt expression. Knock-down of SOCS3 promoted the differentiation of naïve T cells into Th17 cells through STAT3/RORγt pathway. Meanwhile, MBD2 was overexpressed in Th17-mediated severe asthmatic mice. Intervention of MBD2 expression lead to a negative change of SOCS3 expression, whereas the differentiation of Th17 cells showed positive change. In addition, MBD2 knockout (MBD2-KO) mice displayed increased SOCS3 expression and decreased Th17 differentiation after severe asthma modeling. Taken together, our results suggest that MBD2 might facilitate Th17 cell differentiation via down-regulating SOCS3 expression in severe asthma. These findings uncover new roles for SOCS3 and MBD2, and provide a potential target for treatment of severe asthma.
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Affiliation(s)
- Wenjin Sun
- Department of Respiratory Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China; Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China; Hunan Diagnosis and Treatment Center of Respiratory Disease, Changsha, Hunan 410011, China
| | - Bing Xiao
- Department of Emergency, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China; Institute of Emergency and Difficult Diseases, Central South University, Changsha, Hunan 410011, China
| | - Aijun Jia
- Department of Respiratory Medicine, The Affiliated Hospital of Guilin Medical University, Guilin 541001, China
| | - Lulu Qiu
- Department of Respiratory Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China; Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China; Hunan Diagnosis and Treatment Center of Respiratory Disease, Changsha, Hunan 410011, China
| | - Qingping Zeng
- Department of Respiratory Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China; Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China; Hunan Diagnosis and Treatment Center of Respiratory Disease, Changsha, Hunan 410011, China
| | - Da Liu
- Department of Respiratory Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China; Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China; Hunan Diagnosis and Treatment Center of Respiratory Disease, Changsha, Hunan 410011, China
| | - Yu Yuan
- Department of Respiratory Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China; Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China; Hunan Diagnosis and Treatment Center of Respiratory Disease, Changsha, Hunan 410011, China
| | - Jingsi Jia
- Department of Respiratory Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China; Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China; Hunan Diagnosis and Treatment Center of Respiratory Disease, Changsha, Hunan 410011, China
| | - Xiufeng Zhang
- Department of Respiratory Medicine, The Second Hospital, University of South China, 30 Jiefang Road, Hengyang, Hunan 421001, China.
| | - Xudong Xiang
- Department of Emergency, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China; Institute of Emergency and Difficult Diseases, Central South University, Changsha, Hunan 410011, China.
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Abstract
Serotonin (5-hydroxytryptamine, 5-HT)2A receptor agonists have recently emerged as promising new treatment options for a variety of disorders. The recent success of these agonists, also known as psychedelics, like psilocybin for the treatment of anxiety, depression, obsessive-compulsive disorder (OCD), and addiction, has ushered in a renaissance in the way these compounds are perceived in the medical community and populace at large. One emerging therapeutic area that holds significant promise is their use as anti-inflammatory agents. Activation of 5-HT2A receptors produces potent anti-inflammatory effects in animal models of human inflammatory disorders at sub-behavioural levels. This review discusses the role of the 5-HT2A receptor in the inflammatory response, as well as highlight studies using the 5-HT2A agonist (R)-2,5-dimethoxy-4-iodoamphetamine [(R)-DOI] to treat inflammation in cellular and animal models. It also examines potential mechanisms by which 5-HT2A agonists produce their therapeutic effects. Overall, psychedelics regulate inflammatory pathways via novel mechanisms, and may represent a new and exciting treatment strategy for several inflammatory disorders.
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Affiliation(s)
- Thomas W Flanagan
- a Department of Pharmacology and Experimental Therapeutics , Louisiana State University Health Sciences Center , New Orleans , LA , USA
| | - Charles D Nichols
- a Department of Pharmacology and Experimental Therapeutics , Louisiana State University Health Sciences Center , New Orleans , LA , USA
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Mohammadi A, Sharifi A, Pourpaknia R, Mohammadian S, Sahebkar A. Manipulating macrophage polarization and function using classical HDAC inhibitors: Implications for autoimmunity and inflammation. Crit Rev Oncol Hematol 2018; 128:1-18. [DOI: 10.1016/j.critrevonc.2018.05.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/18/2018] [Accepted: 05/10/2018] [Indexed: 02/06/2023] Open
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Wu DD, Song J, Bartel S, Krauss-Etschmann S, Rots MG, Hylkema MN. The potential for targeted rewriting of epigenetic marks in COPD as a new therapeutic approach. Pharmacol Ther 2018; 182:1-14. [PMID: 28830839 DOI: 10.1016/j.pharmthera.2017.08.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) is an age and smoking related progressive, pulmonary disorder presenting with poorly reversible airflow limitation as a result of chronic bronchitis and emphysema. The prevalence, disease burden for the individual, and mortality of COPD continues to increase, whereas no effective treatment strategies are available. For many years now, a combination of bronchodilators and anti-inflammatory corticosteroids has been most widely used for therapeutic management of patients with persistent COPD. However, this approach has had disappointing results as a large number of COPD patients are corticosteroid resistant. In patients with COPD, there is emerging evidence showing aberrant expression of epigenetic marks such as DNA methylation, histone modifications and microRNAs in blood, sputum and lung tissue. Therefore, novel therapeutic approaches may exist using epigenetic therapy. This review aims to describe and summarize current knowledge of aberrant expression of epigenetic marks in COPD. In addition, tools available for restoration of epigenetic marks are described, as well as delivery mechanisms of epigenetic editors to cells. Targeting epigenetic marks might be a very promising tool for treatment and lung regeneration in COPD in the future.
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Affiliation(s)
- Dan-Dan Wu
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands; University of Groningen, University Medical Center Groningen, GRIAC Research Institute, Groningen, The Netherlands; Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong, P.R. China
| | - Juan Song
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands; University of Groningen, University Medical Center Groningen, GRIAC Research Institute, Groningen, The Netherlands; Tianjin Medical University, School of Basic Medical Sciences, Department of Biochemistry and Molecular Biology, Department of Immunology, Tianjin, China
| | - Sabine Bartel
- Early Life Origins of Chronic Lung Disease, Priority Area Asthma & Allergy, Leibnitz Center for Medicine and Biosciences, Research Center Borstel and Christian Albrechts University Kiel; Airway Research Center North, member of the German Center for Lung Research (DZL), Germany
| | - Susanne Krauss-Etschmann
- Early Life Origins of Chronic Lung Disease, Priority Area Asthma & Allergy, Leibnitz Center for Medicine and Biosciences, Research Center Borstel and Christian Albrechts University Kiel; Airway Research Center North, member of the German Center for Lung Research (DZL), Germany
| | - Marianne G Rots
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands
| | - Machteld N Hylkema
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands; University of Groningen, University Medical Center Groningen, GRIAC Research Institute, Groningen, The Netherlands.
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Pereira KMA, Costa SFDS, Pereira NB, Diniz MG, Castro WH, Gomes CC, Gomez RS. DNA methylation profiles of 22 apoptosis-related genes in odontogenic keratocysts before and after marsupialization. Oral Surg Oral Med Oral Pathol Oral Radiol 2017; 124:483-489. [DOI: 10.1016/j.oooo.2017.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 07/13/2017] [Accepted: 07/26/2017] [Indexed: 01/30/2023]
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Li J, Li WX, Bai C, Song Y. Particulate matter-induced epigenetic changes and lung cancer. THE CLINICAL RESPIRATORY JOURNAL 2017; 11:539-546. [PMID: 26403658 PMCID: PMC7310573 DOI: 10.1111/crj.12389] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 07/28/2015] [Accepted: 09/24/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND AIMS Lung cancer is the leading cause of cancer death worldwide. Cigarette smoking is the well-known risk factor for lung cancer. Epidemiological studies suggest that air pollution, especially particulate matter (PM) exposure, is associated with increased lung cancer risk and mortality independent of cigarette smoking. METHODS English-language publications focusing on PM, epigenetic changes, and lung cancer were reviewed. The epigenome serves as an interface between the environment and the genome. PM is one of the environmental factors that can cause epigenetic changes. The epigenome serves as an interface between the environment and the genome. Some of the epigenetic changes lead to increased disease susceptibility and progression. In cardiovascular disease and asthma, the association between PM exposure and the disease specific epigenetic changes has been identified. In lung cancer, the epigenetic changes in DNA methylation, histone modification and microRNA expression are commonly found, but the specific link between PM exposure and lung cancer remains incompletely understood. RESULTS The results of epidemiological studies indicate the important effects of PM exposure on lung cancer. PM2.5 is consistently associated with the increased lung cancer risk and mortality. Based on the epidemiological associations between PM exposure and lung cancer, PM-induced epigenetic changes may play important roles in the pathogenesis of lung cancer. CONCLUSION In this review, we focus on the current knowledge of epigenetic changes associated with PM exposure and lung cancer. Better understanding of the link between PM exposure and lung cancer at the epigenomic level by comprehensive comparison approach may identify lung cancer early detection biomarkers and novel therapeutic targets.
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Affiliation(s)
- Jinghong Li
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Willis X Li
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Chunxue Bai
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yuanlin Song
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
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Asa'ad F, Bollati V, Pagni G, Castilho RM, Rossi E, Pomingi F, Tarantini L, Consonni D, Giannobile WV, Rasperini G. Evaluation of DNA methylation of inflammatory genes following treatment of chronic periodontitis: A pilot case-control study. J Clin Periodontol 2017; 44:905-914. [DOI: 10.1111/jcpe.12783] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/19/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Farah Asa'ad
- Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
| | - Valentina Bollati
- EPIGET-Epidemiology, Epigenetics and Toxicology Lab; Department of Clinical Sciences and Community Health; University of Milan; Milan Italy
- Epidemiology Unit; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; Milan Italy
| | - Giorgio Pagni
- Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
| | - Rogerio M. Castilho
- Laboratory of Epithelial Biology; University of Michigan School of Dentistry; Ann Arbor MI USA
- Department of Periodontics and Oral Medicine; School of Dentistry; University of Michigan; Ann Arbor MI USA
| | - Eleonora Rossi
- Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
| | | | - Letizia Tarantini
- EPIGET-Epidemiology, Epigenetics and Toxicology Lab; Department of Clinical Sciences and Community Health; University of Milan; Milan Italy
| | - Dario Consonni
- Epidemiology Unit; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; Milan Italy
| | - William V. Giannobile
- Department of Periodontics and Oral Medicine; School of Dentistry; University of Michigan; Ann Arbor MI USA
| | - Giulio Rasperini
- Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
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Maternal asthma severity and control during pregnancy and risk of offspring asthma. J Allergy Clin Immunol 2017; 141:886-892.e3. [PMID: 28712803 DOI: 10.1016/j.jaci.2017.05.016] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 05/01/2017] [Accepted: 05/08/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND Severe and uncontrolled asthma during pregnancy has been linked to several unfavorable perinatal outcomes. However, current knowledge on the association between the severity and control of maternal asthma and offspring asthma is sparse. OBJECTIVE We sought to investigate the extent to which offspring asthma is influenced by maternal asthma severity and control during pregnancy. METHODS We performed a prospective population-based cohort study. Using linkage of Danish national registers, we constructed a cohort of 675,379 singletons, of which 15,014 children were born to asthmatic mothers. Among them, 7,188 children were born to mothers with active asthma during pregnancy. We categorized mothers with active asthma into 4 groups based on dispensed antiasthma prescriptions and on use of medical services: mild controlled, mild uncontrolled, moderate-to-severe controlled, and moderate-to-severe uncontrolled asthma. The outcomes were offspring early-onset transient, early-onset persistent, and late-onset asthma. We estimated prevalence ratios (PRs) of each phenotype of asthma using a log-binomial model with 95% CIs. RESULTS Higher prevalence of early-onset persistent asthma was observed among children of asthmatic mothers with mild uncontrolled (PR, 1.19; 95% CI, 1.05-1.35), moderate-to-severe controlled (PR, 1.33; 95% CI, 1.09-1.63), and moderate-to-severe uncontrolled asthma (PR, 1.37; 95% CI, 1.17-1.61) compared with those of mothers with mild controlled asthma. A borderline increased prevalence of early-onset transient asthma was observed among children of mothers with uncontrolled asthma. CONCLUSION Maternal uncontrolled asthma increases the risk of early-onset persistent and transient asthma. If replicated, this could suggest that maintaining asthma control in pregnancy is an area for possible prevention of specific phenotypes of offspring asthma.
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Bertelsen RJ, Rava M, Carsin AE, Accordini S, Benediktsdóttir B, Dratva J, Franklin KA, Heinrich J, Holm M, Janson C, Johannessen A, Jarvis DL, Jogi R, Leynaert B, Norback D, Omenaas ER, Raherison C, Sánchez‐Ramos JL, Schlünssen V, Sigsgaard T, Dharmage SC, Svanes C. Clinical markers of asthma and IgE assessed in parents before conception predict asthma and hayfever in the offspring. Clin Exp Allergy 2017; 47:627-638. [PMID: 28199764 PMCID: PMC5447870 DOI: 10.1111/cea.12906] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 01/23/2017] [Accepted: 02/01/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND Mice models suggest epigenetic inheritance induced by parental allergic disease activity. However, we know little of how parental disease activity before conception influences offspring's asthma and allergy in humans. OBJECTIVE We aimed to assess the associations of parental asthma severity, bronchial hyperresponsiveness (BHR), and total and specific IgEs, measured before conception vs. after birth, with offspring asthma and hayfever. METHODS The study included 4293 participants (mean age 34, 47% men) from the European Community Respiratory Health Survey (ECRHS) with information on asthma symptom severity, BHR, total and specific IgEs from 1991 to 1993, and data on 9100 offspring born 1972-2012. Adjusted relative risk ratios (aRRR) for associations of parental clinical outcome with offspring allergic disease were estimated with multinomial logistic regressions. RESULTS Offspring asthma with hayfever was more strongly associated with parental BHR and specific IgE measured before conception than after birth [BHR: aRRR = 2.96 (95% CI: 1.92, 4.57) and 1.40 (1.03, 1.91), respectively; specific IgEs: 3.08 (2.13, 4.45) and 1.83 (1.45, 2.31), respectively]. This was confirmed in a sensitivity analysis of a subgroup of offspring aged 11-22 years with information on parental disease activity both before and after birth. CONCLUSION & CLINICAL RELEVANCE Parental BHR and specific IgE were associated with offspring asthma and hayfever, with the strongest associations observed with clinical assessment before conception as compared to after birth of the child. If the hypothesis is confirmed in other studies, parental disease activity assessed before conception may prove useful for identifying children at risk for developing asthma with hayfever.
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Affiliation(s)
- R. J. Bertelsen
- Department of Clinical ScienceUniversity of BergenBergenNorway
- Department of Occupational MedicineHaukeland University HospitalBergenNorway
| | - M. Rava
- INSERM U1168, VIMA: Aging and Chronic DiseasesEpidemiological and Public Health ApproachesVillejuifFrance
- UMR‐S 1168Univ Versailles St‐Quentin‐en‐YvelinesMontigny le BretonneuxFrance
- Genetic and Molecular Epidemiology GroupSpanish National Cancer Research Center (CNIO)MadridSpain
| | - A. E. Carsin
- ISGlobalCentre for Research in Environmental Epidemiology (CREAL)BarcelonaSpain
- Universitat Pompeu FabraBarcelonaSpain
- CIBER de Epidemiología y Salud Pública (CIBERESP)BarcelonaSpain
| | - S. Accordini
- Unit of Epidemiology and Medical StatisticsDepartment of Diagnostics and Public HealthUniversity of VeronaVeronaItaly
| | | | - J. Dratva
- Department of Epidemiology and Public HealthSwiss Tropical and Public Health InstituteBaselSwitzerland
| | - K. A. Franklin
- Department of Surgical and Perioperative SciencesUmeå UniversityUmeåSweden
| | - J. Heinrich
- Helmholtz Zentrum MünchenGerman Research Center for Environmental HealthInstitute of Epidemiology INeuherbergGermany
- Institute and Outpatient Clinic for Occupational, Social, and Environmental MedicineLudwig Maximilians University MunichMunchenGermany
| | - M. Holm
- Department of Occupational and Environmental MedicineSahlgrenska University HospitalGothenburgSweden
| | - C. Janson
- Department of Medical SciencesUppsala UniversityUppsalaSweden
| | - A. Johannessen
- Centre for International HealthDepartment of Global Public Health and Primary CareUniversity of BergenBergenNorway
- Centre for Clinical ResearchHaukeland University HospitalBergenNorway
| | - D. L. Jarvis
- Respiratory Epidemiology, Occupational Medicine and Public HealthNational Heart and Lung InstituteImperial CollegeLondonUK
| | - R. Jogi
- Tartu University HospitalLung ClinicTartuEstonia
| | - B. Leynaert
- Inserm, UMR 1152Pathophysiology and Epidemiology of Respiratory Diseases, Epidemiology TeamParisFrance
- UMR 1152University Paris Diderot Paris 7ParisFrance
| | - D. Norback
- Department of Medical SciencesUppsala UniversityUppsalaSweden
| | - E. R. Omenaas
- Department of Clinical ScienceUniversity of BergenBergenNorway
- Centre for Clinical ResearchHaukeland University HospitalBergenNorway
| | - C. Raherison
- INSERM U897 Bordeaux UniversityBordeaux CedexFrance
| | | | - V. Schlünssen
- Department of Public HealthAarhus UniversityAarhusDenmark
- National Research Centre for the Working EnvironmentCopenhagenDenmark
| | - T. Sigsgaard
- Department of Public HealthAarhus UniversityAarhusDenmark
| | - S. C. Dharmage
- Allergy and Lung Health Unit, Melbourne School of Population HealthThe University of MelbourneMelbourneVic.Australia
| | - C. Svanes
- Department of Occupational MedicineHaukeland University HospitalBergenNorway
- Centre for International HealthDepartment of Global Public Health and Primary CareUniversity of BergenBergenNorway
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Chatterton Z, Hartley BJ, Seok MH, Mendelev N, Chen S, Milekic M, Rosoklija G, Stankov A, Trencevsja-Ivanovska I, Brennand K, Ge Y, Dwork AJ, Haghighi F. In utero exposure to maternal smoking is associated with DNA methylation alterations and reduced neuronal content in the developing fetal brain. Epigenetics Chromatin 2017; 10:4. [PMID: 28149327 PMCID: PMC5270321 DOI: 10.1186/s13072-017-0111-y] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 01/09/2017] [Indexed: 12/31/2022] Open
Abstract
Background Intrauterine exposure to maternal smoking is linked to impaired executive function and behavioral problems in the offspring. Maternal smoking is associated with reduced fetal brain growth and smaller volume of cortical gray matter in childhood, indicating that prenatal exposure to tobacco may impact cortical development and manifest as behavioral problems. Cellular development is mediated by changes in epigenetic modifications such as DNA methylation, which can be affected by exposure to tobacco. Results In this study, we sought to ascertain how maternal smoking during pregnancy affects global DNA methylation profiles of the developing dorsolateral prefrontal cortex (DLPFC) during the second trimester of gestation. When DLPFC methylation profiles (assayed via Illumina, HM450) of smoking-exposed and unexposed fetuses were compared, no differentially methylated regions (DMRs) passed the false discovery correction (FDR ≤ 0.05). However, the most significant DMRs were hypomethylated CpG Islands within the promoter regions of GNA15 and SDHAP3 of smoking-exposed fetuses. Interestingly, the developmental up-regulation of SDHAP3 mRNA was delayed in smoking-exposed fetuses. Interaction analysis between gestational age and smoking exposure identified significant DMRs annotated to SYCE3, C21orf56/LSS, SPAG1 and RNU12/POLDIP3 that passed FDR. Furthermore, utilizing established methods to estimate cell proportions by DNA methylation, we found that exposed DLPFC samples contained a lower proportion of neurons in samples from fetuses exposed to maternal smoking. We also show through in vitro experiments that nicotine impedes the differentiation of neurons independent of cell death. Conclusions We found evidence that intrauterine smoking exposure alters the developmental patterning of DNA methylation and gene expression and is associated with reduced mature neuronal content, effects that are likely driven by nicotine. Electronic supplementary material The online version of this article (doi:10.1186/s13072-017-0111-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Zac Chatterton
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029 USA.,Department of Neuroscience, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Floor 10, Room 10-70D, New York, NY 10029 USA.,Medical Epigenetics, James J. Peters VA Medical Center, Bronx, NY 10468 USA
| | - Brigham J Hartley
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029 USA.,Department of Neuroscience, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Floor 10, Room 10-70D, New York, NY 10029 USA.,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029 USA
| | - Man-Ho Seok
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029 USA.,Department of Neuroscience, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Floor 10, Room 10-70D, New York, NY 10029 USA.,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029 USA
| | - Natalia Mendelev
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029 USA.,Department of Neuroscience, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Floor 10, Room 10-70D, New York, NY 10029 USA.,Medical Epigenetics, James J. Peters VA Medical Center, Bronx, NY 10468 USA
| | - Sean Chen
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029 USA.,Department of Neuroscience, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Floor 10, Room 10-70D, New York, NY 10029 USA.,Medical Epigenetics, James J. Peters VA Medical Center, Bronx, NY 10468 USA
| | - Maria Milekic
- Department of Psychiatry, Columbia University, New York, NY 10032 USA
| | - Gorazd Rosoklija
- Department of Psychiatry, Columbia University, New York, NY 10032 USA.,Macedonian Academy of Sciences and Arts, Skopje, Macedonia.,School of Medicine, Skopje, Macedonia
| | | | | | - Kristen Brennand
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029 USA.,Department of Neuroscience, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Floor 10, Room 10-70D, New York, NY 10029 USA.,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029 USA
| | - Yongchao Ge
- Department of Neurology, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029 USA
| | - Andrew J Dwork
- Department of Psychiatry, Columbia University, New York, NY 10032 USA.,Department of Pathology and Cell Biology, Columbia University, New York, NY 10032 USA.,Macedonian Academy of Sciences and Arts, Skopje, Macedonia
| | - Fatemeh Haghighi
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029 USA.,Department of Neuroscience, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Floor 10, Room 10-70D, New York, NY 10029 USA.,Medical Epigenetics, James J. Peters VA Medical Center, Bronx, NY 10468 USA
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Sunil VR, Vayas KN, Fang M, Zarbl H, Massa C, Gow AJ, Cervelli JA, Kipen H, Laumbach RJ, Lioy PJ, Laskin JD, Laskin DL. World Trade Center (WTC) dust exposure in mice is associated with inflammation, oxidative stress and epigenetic changes in the lung. Exp Mol Pathol 2016; 102:50-58. [PMID: 27986442 DOI: 10.1016/j.yexmp.2016.12.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 12/08/2016] [Accepted: 12/09/2016] [Indexed: 12/20/2022]
Abstract
Exposure to World Trade Center (WTC) dust has been linked to respiratory disease in humans. In the present studies we developed a rodent model of WTC dust exposure to analyze lung oxidative stress and inflammation, with the goal of elucidating potential epigenetic mechanisms underlying these responses. Exposure of mice to WTC dust (20μg, i.t.) was associated with upregulation of heme oxygenase-1 and cyclooxygenase-2 within 3days, a response which persisted for at least 21days. Whereas matrix metalloproteinase was upregulated 7days post-WTC dust exposure, IL-6RA1 was increased at 21days; conversely, expression of mannose receptor, a scavenger receptor important in particle clearance, decreased. After WTC dust exposure, increases in methylation of histone H3 lysine K4 at 3days, lysine K27 at 7days and lysine K36, were observed in the lung, along with hypermethylation of Line-1 element at 21days. Alterations in pulmonary mechanics were also observed following WTC dust exposure. Thus, 3days post-exposure, lung resistance and tissue damping were decreased. In contrast at 21days, lung resistance, central airway resistance, tissue damping and tissue elastance were increased. These data demonstrate that WTC dust-induced inflammation and oxidative stress are associated with epigenetic modifications in the lung and altered pulmonary mechanics. These changes may contribute to the development of WTC dust pathologies.
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Affiliation(s)
- Vasanthi R Sunil
- Department of Pharmacology and Toxicology, Rutgers University, Ernest Mario School of Pharmacy, Piscataway, NJ, United States.
| | - Kinal N Vayas
- Department of Pharmacology and Toxicology, Rutgers University, Ernest Mario School of Pharmacy, Piscataway, NJ, United States
| | - Mingzhu Fang
- Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Helmut Zarbl
- Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Christopher Massa
- Department of Pharmacology and Toxicology, Rutgers University, Ernest Mario School of Pharmacy, Piscataway, NJ, United States
| | - Andrew J Gow
- Department of Pharmacology and Toxicology, Rutgers University, Ernest Mario School of Pharmacy, Piscataway, NJ, United States
| | - Jessica A Cervelli
- Department of Pharmacology and Toxicology, Rutgers University, Ernest Mario School of Pharmacy, Piscataway, NJ, United States
| | - Howard Kipen
- Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Robert J Laumbach
- Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Paul J Lioy
- Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Jeffrey D Laskin
- Department of Environmental and Occupational Health, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Debra L Laskin
- Department of Pharmacology and Toxicology, Rutgers University, Ernest Mario School of Pharmacy, Piscataway, NJ, United States
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Gan L, Li C, Wang J, Guo X. Curcumin modulates the effect of histone modification on the expression of chemokines by type II alveolar epithelial cells in a rat COPD model. Int J Chron Obstruct Pulmon Dis 2016; 11:2765-2773. [PMID: 27853364 PMCID: PMC5106221 DOI: 10.2147/copd.s113978] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background Studies have suggested that histone modification has a positive impact on various aspects associated with the progression of COPD. Histone deacetylase 2 (HDAC2) suppresses proinflammatory gene expression through deacetylation of core histones. Objective To investigate the effect of histone modification on the expression of chemokines in type II alveolar epithelial cells (AEC II) in a rat COPD model and regulation of HDAC2 expression by curcumin in comparison with corticosteroid. Materials and methods The rat COPD model was established by cigarette smoke exposure and confirmed by histology and pathophysioloy. AEC II were isolated and cultured in vitro from the COPD models and control animals. The cells were treated with curcumin, corticosteroid, or trichostatin A, and messenger RNA (mRNA) expression of interleukin-8 (IL-8), monocyte chemoattractant protein-1 (MCP-1), and macrophage inflammatory protein-2α (MIP-2α) was assessed by quantitative real-time polymerase chain reaction (RT-PCR). The expression of HDAC2 was measured by Western blot. Chromatin immunoprecipitation was used to detect H3/H4 acetylation and H3K9 methylation in the promoter region of three kinds of chemokine genes (IL-8, MCP-1, and MIP-2α). Results Compared to the control group, the mRNAs of MCP-1, IL-8, and MIP-2α were upregulated 4.48-fold, 3.14-fold, and 2.83-fold, respectively, in the AEC II from COPD model. The protein expression of HDAC2 in the AEC II from COPD model was significantly lower than from the control group (P<0.05). The decreased expression of HDAC2 was negatively correlated with the increased expression of IL-8, MCP-1, and MIP-2α mRNAs (all P<0.05). The level of H3/H4 acetylation was higher but H3K9 methylation in the promoter region of chemokine genes was lower in the cells from COPD model than from the control group (all P<0.05). Curcumin downregulated the expression of MCP-1, IL-8, and MIP-2α, and the expression was further enhanced in the presence of corticosteroid. Moreover, curcumin restored HDAC2 expression, decreased the levels of H3/H4 acetylation, and increased H3K9 methylation in the promoter region of chemokine in the presence or absence of dexamethasone (all P<0.05). Conclusion Curcumin may suppress chemokines and restore corticosteroid resistance in COPD through modulating HDAC2 expression and its effect on histone modification.
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Affiliation(s)
- Lixing Gan
- Department of Respiratory Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - Chengye Li
- Department of Respiratory Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou
| | - Jian Wang
- Department of Respiratory Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - Xuejun Guo
- Department of Respiratory Medicine, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
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36
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Estrogen and promoter methylation in the regulation of PLA2G7 transcription. Gene 2016; 591:262-267. [PMID: 27450918 DOI: 10.1016/j.gene.2016.07.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 06/30/2016] [Accepted: 07/20/2016] [Indexed: 12/11/2022]
Abstract
In the current study, cell lines including HEK293, SW480, HPASMC, HPCASMC and HAEC were cultured with 5-aza-2-deoxycytidine (DAC) and 17-β-estradiol to investigate whether PLA2G7 transcription was under the control of promoter methylation and 17-β-estradiol. Luciferase reporter gene assays were used to evaluate whether reporter gene activity was enhanced by PLA2G7 promoter fragment. Gene expression and methylation were detected using RT-PCR and pyrosequencing methods, respectively. Endogenous PLA2G7 transcription levels were found to be significantly lower in vascular related cell lines than in the other cell lines. Luciferase reporter gene assays indicated that gene activity was significantly enhanced by PLA2G7 promoter fragment. PLA2G7 transcription was found to be up-regulated with the treatment of DAC. The 17-β-estradiol was found to down-regulate PLA2G7 transcription in all the cell lines. However, 17-β-estradiol did not have significant effect on PLA2G7 methylation. Further chromatin immunoprecipitation assay showed that 17-β-estradiol might regulate gene transcription by affecting the acetylated histone H3 and H4 marks on PLA2G7 promoter. Our results showed that PLA2G7 gene expression was co-regulated by 17-β-estradiol and promoter methylation. Our findings might provide molecular clues for gender disparity in the contribution of PLA2G7 to vascular related diseases such as coronary heart disease.
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Toki S, Goleniewska K, Reiss S, Zhou W, Newcomb DC, Bloodworth MH, Stier MT, Boyd KL, Polosukhin VV, Subramaniam S, Peebles RS. The histone deacetylase inhibitor trichostatin A suppresses murine innate allergic inflammation by blocking group 2 innate lymphoid cell (ILC2) activation. Thorax 2016; 71:633-45. [PMID: 27071418 PMCID: PMC4941189 DOI: 10.1136/thoraxjnl-2015-207728] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 02/25/2016] [Accepted: 03/01/2016] [Indexed: 01/08/2023]
Abstract
BACKGROUND Group 2 innate lymphoid cells (ILC2) are an important source of the type 2 cytokines interleukin (IL)-5 and IL-13 that are critical to the allergic airway phenotype. Previous studies reported that histone deacetylase (HDAC) inhibition by trichostatin A (TSA) downregulated adaptive allergic immune responses; however, the effect of HDAC inhibition on the early innate allergic immune response is unknown. Therefore, we investigated the effect of TSA on innate airway inflammation mediated by ILC2 activation. METHODS BALB/c mice were challenged intranasally with Alternaria extract, exogenous recombinant mouse IL-33 (rmIL-33) or the respective vehicles for four consecutive days following TSA or vehicle treatment. Bronchoalveolar lavage (BAL) fluids and lungs were harvested 24 h after the last challenge. RESULTS We found that TSA treatment significantly decreased the number of ILC2 expressing IL-5 and IL-13 in the lungs challenged with Alternaria extract or rmIL-33 compared with vehicle treatment (p<0.05). TSA treatment significantly decreased protein expression of IL-5, IL-13, CCL11 and CCL24 in the lung homogenates from Alternaria extract-challenged mice or rmIL-33-challenged mice compared with vehicle treatment (p<0.05). Further, TSA treatment significantly decreased the number of perivascular eosinophils and mucus production in the large airways that are critical components of the asthma phenotype (p<0.05). TSA did not change early IL-33 release in the BAL fluids; however, TSA decreased lung IL-33 expression from epithelial cells 24 h after last Alternaria extract challenge compared with vehicle treatment (p<0.05). CONCLUSIONS These results reveal that TSA reduces allergen-induced ILC2 activation and the early innate immune responses to an inhaled protease-containing aeroallergen.
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Affiliation(s)
- Shinji Toki
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Kasia Goleniewska
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Sara Reiss
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Weisong Zhou
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Dawn C Newcomb
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Melissa H Bloodworth
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Matthew T Stier
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Kelli L Boyd
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Vasiliy V Polosukhin
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Sriram Subramaniam
- Department of Neurology, Vanderbilt University, Nashville, Tennessee, USA
| | - R Stokes Peebles
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
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Plaza-Serón MDC, Blanca-López N, Pérez-Sánchez N, Doña I, Acosta-Herrera M, Pino-Yanes M, Flores C, Cornejo-García JA, Perkins JR, Molina A, Torres MJ, Blanca M, Canto MG, Ayuso P. Genetic Variants of Thymic Stromal Lymphopoietin in Nonsteroidal Anti-Inflammatory Drug-Induced Urticaria/Angioedema. Int Arch Allergy Immunol 2016; 169:249-55. [DOI: 10.1159/000444797] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 02/15/2016] [Indexed: 11/19/2022] Open
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Chogtu B, Bhattacharjee D, Magazine R. Epigenetics: The New Frontier in the Landscape of Asthma. SCIENTIFICA 2016; 2016:4638949. [PMID: 27293973 PMCID: PMC4879257 DOI: 10.1155/2016/4638949] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 04/19/2016] [Indexed: 06/06/2023]
Abstract
Over the years, on a global scale, asthma has continued to remain one of the leading causes of morbidity, irrespective of age, sex, or social bearings. This is despite the prevalence of varied therapeutic options to counter the pathogenesis of asthma. Asthma, as a disease per se, is a very complex one. Scientists all over the world have been trying to obtain a lucid understanding of the machinations behind asthma. This has led to many theories and conjectures. However, none of the scientific disciplines have been able to provide the missing links in the chain of asthma pathogenesis. This was until epigenetics stepped into the picture. Though epigenetic research in asthma is in its nascent stages, it has led to very exciting results, especially with regard to explaining the massive influence of environment on development of asthma and its varied phenotypes. However, there remains a lot of work to be done, especially with regard to understanding how the interactions between immune system, epigenome, and environment lead to asthma. But introduction of epigenetics has infused a fresh lease of life in research into asthma and the mood among the scientific community is that of cautious optimism.
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Affiliation(s)
- Bharti Chogtu
- Department of Pharmacology, Kasturba Medical College, Manipal University, Karnataka 576104, India
| | - Dipanjan Bhattacharjee
- Department of Pharmacology, Kasturba Medical College, Manipal University, Karnataka 576104, India
| | - Rahul Magazine
- Department of Pulmonary Medicine, Kasturba Medical College, Manipal University, Karnataka 576104, India
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Erdoğan Ö, Xie L, Wang L, Wu B, Kong Q, Wan Y, Chen X. Proteomic dissection of LPS-inducible, PHF8-dependent secretome reveals novel roles of PHF8 in TLR4-induced acute inflammation and T cell proliferation. Sci Rep 2016; 6:24833. [PMID: 27112199 PMCID: PMC4845005 DOI: 10.1038/srep24833] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 04/01/2016] [Indexed: 11/09/2022] Open
Abstract
Endotoxin (LPS)-induced changes in histone lysine methylation contribute to the gene-specific transcription for control of inflammation. Still unidentified are the chromatin regulators that drive the transition from a transcriptional-repressive to a transcriptional-active chromatin state of pro-inflammatory genes. Here, using combined approaches to analyze LPS-induced changes in both gene-specific transcription and protein secretion to the extracellular compartment, we characterize novel functions of the lysine demethylase PHF8 as a pro-inflammatory, gene-specific chromatin regulator. First, in the LPS-induced, acute-inflamed macrophages, PHF8 knockdown led to both a reduction of pro-inflammatory factors and an increase in a transcriptional-repressive code (H3K9me2) written by the methyltransferase G9a. Through unbiased quantitative secretome screening we discovered that LPS induces the secretion of a cluster of PHF8-dependent, 'tolerizable' proteins that are related to diverse extracellular pathways/processes including those for the activation of adaptive immunity. Specifically, we determined that PHF8 promotes T-cell activation and proliferation, thus providing the first link between the epigenetic regulation of inflammation and adaptive immunity. Further, we found that, in the acute-inflamed macrophages, the acute-active PHF8 opposes the H3K9me1/2-writing activity of G9a to activate specific protein secretions that are suppressed by G9a in the endotoxin-tolerant cells, revealing the inflammatory-phenotypic chromatin drivers that regulate the gene-specific chromatin plasticity.
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Affiliation(s)
- Özgün Erdoğan
- Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, US
| | - Ling Xie
- Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, US
| | - Li Wang
- Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, US
- Department of Chemistry, Fudan University, Shanghai, China
| | - Bing Wu
- Departement of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, US
| | - Qing Kong
- Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, US
| | - Yisong Wan
- Departement of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, US
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599, US
| | - Xian Chen
- Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, US
- Department of Chemistry, Fudan University, Shanghai, China
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599, US
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Castro-Rodríguez JA, Krause BJ, Uauy R, Casanello P. [Epigenetics in allergic diseases and asthma]. ACTA ACUST UNITED AC 2016; 87:88-95. [PMID: 27055949 DOI: 10.1016/j.rchipe.2016.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 02/21/2016] [Accepted: 02/25/2016] [Indexed: 12/26/2022]
Abstract
Allergic diseases and asthma are the result of complex interactions between genetic predisposition and environmental factors. Asthma is one of the most prevalent chronic disease among children. In this article we review some environmental factors like: allergen exposition, tobacco, bacteria, microbial components, diet, obesity and stress, which influences during intrauterine and infancy life in the epigenetic regulation of asthma and allergic diseases. The review has been done in three models: in-vitro, animal and human.
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Affiliation(s)
- José A Castro-Rodríguez
- División de Pediatría, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Laboratorio de Programación y Epigenética Perinatal, Centro de Investigaciones Médicas, Santiago, Chile.
| | - Bernardo J Krause
- Laboratorio de Programación y Epigenética Perinatal, Centro de Investigaciones Médicas, Santiago, Chile; División de Obstetricia y Ginecología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ricardo Uauy
- División de Pediatría, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Laboratorio de Programación y Epigenética Perinatal, Centro de Investigaciones Médicas, Santiago, Chile
| | - Paola Casanello
- División de Pediatría, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Laboratorio de Programación y Epigenética Perinatal, Centro de Investigaciones Médicas, Santiago, Chile; División de Obstetricia y Ginecología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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Histone Deacetylase Inhibition and IκB Kinase/Nuclear Factor-κB Blockade Ameliorate Microvascular Proinflammatory Responses Associated With Hemorrhagic Shock/Resuscitation in Mice*. Crit Care Med 2015. [DOI: 10.1097/ccm.0000000000001203] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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43
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Costantini TW, Coimbra R, Lopez NE, Lee JG, Potenza B, Smith A, Baird A, Eliceiri BP. Monitoring Neutrophil-Expressed Cell Surface Esophageal Cancer Related Gene-4 after Severe Burn Injury. Surg Infect (Larchmt) 2015; 16:669-74. [PMID: 26460850 DOI: 10.1089/sur.2014.209] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND We identified recently esophageal cancer related gene-4 (ECRG4) as a candidate cytokine that is expressed on the surface of quiescent polymorphonuclear leukocytes (PMNs) and shed in response to ex vivo treatment with lipopolysaccharide. To investigate the potential biologic relevance of changes in cell surface ECRG4 in human samples, we performed a pilot study to examine a population of burn patients in whom blood could be analyzed prospectively. We hypothesized that cutaneous burn injury would alter cell surface expression of ECRG4 on PMNs. METHODS Patients admitted with more than 20% total burn surface area (TBSA) (n = 10) had blood collected at the time of admission and weekly thereafter. For comparison, blood was obtained from a control group of healthy human volunteers (n = 4). We used flow cytometry to measure changes in ECRG4(+) PMNs from patients during recovery from injury. Esophageal cancer related gene-4 expression at each time point was compared with the patient's clinical status based on a Multiple Organ Dysfunction (MOD) score. RESULTS Esophageal cancer related gene-4 was detected on the PMN surface of cells collected from healthy volunteers, however, within 48 h of admission after burn injury (n = 10 patients), the number of PMNs with cell surface ECRG4 was decreased. Esophageal cancer related gene-4 expression in PMNs was re-established over the course of patient recovery, unless complications occurred. In this case, the decrease in cell surface ECRG4(+) PMNs preceded the clinical diagnosis of infectious complications and was reflected by increased organ injury scores. CONCLUSION From a small sample set, we were able to determine that PMN cell surface ECRG4 expression was decreased after burn injury and returned to baseline during recovery from injury. Although larger studies are needed to define the role of ECRG4 in human PMNs further, this report is the first assessment of cell surface ECRG4 protein in a patient population to support analogous findings in animal studies.
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Affiliation(s)
- Todd W Costantini
- Division of Trauma, Surgical Critical Care, and Burn, Department of Surgery, University of California San Diego Health Sciences , San Diego, California
| | - Raul Coimbra
- Division of Trauma, Surgical Critical Care, and Burn, Department of Surgery, University of California San Diego Health Sciences , San Diego, California
| | - Nicole E Lopez
- Division of Trauma, Surgical Critical Care, and Burn, Department of Surgery, University of California San Diego Health Sciences , San Diego, California
| | - Jeanne G Lee
- Division of Trauma, Surgical Critical Care, and Burn, Department of Surgery, University of California San Diego Health Sciences , San Diego, California
| | - Bruce Potenza
- Division of Trauma, Surgical Critical Care, and Burn, Department of Surgery, University of California San Diego Health Sciences , San Diego, California
| | - Alan Smith
- Division of Trauma, Surgical Critical Care, and Burn, Department of Surgery, University of California San Diego Health Sciences , San Diego, California
| | - Andrew Baird
- Division of Trauma, Surgical Critical Care, and Burn, Department of Surgery, University of California San Diego Health Sciences , San Diego, California
| | - Brian P Eliceiri
- Division of Trauma, Surgical Critical Care, and Burn, Department of Surgery, University of California San Diego Health Sciences , San Diego, California
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Damiani E, Puebla-Osorio N, Gorbea E, Ullrich SE. Platelet-Activating Factor Induces Epigenetic Modifications in Human Mast Cells. J Invest Dermatol 2015; 135:3034-3040. [PMID: 26316070 PMCID: PMC4648694 DOI: 10.1038/jid.2015.336] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 07/27/2015] [Accepted: 08/11/2015] [Indexed: 12/29/2022]
Abstract
Ultraviolet (UV) radiation-induced systemic immune suppression is a major risk factor for skin cancer induction. The migration of dermal mast cells from the skin to the draining lymph nodes plays a prominent role in activating systemic immune suppression. UV-induced keratinocyte-derived platelet-activating factor (PAF) activates mast cell migration, in part by up regulating the expression of CXCR4 on the surface of mast cells. Others have indicated that epigenetic mechanisms regulate CXCR4 expression, so we asked whether PAF activates epigenetic mechanisms in mast cells. Human mast cells were treated with PAF and the effect on DNA methylation and/or acetylation was measured. PAF suppressed the expression of DNA methyltransferase (DNMT) 1 and 3b. On the other hand, PAF increased p300 histone acetyltransferase expression, and the acetylation of histone H3, which coincided with a decreased expression of the histone deacetylase HDAC2. Chromatin immunoprecipitation assays indicated that PAF-treatment activated the acetylation of the CXCR4 promoter. Finally, inhibiting histone acetylation blocked p300 up-regulation and suppressed PAF-induced surface expression of CXCR4. Our findings suggest a novel molecular mechanism for PAF, activation of epigenetic modifications. We suggest that PAF may serve as an endogenous molecular mediator that links the environment (UV radiation) with the epigenome.
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Affiliation(s)
- Elisabetta Damiani
- Dipartimento di Scienze delle Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona, Italy.,Department of Immunology and The Center for Cancer Immunology Research, The University of Texas, MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Nahum Puebla-Osorio
- Department of Immunology and The Center for Cancer Immunology Research, The University of Texas, MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Enrique Gorbea
- Department of Immunology and The Center for Cancer Immunology Research, The University of Texas, MD Anderson Cancer Center, Houston, Texas, 77030, USA
| | - Stephen E Ullrich
- Department of Immunology and The Center for Cancer Immunology Research, The University of Texas, MD Anderson Cancer Center, Houston, Texas, 77030, USA.,The Graduate School for Biomedical Sciences, Houston, Texas, 77030, USA
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Stefanowicz D, Lee JY, Lee K, Shaheen F, Koo HK, Booth S, Knight DA, Hackett TL. Elevated H3K18 acetylation in airway epithelial cells of asthmatic subjects. Respir Res 2015; 16:95. [PMID: 26243279 PMCID: PMC4531814 DOI: 10.1186/s12931-015-0254-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 07/21/2015] [Indexed: 12/23/2022] Open
Abstract
Background Epigenetic adjustments of the chromatin architecture through histone modifications are reactive to the environment and can establish chromatin states which are permissive or repressive to gene expression. Epigenetic regulation of gene expression is cell specific and therefore, it is important to understand its contribution to individual cellular responses in tissues like the airway epithelium which forms the mucosal barrier to the inhaled environment within the lung. The airway epithelium of asthmatics is abnormal with dysregulation of genes such as epidermal growth factor receptor (EGFR), the ΔN isoform of the transcription factor p63 (ΔNp63), and signal transducer and activator of transcription 6 (STAT6), integral to differentiation, proliferation, and inflammation. It is important to establish in diseases like asthma how histone modifications affect tissue responses such as proliferation and differentiation. Objectives To characterize the global histone acetylation and methylation status in the epithelium of asthmatic compared to healthy subjects and to identify the impact of these variations on genes involved in epithelial functions. Methods Whole lungs were obtained from healthy and asthmatic subjects (n = 6) from which airway epithelial cells (AECs) were isolated and airway sections were taken for analysis of histone lysine acetylation and methylation by immunohistochemistry. AECs were subjected to chromatin immunoprecipitation (ChIP) using anti-H3K18ac and anti-H3K4me2 antibodies followed by RT-PCR targeting ΔNp63, EGFR, and STAT6. AECs were also treated with TSA and changes in ΔNp63, EGFR, and STAT6 expression were determined. Results We identified an increase in the acetylation of lysine 18 on histone 3 (H3K18ac) and trimethylation of lysine 9 on histone 3 (H3K9me3) in the airway epithelium of asthmatic compared to healthy subjects. We found increased association of H3K18ac around the transcription start site of ΔNp63, EGFR, and STAT6 in AECs of asthmatics. However, we were unable to modify the expression of these genes with the use of the HDAC inhibitor TSA in healthy subjects. Discussion The airway epithelium from asthmatic subjects displays increased acetylation of H3K18 and association of this mark around the transcription start site of ΔNp63, EGFR, and STAT6. These findings suggest a complex interaction between histone modifications and gene regulation in asthma. Electronic supplementary material The online version of this article (doi:10.1186/s12931-015-0254-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Dorota Stefanowicz
- UBC Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard Street, Vancouver, V6Z 1Y6, BC, Canada.,Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Ja Young Lee
- UBC Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard Street, Vancouver, V6Z 1Y6, BC, Canada
| | - Kevin Lee
- UBC Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard Street, Vancouver, V6Z 1Y6, BC, Canada.,Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Furquan Shaheen
- UBC Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard Street, Vancouver, V6Z 1Y6, BC, Canada
| | - Hyun-Kyoung Koo
- UBC Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard Street, Vancouver, V6Z 1Y6, BC, Canada
| | - Steven Booth
- UBC Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard Street, Vancouver, V6Z 1Y6, BC, Canada.,Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Darryl A Knight
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW, Australia.,Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Tillie-Louise Hackett
- UBC Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard Street, Vancouver, V6Z 1Y6, BC, Canada. .,Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC, Canada.
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Dillenburg CS, Martins MAT, Almeida LO, Meurer L, Squarize CH, Martins MD, Castilho RM. Epigenetic Modifications and Accumulation of DNA Double-Strand Breaks in Oral Lichen Planus Lesions Presenting Poor Response to Therapy. Medicine (Baltimore) 2015; 94:e997. [PMID: 26222871 PMCID: PMC4554108 DOI: 10.1097/md.0000000000000997] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Epigenetics refers to changes in cell characteristics that occur independently of modifications to the deoxyribonucleic acid (DNA) sequence. Alterations mediated by epigenetic mechanisms are important factors in cancer progression. Although an exciting prospect, the identification of early epigenetic markers associated with clinical outcome in premalignant and malignant disorders remains elusive. We examined alterations in chromatin acetylation in oral lichen planus (OLP) with distinct clinical behavior and compared the alterations to the levels of DNA double-strand breaks (DSBs). We analyzed 42 OLP patients, who had different responses to therapy, for acetyl-histone H3 at lys9 (H3K9ac), which is associated with enhanced transcription and nuclear decondensation, and the presence of DSBs, as determined by accumulation of phosphorylated γH2AX foci. Patients with high levels of H3K9ac acetylation failed to respond to therapy or experienced disease recurrence shortly after therapy. Similar to H3K9ac, patients who responded poorly to therapy had increased accumulation of DNA DSB, indicating genomic instability. These findings suggest that histone modifications occur in OLP, and H3K9ac and γH2AX histones may serve as epigenetic markers for OLP recurrence.
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Affiliation(s)
- Caroline S Dillenburg
- From the Department of Oral Pathology (CSD, MDM), School of Dentistry; Department of Oral Medicine (MATM), Hospital de Clínicas de Porto Alegre (HCPA/UFRGS); Department of Pathology (LM), School of Medicine, Hospital de Clínicas de Porto Alegre (HCPA/UFRGS), Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil; and Laboratory of Epithelial Biology (CSD, MATM, LOA, CHS, MDM, RMC), Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
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Jeannet N, Fierz M, Schneider S, Künzi L, Baumlin N, Salathe M, Burtscher H, Geiser M. Acute toxicity of silver and carbon nanoaerosols to normal and cystic fibrosis human bronchial epithelial cells. Nanotoxicology 2015; 10:279-91. [DOI: 10.3109/17435390.2015.1049233] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Natalie Jeannet
- Institute of Anatomy, University of Bern, Bern, Switzerland,
| | - Martin Fierz
- Institute of Aerosol and Sensor Technology, University of Applied Sciences Northwestern Switzerland, Windisch, Switzerland, and
| | - Sarah Schneider
- Institute of Anatomy, University of Bern, Bern, Switzerland,
| | - Lisa Künzi
- Institute of Anatomy, University of Bern, Bern, Switzerland,
| | - Nathalie Baumlin
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Miami, Miami, FL, USA
| | - Matthias Salathe
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Miami, Miami, FL, USA
| | - Heinz Burtscher
- Institute of Aerosol and Sensor Technology, University of Applied Sciences Northwestern Switzerland, Windisch, Switzerland, and
| | - Marianne Geiser
- Institute of Anatomy, University of Bern, Bern, Switzerland,
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48
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Cetinkaya M, Cansev M, Cekmez F, Tayman C, Canpolat FE, Kafa IM, Yaylagul EO, Kramer BW, Sarici SU. Protective Effects of Valproic Acid, a Histone Deacetylase Inhibitor, against Hyperoxic Lung Injury in a Neonatal Rat Model. PLoS One 2015; 10:e0126028. [PMID: 25938838 PMCID: PMC4418724 DOI: 10.1371/journal.pone.0126028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Accepted: 02/12/2015] [Indexed: 01/01/2023] Open
Abstract
Objective Histone acetylation and deacetylation may play a role in the pathogenesis of inflammatory lung diseases. We evaluated the preventive effect of valproic acid (VPA), a histone deacetylase (HDAC) inhibitor, on neonatal hyperoxic lung injury. Methods Forty newborn rat pups were randomized in normoxia, normoxia+VPA, hyperoxia and hyperoxia+VPA groups. Pups in the normoxia and normoxia+VPA groups were kept in room air and received daily saline and VPA (30 mg/kg) injections, respectively, while those in hyperoxia and hyperoxia+VPA groups were exposed to 95% O2 and received daily saline and VPA (30 mg/kg) injections for 10 days, respectively. Growth, histopathological, biochemical and molecular biological indicators of lung injury, apoptosis, inflammation, fibrosis and histone acetylation were evaluated. Results VPA treatment during hyperoxia significantly improved weight gain, histopathologic grade, radial alveolar count and lamellar body membrane protein expression, while it decreased number of TUNEL(+) cells and active Caspase-3 expression. Expressions of TGFβ3 and phospho-SMAD2 proteins and levels of tissue proinflammatory cytokines as well as lipid peroxidation biomarkers were reduced, while anti-oxidative enzyme activities were enhanced by VPA treatment. VPA administration also reduced HDAC activity while increasing acetylated H3 and H4 protein expressions. Conclusions The present study shows for the first time that VPA treatment ameliorates lung damage in a neonatal rat model of hyperoxic lung injury. The preventive effect of VPA involves HDAC inhibition.
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Affiliation(s)
- Merih Cetinkaya
- Gulhane Military Medical Academy, Department of Pediatrics, Division of Neonatology, Ankara, Turkey
- * E-mail:
| | - Mehmet Cansev
- Uludag University Medical School, Department of Pharmacology, Bursa, Turkey
| | - Ferhat Cekmez
- Gulhane Military Medical Academy, Department of Pediatrics, Division of Neonatology, Ankara, Turkey
| | - Cuneyt Tayman
- Gulhane Military Medical Academy, Department of Pediatrics, Division of Neonatology, Ankara, Turkey
| | - Fuat Emre Canpolat
- Gulhane Military Medical Academy, Department of Pediatrics, Division of Neonatology, Ankara, Turkey
| | | | | | - Boris W. Kramer
- Maastricht University Medical Center, Department of Pediatrics, Maastricht, Netherlands
| | - Serdar Umit Sarici
- Gulhane Military Medical Academy, Department of Pediatrics, Division of Neonatology, Ankara, Turkey
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49
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Epigenetics of T cells regulated by Polycomb/Trithorax molecules. Trends Mol Med 2015; 21:330-40. [DOI: 10.1016/j.molmed.2015.03.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 03/09/2015] [Accepted: 03/11/2015] [Indexed: 02/07/2023]
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50
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Harb H, Renz H. Update on epigenetics in allergic disease. J Allergy Clin Immunol 2015; 135:15-24. [PMID: 25567039 DOI: 10.1016/j.jaci.2014.11.009] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 11/04/2014] [Accepted: 11/04/2014] [Indexed: 12/20/2022]
Abstract
Chronic inflammatory diseases, including allergies and asthma, are the result of complex gene-environment interactions. One of the most challenging questions in this regard relates to the biochemical mechanism of how exogenous environmental trigger factors modulate and modify gene expression, subsequently leading to the development of chronic inflammatory conditions. Epigenetics comprises the umbrella of biochemical reactions and mechanisms, such as DNA methylation and chromatin modifications on histones and other structures. Recently, several lifestyle and environmental factors have been investigated in terms of such biochemical interactions with the gene expression-regulating machinery: allergens; microbes and microbial compounds; dietary factors, including vitamin B12, folic acid, and fish oil; obesity; and stress. This article aims to update recent developments in this context with an emphasis on allergy and asthma research.
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Affiliation(s)
- Hani Harb
- Institute for Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps-Universität Marburg, Marburg, Germany
| | - Harald Renz
- Institute for Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps-Universität Marburg, Marburg, Germany.
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