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Xu J, Liu Z, Yang Q, Ma Q, Zhou Y, Cai Y, Zhao D, Zhao G, Lu T, Ouyang K, Hong M, Kim HW, Shi H, Zhang J, Fulton D, Miller C, Malhotra R, Weintraub NL, Huo Y. Adenosine kinase inhibition protects mice from abdominal aortic aneurysm via epigenetic modulation of VSMC inflammation. Cardiovasc Res 2024; 120:1202-1217. [PMID: 38722818 PMCID: PMC11368124 DOI: 10.1093/cvr/cvae093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/23/2023] [Accepted: 01/26/2024] [Indexed: 09/03/2024] Open
Abstract
AIMS Abdominal aortic aneurysm (AAA) is a common, serious vascular disease with no effective pharmacological treatment. The nucleoside adenosine plays an important role in modulating vascular homeostasis, which prompted us to determine whether adenosine kinase (ADK), an adenosine metabolizing enzyme, modulates AAA formation via control of the intracellular adenosine level, and to investigate the underlying mechanisms. METHODS AND RESULTS We used a combination of genetic and pharmacological approaches in murine models of AAA induced by calcium chloride (CaCl2) application or angiotensin II (Ang II) infusion to study the role of ADK in the development of AAA. In vitro functional assays were performed by knocking down ADK with adenovirus-short hairpin RNA in human vascular smooth muscle cells (VSMCs), and the molecular mechanisms underlying ADK function were investigated using RNA-sequencing, isotope tracing, and chromatin immunoprecipitation quantitative polymerase chain reaction (ChIP-qPCR). The heterozygous deficiency of ADK protected mice from CaCl2- and Ang II-induced AAA formation. Moreover, specific knockout of ADK in VSMCs prevented Ang II-induced AAA formation, as evidenced by reduced aortic extracellular elastin fragmentation, neovascularization, and aortic inflammation. Mechanistically, ADK knockdown in VSMCs markedly suppressed the expression of inflammatory genes associated with AAA formation, and these effects were independent of adenosine receptors. The metabolic flux and ChIP-qPCR results showed that ADK knockdown in VSMCs decreased S-adenosylmethionine (SAM)-dependent transmethylation, thereby reducing H3K4me3 binding to the promoter regions of the genes that are associated with inflammation, angiogenesis, and extracellular elastin fragmentation. Furthermore, the ADK inhibitor ABT702 protected mice from CaCl2-induced aortic inflammation, extracellular elastin fragmentation, and AAA formation. CONCLUSION Our findings reveal a novel role for ADK inhibition in attenuating AAA via epigenetic modulation of key inflammatory genes linked to AAA pathogenesis.
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MESH Headings
- Animals
- Humans
- Male
- Mice
- Adenosine/metabolism
- Adenosine/analogs & derivatives
- Adenosine Kinase/antagonists & inhibitors
- Angiotensin II/metabolism
- Aorta, Abdominal/pathology
- Aorta, Abdominal/metabolism
- Aorta, Abdominal/enzymology
- Aortic Aneurysm, Abdominal/prevention & control
- Aortic Aneurysm, Abdominal/chemically induced
- Aortic Aneurysm, Abdominal/pathology
- Aortic Aneurysm, Abdominal/enzymology
- Aortic Aneurysm, Abdominal/metabolism
- Aortic Aneurysm, Abdominal/genetics
- Aortitis/prevention & control
- Aortitis/enzymology
- Aortitis/pathology
- Aortitis/metabolism
- Aortitis/chemically induced
- Aortitis/genetics
- Calcium Chloride
- Cells, Cultured
- Disease Models, Animal
- DNA Methylation
- Epigenesis, Genetic
- Inflammation Mediators/metabolism
- Mice, Inbred C57BL
- Morpholines
- Muscle, Smooth, Vascular/enzymology
- Muscle, Smooth, Vascular/pathology
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/drug effects
- Myocytes, Smooth Muscle/enzymology
- Myocytes, Smooth Muscle/pathology
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/drug effects
- Protein Kinase Inhibitors/pharmacology
- Pyrimidines
- Signal Transduction
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Affiliation(s)
- Jiean Xu
- Department of Physiology, Research Centre of Basic Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, 232 Waihuan East Road, University Town, Guangzhou, 510006, China
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1460 Laney Walker Blvd, Augusta, GA 30912, USA
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Zhiping Liu
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1460 Laney Walker Blvd, Augusta, GA 30912, USA
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, 510632, China
| | - Qiuhua Yang
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1460 Laney Walker Blvd, Augusta, GA 30912, USA
| | - Qian Ma
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1460 Laney Walker Blvd, Augusta, GA 30912, USA
| | - Yaqi Zhou
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1460 Laney Walker Blvd, Augusta, GA 30912, USA
| | - Yongfeng Cai
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1460 Laney Walker Blvd, Augusta, GA 30912, USA
| | - Dingwei Zhao
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1460 Laney Walker Blvd, Augusta, GA 30912, USA
| | - Guizhen Zhao
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Tammy Lu
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1460 Laney Walker Blvd, Augusta, GA 30912, USA
- Emory University, Atlanta, GA 30322, USA
| | - Kunfu Ouyang
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Mei Hong
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Ha Won Kim
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1460 Laney Walker Blvd, Augusta, GA 30912, USA
| | - Huidong Shi
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Jifeng Zhang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - David Fulton
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1460 Laney Walker Blvd, Augusta, GA 30912, USA
| | - Clint Miller
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22903, USA
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA 22903, USA
| | - Rajeev Malhotra
- Division of Cardiology, Department of Medicine, Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Neal L Weintraub
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1460 Laney Walker Blvd, Augusta, GA 30912, USA
| | - Yuqing Huo
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1460 Laney Walker Blvd, Augusta, GA 30912, USA
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2
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Tota M, Łacwik J, Laska J, Sędek Ł, Gomułka K. The Role of Eosinophil-Derived Neurotoxin and Vascular Endothelial Growth Factor in the Pathogenesis of Eosinophilic Asthma. Cells 2023; 12:cells12091326. [PMID: 37174726 PMCID: PMC10177218 DOI: 10.3390/cells12091326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/23/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023] Open
Abstract
Asthma is a chronic complex pulmonary disease characterized by airway inflammation, remodeling, and hyperresponsiveness. Vascular endothelial growth factor (VEGF) and eosinophil-derived neurotoxin (EDN) are two significant mediators involved in the pathophysiology of asthma. In asthma, VEGF and EDN levels are elevated and correlate with disease severity and airway hyperresponsiveness. Diversity in VEGF polymorphisms results in the variability of responses to glucocorticosteroids and leukotriene antagonist treatment. Targeting VEGF and eosinophils is a promising therapeutic approach for asthma. We identified lichochalcone A, bevacizumab, azithromycin (AZT), vitamin D, diosmetin, epigallocatechin gallate, IGFBP-3, Neovastat (AE-941), endostatin, PEDF, and melatonin as putative add-on drugs in asthma with anti-VEGF properties. Further studies and clinical trials are needed to evaluate the efficacy of those drugs. AZT reduces the exacerbation rate and may be considered in adults with persistent symptomatic asthma. However, the long-term effects of AZT on community microbial resistance require further investigation. Vitamin D supplementation may enhance corticosteroid responsiveness. Herein, anti-eosinophil drugs are reviewed. Among them are, e.g., anti-IL-5 (mepolizumab, reslizumab, and benralizumab), anti-IL-13 (lebrikizumab and tralokinumab), anti-IL-4 and anti-IL-13 (dupilumab), and anti-IgE (omalizumab) drugs. EDN over peripheral blood eosinophil count is recommended to monitor the asthma control status and to assess the efficacy of anti-IL-5 therapy in asthma.
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Affiliation(s)
- Maciej Tota
- Student Scientific Group of Adult Allergology, Clinical Department of Internal Medicine, Pneumology and Allergology, Wroclaw Medical University, 50-369 Wrocław, Poland
| | - Julia Łacwik
- Student Scientific Group of Microbiology and Immunology, Department of Microbiology and Immunology, Zabrze, Medical University of Silesia in Katowice, 40-055 Katowice, Poland
| | - Julia Laska
- Student Scientific Group of Microbiology and Immunology, Department of Microbiology and Immunology, Zabrze, Medical University of Silesia in Katowice, 40-055 Katowice, Poland
| | - Łukasz Sędek
- Department of Microbiology and Immunology, Zabrze, Medical University of Silesia in Katowice, 40-055 Katowice, Poland
| | - Krzysztof Gomułka
- Clinical Department of Internal Medicine, Pneumology and Allergology, Wroclaw Medical University, 50-369 Wrocław, Poland
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3
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Laudanski K, Liu D, Hajj J, Ghani D, Szeto WY. Serum level of total histone 3, H3K4me3, and H3K27ac after non-emergent cardiac surgery suggests the persistence of smoldering inflammation at 3 months in an adult population. Clin Epigenetics 2022; 14:112. [PMID: 36068552 PMCID: PMC9446722 DOI: 10.1186/s13148-022-01331-6] [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: 05/03/2022] [Accepted: 08/24/2022] [Indexed: 11/29/2022] Open
Abstract
Background Despite clinical relevance of immunological activation due to histone leakage into the serum following cardiac surgery, long-term data describing their longitudinal dynamic are lacking. Therefore, this study examines the serum levels of histone 3 (tH3) and its modifications (H3K4me3 and H3K27ac) alongside immune system activation during the acute and convalescence phases of cardiac surgery. Methods Blood samples from fifty-nine individuals were collected before non-emergent cardiac surgery (tpre-op) and 24 h (t24hr), seven days (t7d), and three months (t3m) post-procedure to examine serum levels of tH3, H3K4me3, and H3K27ac. Serum heat shock protein-60 (HSP-60) was a surrogate of the cellular damage marker. Serum C-reactive protein (CRP) and interleukin 6 (IL-6) assessed smoldering inflammation. TNFα and IL-6 production by whole blood in response to lipopolysaccharide (LPS) evaluated immunological activation. Electronic medical records provided demographic, peri-operative, and clinical information. Paired longitudinal analyses were employed with data expressed as mean and standard deviation (X ± SD) or median and interquartile range (Me[IQ25; 75%]. Results Compared to pre-operative levels (tH3Pre-op = 1.6[0.33;2.4]), post-operative serum tH3 significantly (p > 0.0001) increased after heart surgery (tH324hr = 2.2[0.3;28]), remained elevated at 7 days (tH37d = 2.4[0.37;5.3]), and at 3 months (tH33m = 2.0[0.31;2.9]). Serum H3K27ac was elevated at 24 h (H3K27ac24hr = 0.66 ± 0.51; p = 0.025) and seven days (H3K27ac7d = 0.94 ± 0.95; p = 0.032) as compared to baseline hours (H3K27acPre-op = 0.55 ± 0.54). Serum H3K4me3 was significantly diminished at three months (H3K4me3Pre-op = 0.94 ± 0.54 vs. H3K27ac3m = 0.59 ± 0.89; p = 0.008). tH3 correlated significantly with the duration of anesthesia (r2 = 0.38). In contrast, HSP-60 normalized seven days after surgery. Peri-operative intake of acetaminophen, but no acetylsalicylic acid (ASA), acid, ketorolac or steroids, resulted in the significant depression of serum H3K4me3 at 24 h (H3K4me3acetom- = 1.26[0.71; 3.21] vs H3K4me3acetom+ = 0.54[0.07;1.01]; W[50] = 2.26; p = 0.021). CRP, but not IL-6, remained elevated at 3 months compared to pre-surgical levels and correlated with tH324hrs (r2 = 0.43), tH37d (r2 = 0.71; p < 0.05), H3K4me37d (r2 = 0.53), and H3K27ac7d (r2 = 0.49). Production of TNFα by whole blood in response to LPS was associated with serum tH324hrs (r2 = 0.67). Diminished H3K4me324hrs, H3K27ac24hrs, and H3K27ac3m, accompanied the emergence of liver failure. Conclusions We demonstrated a prolonged elevation in serum histone 3 three months after cardiac surgery. Furthermore, histone 3 modifications had a discrete time evolution indicating differential immune activation.
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Affiliation(s)
- Krzysztof Laudanski
- Department of Anesthesiology and Critical Care, University of Pennsylvania, JMB 127, 3620 Hamilton Walk, Philadelphia, PA, 19146, USA. .,Department of Neurology, University of Pennsylvania, JMB 127, 3620 Hamilton Walk, Philadelphia, PA, 19146, USA. .,Leonard Davis Institute for Health Economics, University of Pennsylvania, JMB 127, 3620 Hamilton Walk, Philadelphia, PA, 19146, USA.
| | - Da Liu
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China
| | - Jihane Hajj
- School of Nursing, Widener University, Philadelphia, PA, USA
| | - Danyal Ghani
- Department of Cardiac Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Wilson Y Szeto
- Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, PA, USA
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4
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Hu P, Chiarini A, Wu J, Wei Z, Armato U, Dal Prà I. Adult Human Vascular Smooth Muscle Cells on 3D Silk Fibroin Nonwovens Release Exosomes Enriched in Angiogenic and Growth-Promoting Factors. Polymers (Basel) 2022; 14:697. [PMID: 35215609 PMCID: PMC8875541 DOI: 10.3390/polym14040697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Our earlier works showed the quick vascularization of mouse skin grafted Bombyx mori 3D silk fibroin nonwoven scaffolds (3D-SFnws) and the release of exosomes enriched in angiogenic/growth factors (AGFs) from in vitro 3D-SFnws-stuck human dermal fibroblasts (HDFs). Here, we explored whether coronary artery adult human smooth muscle cells (AHSMCs) also release AGFs-enriched exosomes when cultured on 3D-SFnws in vitro. METHODS Media with exosome-depleted FBS served for AHSMCs and human endothelial cells (HECs) cultures on 3D-SFnws or polystyrene. Biochemical methods and double-antibody arrays assessed cell growth, metabolism, and intracellular TGF-β and NF-κB signalling pathways activation. AGFs conveyed by CD9+/CD81+ exosomes released from AHSMCs were double-antibody array analysed and their angiogenic power evaluated on HECs in vitro. RESULTS AHSMCs grew and consumed D-glucose more intensely and showed a stronger phosphorylation/activation of TAK-1, SMAD-1/-2/-4/-5, ATF-2, c-JUN, ATM, CREB, and an IκBα phosphorylation/inactivation on SFnws vs. polystyrene, consistent overall with a proliferative/secretory phenotype. SFnws-stuck AHSMCs also released exosomes richer in IL-1α/-2/-4/-6/-8; bFGF; GM-CSF; and GRO-α/-β/-γ, which strongly stimulated HECs' growth, migration, and tubes/nodes assembly in vitro. CONCLUSIONS Altogether, the intensified AGFs exosomal release from 3D-SFnws-attached AHSMCs and HDFs could advance grafts' colonization, vascularization, and take in vivo-noteworthy assets for prospective clinical applications.
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Affiliation(s)
- Peng Hu
- Human Histology & Embryology Section, Department of Surgery, Dentistry, Paediatrics & Gynaecology, University of Verona Medical School, 37134 Verona, Italy; (P.H.); (U.A.)
- Department of Burns & Plastic Surgery, The Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China;
| | - Anna Chiarini
- Human Histology & Embryology Section, Department of Surgery, Dentistry, Paediatrics & Gynaecology, University of Verona Medical School, 37134 Verona, Italy; (P.H.); (U.A.)
| | - Jun Wu
- Department of Burns and Plastic Surgery, Second People’s Hospital, University of Shenzhen, Shenzhen 518000, China;
| | - Zairong Wei
- Department of Burns & Plastic Surgery, The Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China;
| | - Ubaldo Armato
- Human Histology & Embryology Section, Department of Surgery, Dentistry, Paediatrics & Gynaecology, University of Verona Medical School, 37134 Verona, Italy; (P.H.); (U.A.)
- Department of Burns and Plastic Surgery, Second People’s Hospital, University of Shenzhen, Shenzhen 518000, China;
| | - Ilaria Dal Prà
- Human Histology & Embryology Section, Department of Surgery, Dentistry, Paediatrics & Gynaecology, University of Verona Medical School, 37134 Verona, Italy; (P.H.); (U.A.)
- Department of Burns and Plastic Surgery, Second People’s Hospital, University of Shenzhen, Shenzhen 518000, China;
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5
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Ran MY, Yuan Z, Fan CT, Ke Z, Wang XX, Sun JY, Su DJ. Multiplex-Heterogeneous Network-Based Capturing Potential SNP "Switches" of Pathways Associating With Diverse Disease Characteristics of Asthma. Front Cell Dev Biol 2022; 9:744932. [PMID: 34970542 PMCID: PMC8712737 DOI: 10.3389/fcell.2021.744932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/17/2021] [Indexed: 11/25/2022] Open
Abstract
Asthma is a complex heterogeneous respiratory disorder. In recent years nubbly regions of the role of genetic variants and transcriptome including mRNAs, microRNAs, and long non-coding RNAs in the pathogenesis of asthma have been separately excavated and reported. However, how to systematically integrate and decode this scattered information remains unclear. Further exploration would improve understanding of the internal communication of asthma. To excavate new insights into the pathogenesis of asthma, we ascertained three asthma characteristics according to reviews, airway inflammation, airway hyperresponsiveness, and airway remodeling. We manually created a contemporary catalog of corresponding risk transcriptome, including mRNAs, miRNAs, and lncRNAs. MIMP is a multiplex-heterogeneous networks-based approach, measuring the relevance of disease characteristics to the pathway by examining the similarity between the determined vectors of risk transcriptome and pathways in the same low-dimensional vector space. It was developed to enable a more concentrated and in-depth exploration of potential pathways. We integrated experimentally validated competing endogenous RNA regulatory information and the SNPs with significant pathways into the ceRNA-mediated SNP switching pathway network (CSSPN) to analyze ceRNA regulation of pathways and the role of SNP in these dysfunctions. We discovered 11 crucial ceRNA regulations concerning asthma disease feature pathway and propose a potential mechanism of ceRNA regulatory SNP → gene → pathway → disease feature effecting asthma pathogenesis, especially for MALAT1 (rs765499057/rs764699354/rs189435941) → hsa-miR-155 → IL13 (rs201185816/rs1000978586/rs202101165) → Interleukin-4 and Interleukin-13 signaling → inflammation/airway remodeling and MALAT1 (rs765499057/rs764699354/rs189435941) → hsa-miR-155 → IL17RB (rs948046241) → Interleukin-17 signaling (airway remodeling)/Cytokine-cytokine receptor interaction (inflammation). This study showed a systematic and propagable workflow for capturing the potential SNP “switch” of asthma through text and database mining and provides further information on the pathogenesis of asthma.
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Affiliation(s)
- Ming-Yu Ran
- Department of College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Zhang Yuan
- Department of Respiratory, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chui-Ting Fan
- Department of Respiratory, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Zhou Ke
- Department of Respiratory, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xin-Xing Wang
- Department of Respiratory, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jia-Yuan Sun
- Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Dong-Ju Su
- Department of Respiratory, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
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6
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Cheng G, Liu X, Li P, Li Y. Down-regulation of PTTG1 suppresses PDGF-BB-induced proliferation, migration and extracellular matrix production of airway smooth muscle cells (ASMCs) by regulating PI3K/AKT/mTOR signaling pathway. Mol Cell Toxicol 2021. [DOI: 10.1007/s13273-021-00155-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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7
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Alashkar Alhamwe B, Meulenbroek LAPM, Veening-Griffioen DH, Wehkamp TMD, Alhamdan F, Miethe S, Harb H, Hogenkamp A, Knippels LMJ, Pogge von Strandmann E, Renz H, Garssen J, van Esch BCAM, Garn H, Potaczek DP, Tiemessen MM. Decreased Histone Acetylation Levels at Th1 and Regulatory Loci after Induction of Food Allergy. Nutrients 2020; 12:E3193. [PMID: 33086571 PMCID: PMC7603208 DOI: 10.3390/nu12103193] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/13/2020] [Accepted: 10/16/2020] [Indexed: 12/12/2022] Open
Abstract
Immunoglobulin E (IgE)-mediated allergy against cow's milk protein fractions such as whey is one of the most common food-related allergic disorders of early childhood. Histone acetylation is an important epigenetic mechanism, shown to be involved in the pathogenesis of allergies. However, its role in food allergy remains unknown. IgE-mediated cow's milk allergy was successfully induced in a mouse model, as demonstrated by acute allergic symptoms, whey-specific IgE in serum, and the activation of mast cells upon a challenge with whey protein. The elicited allergic response coincided with reduced percentages of regulatory T (Treg) and T helper 17 (Th17) cells, matching decreased levels of H3 and/or H4 histone acetylation at pivotal Treg and Th17 loci, an epigenetic status favoring lower gene expression. In addition, histone acetylation levels at the crucial T helper 1 (Th1) loci were decreased, most probably preceding the expected reduction in Th1 cells after inducing an allergic response. No changes were observed for T helper 2 cells. However, increased histone acetylation levels, promoting gene expression, were observed at the signal transducer and activator of transcription 6 (Stat6) gene, a proallergic B cell locus, which was in line with the presence of whey-specific IgE. In conclusion, the observed histone acetylation changes are pathobiologically in line with the successful induction of cow's milk allergy, to which they might have also contributed mechanistically.
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Affiliation(s)
- Bilal Alashkar Alhamwe
- Institute of Laboratory Medicine, the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35039 Marburg, Germany; (B.A.A.); (F.A.); (S.M.); (H.H.); (H.R.); (H.G.); (D.P.P.)
- Institute of Tumor Immunology, Clinic for Hematology, Oncology and Immunology, Center for Tumor Biology and Immunology, Philipps University Marburg, 35039 Marburg, Germany;
- College of Pharmacy, International University for Science and Technology (IUST), Daraa 15, Syria
| | - Laura A. P. M. Meulenbroek
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (L.A.P.M.M.); (D.H.V.-G.); (T.M.D.W.); (L.M.J.K.); (J.G.); (B.C.A.M.v.E.)
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CT Utrecht, The Netherlands;
| | - Désirée H. Veening-Griffioen
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (L.A.P.M.M.); (D.H.V.-G.); (T.M.D.W.); (L.M.J.K.); (J.G.); (B.C.A.M.v.E.)
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CT Utrecht, The Netherlands;
| | - Tjalling M. D. Wehkamp
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (L.A.P.M.M.); (D.H.V.-G.); (T.M.D.W.); (L.M.J.K.); (J.G.); (B.C.A.M.v.E.)
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CT Utrecht, The Netherlands;
| | - Fahd Alhamdan
- Institute of Laboratory Medicine, the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35039 Marburg, Germany; (B.A.A.); (F.A.); (S.M.); (H.H.); (H.R.); (H.G.); (D.P.P.)
- Translational Inflammation Research Division & Core Facility for Single Cell Multiomics, the German Center for Lung Research (DZL), Universities of Giessen and Marburg Lung Center, Philipps University Marburg, 35039 Marburg, Germany
| | - Sarah Miethe
- Institute of Laboratory Medicine, the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35039 Marburg, Germany; (B.A.A.); (F.A.); (S.M.); (H.H.); (H.R.); (H.G.); (D.P.P.)
- Translational Inflammation Research Division & Core Facility for Single Cell Multiomics, the German Center for Lung Research (DZL), Universities of Giessen and Marburg Lung Center, Philipps University Marburg, 35039 Marburg, Germany
| | - Hani Harb
- Institute of Laboratory Medicine, the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35039 Marburg, Germany; (B.A.A.); (F.A.); (S.M.); (H.H.); (H.R.); (H.G.); (D.P.P.)
- Division of Immunology, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Astrid Hogenkamp
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CT Utrecht, The Netherlands;
| | - Léon M. J. Knippels
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (L.A.P.M.M.); (D.H.V.-G.); (T.M.D.W.); (L.M.J.K.); (J.G.); (B.C.A.M.v.E.)
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CT Utrecht, The Netherlands;
| | - Elke Pogge von Strandmann
- Institute of Tumor Immunology, Clinic for Hematology, Oncology and Immunology, Center for Tumor Biology and Immunology, Philipps University Marburg, 35039 Marburg, Germany;
| | - Harald Renz
- Institute of Laboratory Medicine, the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35039 Marburg, Germany; (B.A.A.); (F.A.); (S.M.); (H.H.); (H.R.); (H.G.); (D.P.P.)
| | - Johan Garssen
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (L.A.P.M.M.); (D.H.V.-G.); (T.M.D.W.); (L.M.J.K.); (J.G.); (B.C.A.M.v.E.)
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CT Utrecht, The Netherlands;
| | - Betty C. A. M. van Esch
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (L.A.P.M.M.); (D.H.V.-G.); (T.M.D.W.); (L.M.J.K.); (J.G.); (B.C.A.M.v.E.)
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CT Utrecht, The Netherlands;
| | - Holger Garn
- Institute of Laboratory Medicine, the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35039 Marburg, Germany; (B.A.A.); (F.A.); (S.M.); (H.H.); (H.R.); (H.G.); (D.P.P.)
- Translational Inflammation Research Division & Core Facility for Single Cell Multiomics, the German Center for Lung Research (DZL), Universities of Giessen and Marburg Lung Center, Philipps University Marburg, 35039 Marburg, Germany
| | - Daniel P. Potaczek
- Institute of Laboratory Medicine, the German Center for Lung Research (DZL) and the Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35039 Marburg, Germany; (B.A.A.); (F.A.); (S.M.); (H.H.); (H.R.); (H.G.); (D.P.P.)
- Translational Inflammation Research Division & Core Facility for Single Cell Multiomics, the German Center for Lung Research (DZL), Universities of Giessen and Marburg Lung Center, Philipps University Marburg, 35039 Marburg, Germany
- John Paul II Hospital, 31-202 Krakow, Poland
| | - Machteld M. Tiemessen
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (L.A.P.M.M.); (D.H.V.-G.); (T.M.D.W.); (L.M.J.K.); (J.G.); (B.C.A.M.v.E.)
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CT Utrecht, The Netherlands;
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8
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Yeung BHY, Huang J, An SS, Solway J, Mitzner W, Tang WY. Role of Isocitrate Dehydrogenase 2 on DNA Hydroxymethylation in Human Airway Smooth Muscle Cells. Am J Respir Cell Mol Biol 2020; 63:36-45. [PMID: 32150688 DOI: 10.1165/rcmb.2019-0323oc] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Global DNA hydroxymethylation mediated by the TET (ten-eleven translocation) enzyme was induced in allergen-induced airway hyperresponsiveness in mouse lung tissues and specifically in isolated airway smooth muscle (ASM) cells. TET is an α-ketoglutarate (α-KG)-dependent enzyme, and the production of α-KG is catalyzed by IDH (isocitrate dehydrogenase). However, the role of IDH in the regulation of DNA hydroxymethylation in ASM cells is unknown. In comparison with nonasthmatic cells, asthmatic ASM cells exhibited higher TET activity and IDH2 (but not IDH-1 or IDH-3) gene expression levels. We modified the expression of IDH2 in ASM cells from humans with asthma by siRNA and examined the α-KG levels, TET activity, global DNA hydroxymethylation, cell proliferation, and expression of ASM phenotypic genes. Inhibition of IDH2 in asthmatic ASM cells decreased the α-KG levels, TET activity, and global DNA hydroxymethylation, and reversed the aberrant ASM phenotypes (including decreased cell proliferation and ASM phenotypic gene expression). Specifically, asthmatic cells transfected with siRNA against IDH2 showed decreased 5hmC (5-hydroxymethylcytosine) levels at the TGFB2 (transforming growth factor-β2) promoter determined by oxidative bisulfite sequencing. Taken together, our findings reveal that IDH2 plays an important role in the epigenetic regulation of ASM phenotypic changes in asthmatic ASM cells, suggesting that IDH2 is a potential therapeutic target for reversing the abnormal phenotypes seen in asthma.
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Affiliation(s)
- Bonnie H Y Yeung
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Jessie Huang
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.,Center for Regenerative Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Steven S An
- Department of Pharmacology, Rutgers Robert Wood Johnson Medical School, The State University of New Jersey, Piscataway, New Jersey.,Rutgers Institute for Translational Medicine and Science, New Brunswick, New Jersey
| | - Julian Solway
- Department of Medicine, University of Chicago, Chicago, Illinois; and
| | - Wayne Mitzner
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Wan-Yee Tang
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.,Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania
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9
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Insights into glucocorticoid responses derived from omics studies. Pharmacol Ther 2020; 218:107674. [PMID: 32910934 DOI: 10.1016/j.pharmthera.2020.107674] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 08/20/2020] [Indexed: 12/26/2022]
Abstract
Glucocorticoid drugs are commonly used in the treatment of several conditions, including autoimmune diseases, asthma and cancer. Despite their widespread use and knowledge of biological pathways via which they act, much remains to be learned about the cell type-specific mechanisms of glucocorticoid action and the reasons why patients respond differently to them. In recent years, human and in vitro studies have addressed these questions with genomics, transcriptomics and other omics approaches. Here, we summarize key insights derived from omics studies of glucocorticoid response, and we identify existing knowledge gaps related to mechanisms of glucocorticoid action that future studies can address.
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10
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Dardente H, English WR, Valluru MK, Kanthou C, Simpson D. Debunking the Myth of the Endogenous Antiangiogenic Vegfaxxxb Transcripts. Trends Endocrinol Metab 2020; 31:398-409. [PMID: 32396842 DOI: 10.1016/j.tem.2020.01.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/28/2019] [Accepted: 01/14/2020] [Indexed: 12/19/2022]
Abstract
In this opinion article we critically assess evidence for the existence of a family of antiangiogenic vascular endothelial growth factor (Vegfaxxxb) transcripts, arising from the use of a phylogenetically conserved alternative distal splice site within exon 8 of the VEGFA gene. We explain that prior evidence for Vegfaxxxb transcripts in tissues rests heavily upon flawed RT-PCR methodologies, with the extensive use of 5'-tailing in primer design being the main issue. Furthermore, our analysis of large RNA-seq data sets (human and ovine) fails to identify a single Vegfaxxxb transcript. Therefore, we challenge the very existence of Vegfaxxxb transcripts, which further questions the physiological relevance of studies based on the use of 'anti-VEGFAxxxb' antibodies. Our analysis has implications for the proposed therapeutic use of isoform-specific anti-VEGFA strategies for treating cancer and retinopathies.
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Affiliation(s)
- Hugues Dardente
- PRC, INRA, CNRS, IFCE, Université de Tours, 37380 Nouzilly, France.
| | - William R English
- Department of Oncology and Metabolism, Tumour Microcirculation Group, University of Sheffield, School of Medicine, Beech Hill Road, Sheffield, S10 2RX, UK
| | - Manoj K Valluru
- Department of Oncology and Metabolism, Tumour Microcirculation Group, University of Sheffield, School of Medicine, Beech Hill Road, Sheffield, S10 2RX, UK
| | - Chryso Kanthou
- Department of Oncology and Metabolism, Tumour Microcirculation Group, University of Sheffield, School of Medicine, Beech Hill Road, Sheffield, S10 2RX, UK
| | - David Simpson
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, BT7 1NN, UK
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11
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Abdel-Aziz MI, Neerincx AH, Vijverberg SJ, Kraneveld AD, Maitland-van der Zee AH. Omics for the future in asthma. Semin Immunopathol 2020; 42:111-126. [PMID: 31942640 DOI: 10.1007/s00281-019-00776-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 12/22/2019] [Indexed: 12/31/2022]
Abstract
Asthma is a common, complex, multifaceted disease. It comprises multiple phenotypes, which might benefit from treatment with different types of innovative targeted therapies. Refining these phenotypes and understanding their underlying biological structure would help to apply precision medicine approaches. Using different omics methods, such as (epi)genomics, transcriptomics, proteomics, metabolomics, microbiomics, and exposomics, allowed to view and investigate asthma from diverse angles. Technological advancement led to a large increase in the application of omics studies in the asthma field. Although the use of omics technologies has reduced the gap between bench to bedside, several design and methodological challenges still need to be tackled before omics can be applied in asthma patient care. Collaborating under a centralized harmonized work frame (such as in consortia, under consistent methodologies) could help worldwide research teams to tackle these challenges. In this review, we discuss the transition of single biomarker research to multi-omics studies. In addition, we deliberate challenges such as the lack of standardization of sampling and analytical methodologies and validation of findings, which comes in between omics and personalized patient care. The future of omics in asthma is encouraging but not completely clear with some unanswered questions, which have not been adequately addressed before. Therefore, we highlight these questions and emphasize on the importance of fulfilling them.
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Affiliation(s)
- Mahmoud I Abdel-Aziz
- Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, Amsterdam, Netherlands.,Department of Clinical Pharmacy, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Anne H Neerincx
- Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, Amsterdam, Netherlands
| | - Susanne J Vijverberg
- Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, Amsterdam, Netherlands
| | - Aletta D Kraneveld
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands.,Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Anke H Maitland-van der Zee
- Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, Amsterdam, Netherlands. .,Department of Pediatric Respiratory Medicine, Emma Children's Hospital, Amsterdam UMC, Amsterdam, Netherlands.
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12
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Harman JL, Dobnikar L, Chappell J, Stokell BG, Dalby A, Foote K, Finigan A, Freire-Pritchett P, Taylor AL, Worssam MD, Madsen RR, Loche E, Uryga A, Bennett MR, Jørgensen HF. Epigenetic Regulation of Vascular Smooth Muscle Cells by Histone H3 Lysine 9 Dimethylation Attenuates Target Gene-Induction by Inflammatory Signaling. Arterioscler Thromb Vasc Biol 2019; 39:2289-2302. [PMID: 31434493 PMCID: PMC6818986 DOI: 10.1161/atvbaha.119.312765] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 08/07/2019] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Vascular inflammation underlies cardiovascular disease. Vascular smooth muscle cells (VSMCs) upregulate selective genes, including MMPs (matrix metalloproteinases) and proinflammatory cytokines upon local inflammation, which directly contribute to vascular disease and adverse clinical outcome. Identification of factors controlling VSMC responses to inflammation is therefore of considerable therapeutic importance. Here, we determine the role of Histone H3 lysine 9 di-methylation (H3K9me2), a repressive epigenetic mark that is reduced in atherosclerotic lesions, in regulating the VSMC inflammatory response. Approach and Results: We used VSMC-lineage tracing to reveal reduced H3K9me2 levels in VSMCs of arteries after injury and in atherosclerotic lesions compared with control vessels. Intriguingly, chromatin immunoprecipitation showed H3K9me2 enrichment at a subset of inflammation-responsive gene promoters, including MMP3, MMP9, MMP12, and IL6, in mouse and human VSMCs. Inhibition of G9A/GLP (G9A-like protein), the primary enzymes responsible for H3K9me2, significantly potentiated inflammation-induced gene induction in vitro and in vivo without altering NFκB (nuclear factor kappa-light-chain-enhancer of activated B cell) and MAPK (mitogen-activated protein kinase) signaling. Rather, reduced G9A/GLP activity enhanced inflammation-induced binding of transcription factors NFκB-p65 and cJUN to H3K9me2 target gene promoters MMP3 and IL6. Taken together, these results suggest that promoter-associated H3K9me2 directly attenuates the induction of target genes in response to inflammation in human VSMCs. CONCLUSIONS This study implicates H3K9me2 in regulating the proinflammatory VSMC phenotype. Our findings suggest that reduced H3K9me2 in disease enhance binding of NFκB and AP-1 (activator protein-1) transcription factors at specific inflammation-responsive genes to augment proinflammatory stimuli in VSMC. Therefore, H3K9me2-regulation could be targeted clinically to limit expression of MMPs and IL6, which are induced in vascular disease.
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Affiliation(s)
- Jennifer L. Harman
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
| | - Lina Dobnikar
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
- Babraham Institute, Babraham Research Campus, Cambridge, United Kingdom (L.D., P.F.-P.)
| | - Joel Chappell
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
| | - Benjamin G. Stokell
- Statistical Laboratory, Centre for Mathematical Sciences, University of Cambridge, United Kingdom (B.G.S.)
| | - Amanda Dalby
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
| | - Kirsty Foote
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
| | - Alison Finigan
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
| | | | - Annabel L. Taylor
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
| | - Matthew D. Worssam
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
| | - Ralitsa R. Madsen
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
| | - Elena Loche
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
| | - Anna Uryga
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
| | - Martin R. Bennett
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
| | - Helle F. Jørgensen
- From the Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, United Kingdom (J.L.H., L.D., J.C., A.D., K.F., A.F., A.L.T., M.D.W., R.R.M., E.L., A.U., M.R.B., H.F.J.)
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13
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Evasovic JM, Singer CA. Regulation of IL-17A and implications for TGF-β1 comodulation of airway smooth muscle remodeling in severe asthma. Am J Physiol Lung Cell Mol Physiol 2019; 316:L843-L868. [PMID: 30810068 PMCID: PMC6589583 DOI: 10.1152/ajplung.00416.2018] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 02/04/2019] [Accepted: 02/19/2019] [Indexed: 12/14/2022] Open
Abstract
Severe asthma develops as a result of heightened, persistent symptoms that generally coincide with pronounced neutrophilic airway inflammation. In individuals with severe asthma, symptoms are poorly controlled by high-dose inhaled glucocorticoids and often lead to elevated morbidity and mortality rates that underscore the necessity for novel drug target identification that overcomes limitations in disease management. Many incidences of severe asthma are mechanistically associated with T helper 17 (TH17) cell-derived cytokines and immune factors that mediate neutrophilic influx to the airways. TH17-secreted interleukin-17A (IL-17A) is an independent risk factor for severe asthma that impacts airway smooth muscle (ASM) remodeling. TH17-derived cytokines and diverse immune mediators further interact with structural cells of the airway to induce pathophysiological processes that impact ASM functionality. Transforming growth factor-β1 (TGF-β1) is a pivotal mediator involved in airway remodeling that correlates with enhanced TH17 activity in individuals with severe asthma and is essential to TH17 differentiation and IL-17A production. IL-17A can also reciprocally enhance activation of TGF-β1 signaling pathways, whereas combined TH1/TH17 or TH2/TH17 immune responses may additively impact asthma severity. This review seeks to provide a comprehensive summary of cytokine-driven T cell fate determination and TH17-mediated airway inflammation. It will further review the evidence demonstrating the extent to which IL-17A interacts with various immune factors, specifically TGF-β1, to contribute to ASM remodeling and altered function in TH17-driven endotypes of severe asthma.
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Affiliation(s)
- Jon M Evasovic
- Department of Pharmacology, School of Medicine, University of Nevada , Reno, Nevada
| | - Cherie A Singer
- Department of Pharmacology, School of Medicine, University of Nevada , Reno, Nevada
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14
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Zhang H, Lu J, Jiao Y, Chen Q, Li M, Wang Z, Yu Z, Huang X, Yao A, Gao Q, Xie W, Li L, Yao P. Aspirin Inhibits Natural Killer/T-Cell Lymphoma by Modulation of VEGF Expression and Mitochondrial Function. Front Oncol 2019; 8:679. [PMID: 30693272 PMCID: PMC6339948 DOI: 10.3389/fonc.2018.00679] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 12/24/2018] [Indexed: 12/21/2022] Open
Abstract
Extranodal nasal-type natural killer/T-cell lymphoma (NKTCL) is an Epstein-Barr virus (EBV)-associated lymphoma with a strong tendency relapse or be refractory in response to chemotherapy. Development of a new strategy for NKTCL treatment is still quite necessary. In this study, we found that aspirin treatment suppresses VEGF expression in NKTCL SNK-6 cells. Further investigation showed that aspirin treatment increases histone methylation in the range of −100~0 that is proximal to the transcription start site on the VEGF promoter, subsequently decreasing the binding ability of Sp1 to the VEGF promoter with VEGF suppression. Furthermore, aspirin treatment modulates mitochondrial function with increased ROS formation and apoptosis in NKTCL cells. Aspirin treatment alone slightly inhibits NKTCL SNK-6 tumor growth and EBV replication; while in the presence of histone deacetylase inhibitor (HDACi) chidamide (CDM), aspirin significantly suppresses the VEGF signaling pathway with increased ROS overgeneration and EBV inhibition. We also showed that with the addition of chidamide, aspirin significantly suppresses NKTCL tumor growth in both in vitro cell culture and in vivo mouse model with prolonged mouse survival. This is the first time that the potential mechanism for aspirin-mediated VEGF suppression and anti-tumor effect has been discovered, and this study provides a new strategy for anti-tumor drug development for NKTCL treatment based on aspirin-mediated targeting of the VEGF signaling pathway and ROS formation.
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Affiliation(s)
- Hongyu Zhang
- Department of Hematology, Peking University Shenzhen Hospital, Shenzhen, China
| | - Jianping Lu
- Department of Child Psychiatry, Kangning Hospital of Shenzhen, Shenzhen, China
| | - Yun Jiao
- Department of Pediatrics, Hainan Maternal and Child Health Hospital, Haikou, China
| | - Qi Chen
- Department of Hematology, Peking University Shenzhen Hospital, Shenzhen, China
| | - Min Li
- Institute of Rehabilitation Center, Tongren Hospital of Wuhan University, Wuhan, China
| | - Zichen Wang
- Department of Child Psychiatry, Kangning Hospital of Shenzhen, Shenzhen, China
| | - Zhendong Yu
- Department of Hematology, Peking University Shenzhen Hospital, Shenzhen, China
| | - Xiaodong Huang
- Institute of Rehabilitation Center, Tongren Hospital of Wuhan University, Wuhan, China
| | - Athena Yao
- Institute of Rehabilitation Center, Tongren Hospital of Wuhan University, Wuhan, China
| | - Qiong Gao
- Department of Gynecology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Weiguo Xie
- Institute of Rehabilitation Center, Tongren Hospital of Wuhan University, Wuhan, China
| | - Ling Li
- Department of Pediatrics, Hainan Maternal and Child Health Hospital, Haikou, China
| | - Paul Yao
- Department of Hematology, Peking University Shenzhen Hospital, Shenzhen, China.,Department of Child Psychiatry, Kangning Hospital of Shenzhen, Shenzhen, China.,Department of Pediatrics, Hainan Maternal and Child Health Hospital, Haikou, China.,Institute of Rehabilitation Center, Tongren Hospital of Wuhan University, Wuhan, China
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15
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Kaczmarek KA, Clifford RL, Knox AJ. Epigenetic Changes in Airway Smooth Muscle as a Driver of Airway Inflammation and Remodeling in Asthma. Chest 2018; 155:816-824. [PMID: 30414795 DOI: 10.1016/j.chest.2018.10.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 10/10/2018] [Accepted: 10/29/2018] [Indexed: 12/18/2022] Open
Abstract
Epigenetic changes are heritable changes in gene expression, without changing the DNA sequence. Epigenetic processes provide a critical link between environmental insults to the airway and functional changes that determine how airway cells respond to future stimuli. There are three primary epigenetic processes: histone modifications, DNA modification, and noncoding RNAs. Airway smooth muscle has several important roles in the development and maintenance of the pathologic processes occurring in asthma, including inflammation, remodeling, and contraction/hyperresponsiveness. In this review, we describe the evidence for the role of epigenetic changes in driving these processes in airway smooth muscle cells in asthma, with a particular focus on histone modifications. We also discuss how existing therapies may target some of these changes and how epigenetic processes provide targets for the development of novel asthma therapeutics. Epigenetic marks may also provide a biomarker to assess phenotype and treatment responses.
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Affiliation(s)
- Klaudia A Kaczmarek
- Division of Respiratory Medicine, Nottingham University Hospitals NHS Trust (City Hospital Campus); and the Nottingham NIHR Biomedical Research Centre, Nottingham MRC Molecular Pathology Node
| | - Rachel L Clifford
- Division of Respiratory Medicine, Nottingham University Hospitals NHS Trust (City Hospital Campus); and the Nottingham NIHR Biomedical Research Centre, Nottingham MRC Molecular Pathology Node
| | - Alan J Knox
- Division of Respiratory Medicine, Nottingham University Hospitals NHS Trust (City Hospital Campus); and the Nottingham NIHR Biomedical Research Centre, Nottingham MRC Molecular Pathology Node.
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16
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Mørkve Knudsen T, Rezwan FI, Jiang Y, Karmaus W, Svanes C, Holloway JW. Transgenerational and intergenerational epigenetic inheritance in allergic diseases. J Allergy Clin Immunol 2018; 142:765-772. [PMID: 30040975 PMCID: PMC6167012 DOI: 10.1016/j.jaci.2018.07.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/13/2018] [Accepted: 07/17/2018] [Indexed: 01/07/2023]
Abstract
It has become clear that early life (including in utero exposures) is a key window of vulnerability during which environmental exposures can alter developmental trajectories and initiate allergic disease development. However, recent evidence suggests that there might be additional windows of vulnerability to environmental exposures in the parental generation before conception or even in previous generations. There is evidence suggesting that information of prior exposures can be transferred across generations, and experimental animal models suggest that such transmission can be conveyed through epigenetic mechanisms. Although the molecular mechanisms of intergenerational and transgenerationational epigenetic transmission have yet to be determined, the realization that environment before conception can alter the risks of allergic diseases has profound implications for the development of public health interventions to prevent disease. Future research in both experimental models and in multigenerational human cohorts is needed to better understand the role of intergenerational and transgenerational effects in patients with asthma and allergic disease. This will provide the knowledge basis for a new approach to efficient intervention strategies aimed at reducing the major public health challenge of these conditions.
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Affiliation(s)
| | - Faisal I Rezwan
- Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Yu Jiang
- Division of Epidemiology, Biostatistics, and Environmental Health, School of Public Health, University of Memphis, Memphis, Tenn
| | - Wilfried Karmaus
- Division of Epidemiology, Biostatistics, and Environmental Health, School of Public Health, University of Memphis, Memphis, Tenn
| | - Cecilie Svanes
- Centre for International Health, Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway; Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
| | - John W Holloway
- Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, United Kingdom.
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17
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Alaskhar Alhamwe B, Khalaila R, Wolf J, von Bülow V, Harb H, Alhamdan F, Hii CS, Prescott SL, Ferrante A, Renz H, Garn H, Potaczek DP. Histone modifications and their role in epigenetics of atopy and allergic diseases. ALLERGY, ASTHMA, AND CLINICAL IMMUNOLOGY : OFFICIAL JOURNAL OF THE CANADIAN SOCIETY OF ALLERGY AND CLINICAL IMMUNOLOGY 2018; 14:39. [PMID: 29796022 PMCID: PMC5966915 DOI: 10.1186/s13223-018-0259-4] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 04/24/2018] [Indexed: 12/16/2022]
Abstract
This review covers basic aspects of histone modification and the role of posttranslational histone modifications in the development of allergic diseases, including the immune mechanisms underlying this development. Together with DNA methylation, histone modifications (including histone acetylation, methylation, phosphorylation, ubiquitination, etc.) represent the classical epigenetic mechanisms. However, much less attention has been given to histone modifications than to DNA methylation in the context of allergy. A systematic review of the literature was undertaken to provide an unbiased and comprehensive update on the involvement of histone modifications in allergy and the mechanisms underlying this development. In addition to covering the growing interest in the contribution of histone modifications in regulating the development of allergic diseases, this review summarizes some of the evidence supporting this contribution. There are at least two levels at which the role of histone modifications is manifested. One is the regulation of cells that contribute to the allergic inflammation (T cells and macrophages) and those that participate in airway remodeling [(myo-) fibroblasts]. The other is the direct association between histone modifications and allergic phenotypes. Inhibitors of histone-modifying enzymes may potentially be used as anti-allergic drugs. Furthermore, epigenetic patterns may provide novel tools in the diagnosis of allergic disorders.
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Affiliation(s)
- Bilal Alaskhar Alhamwe
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University Marburg, Hans-Meerwein-Straße 3, 35043 Marburg, Germany
- inVIVO Planetary Health, Group of the Worldwide Universities Network (WUN), New York, NJ USA
| | - Razi Khalaila
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University Marburg, Hans-Meerwein-Straße 3, 35043 Marburg, Germany
| | - Johanna Wolf
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University Marburg, Hans-Meerwein-Straße 3, 35043 Marburg, Germany
| | - Verena von Bülow
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University Marburg, Hans-Meerwein-Straße 3, 35043 Marburg, Germany
| | - Hani Harb
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University Marburg, Hans-Meerwein-Straße 3, 35043 Marburg, Germany
- inVIVO Planetary Health, Group of the Worldwide Universities Network (WUN), New York, NJ USA
- German Center for Lung Research (DZL), Gießen, Germany
- Present Address: Boston Children’s Hospital, Harvard Medical School, Boston, MA USA
| | - Fahd Alhamdan
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University Marburg, Hans-Meerwein-Straße 3, 35043 Marburg, Germany
| | - Charles S. Hii
- Department of Immunopathology, SA Pathology, Women and Children’s Hospital Campus, North Adelaide, SA Australia
- Robinson Research Institute, School of Medicine and School of Biological Science, University of Adelaide, Adelaide, SA Australia
| | - Susan L. Prescott
- inVIVO Planetary Health, Group of the Worldwide Universities Network (WUN), New York, NJ USA
- School of Paediatrics and Child Health, University of Western Australia, Perth, WA Australia
| | - Antonio Ferrante
- inVIVO Planetary Health, Group of the Worldwide Universities Network (WUN), New York, NJ USA
- Department of Immunopathology, SA Pathology, Women and Children’s Hospital Campus, North Adelaide, SA Australia
- Robinson Research Institute, School of Medicine and School of Biological Science, University of Adelaide, Adelaide, SA Australia
| | - Harald Renz
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University Marburg, Hans-Meerwein-Straße 3, 35043 Marburg, Germany
- inVIVO Planetary Health, Group of the Worldwide Universities Network (WUN), New York, NJ USA
- German Center for Lung Research (DZL), Gießen, Germany
| | - Holger Garn
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University Marburg, Hans-Meerwein-Straße 3, 35043 Marburg, Germany
- German Center for Lung Research (DZL), Gießen, Germany
| | - Daniel P. Potaczek
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University Marburg, Hans-Meerwein-Straße 3, 35043 Marburg, Germany
- inVIVO Planetary Health, Group of the Worldwide Universities Network (WUN), New York, NJ USA
- German Center for Lung Research (DZL), Gießen, Germany
- John Paul II Hospital, Krakow, Poland
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18
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Li JY, Zhang Y, Lin XP, Ruan Y, Wang Y, Wang CS, Zhang L. Association between DNA hypomethylation at IL13 gene and allergic rhinitis in house dust mite-sensitized subjects. Clin Exp Allergy 2016; 46:298-307. [PMID: 26399722 DOI: 10.1111/cea.12647] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 08/28/2015] [Accepted: 09/16/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND Allergic rhinitis (AR) is a complex disease, in which gene-environment interactions contribute to its pathogenesis. Epigenetic modifications such as DNA methylation play an important role in the regulation of gene function. As IL13, a pleiotropic cytokine, may be important in conferring susceptibility to AR, the aim of the present work was to assess the relationship between a CpG island methylation status at the upstream of IL13 gene and house dust mite (HDM)-sensitized AR in Han Chinese subjects. METHODS A total of 60 patients with HDM-sensitized AR and 65 control subjects were enrolled as two independent cohorts from Beijing and Liaoning. MassARRAY EpiTYPER and pyrosequencing was used to systematically screen the status of DNA methylation in peripheral blood leucocytes. IL13 mRNA expression was measured by real-time quantitative PCR. Electrophoretic mobility shift assay was used to assess the function of methylation site. RESULTS The mean level of methylation was decreased in the AR patient group compared with the control group (P = 0.01). Two of a total of 33 IL13CpG units analysed (CpG units 24 : 25 : 26 and 38 : 39) showed significant differences in methylation status between the AR patient group and the control group, with DNA hypomethylation at CpG38 significantly associated with higher risk of HDM-sensitized AR in both independent cohorts and a combined cohort (Beijing: OR = 1.24, 95%CI = 1.01-1.52, P = 0.036; Liaoning: OR = 1.62, 95%CI = 1.11-2.38, P = 0.013; Combined: OR = 1.31, 95%CI = 1.10-1.56, P = 0.002). Methylation level of CpG38 correlated negatively with both IL13 mRNA expression and serum total IgE level and affected the binding affinity of SP1. CONCLUSIONS DNA hypomethylation of IL13 gene may be associated with increased risk of AR from HDM sensitization.
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Affiliation(s)
- J Y Li
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Nasal diseases, Beijing Institute of Otolaryngology, Beijing, China
| | - Y Zhang
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Nasal diseases, Beijing Institute of Otolaryngology, Beijing, China.,Department of Allergy, Beijing TongRen Hospital, Capital Medical University, Beijing, China
| | - X P Lin
- Center of Allergy and Immunotherapy, The General Hospital of Shenyang Military Command, Shenyang, China
| | - Y Ruan
- Beijing Key Laboratory of Nasal diseases, Beijing Institute of Otolaryngology, Beijing, China
| | - Y Wang
- Beijing Key Laboratory of Nasal diseases, Beijing Institute of Otolaryngology, Beijing, China
| | - C S Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Nasal diseases, Beijing Institute of Otolaryngology, Beijing, China.,Department of Allergy, Beijing TongRen Hospital, Capital Medical University, Beijing, China
| | - L Zhang
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Nasal diseases, Beijing Institute of Otolaryngology, Beijing, China.,Department of Allergy, Beijing TongRen Hospital, Capital Medical University, Beijing, China
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19
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Prakash YS. Emerging concepts in smooth muscle contributions to airway structure and function: implications for health and disease. Am J Physiol Lung Cell Mol Physiol 2016; 311:L1113-L1140. [PMID: 27742732 DOI: 10.1152/ajplung.00370.2016] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 10/06/2016] [Indexed: 12/15/2022] Open
Abstract
Airway structure and function are key aspects of normal lung development, growth, and aging, as well as of lung responses to the environment and the pathophysiology of important diseases such as asthma, chronic obstructive pulmonary disease, and fibrosis. In this regard, the contributions of airway smooth muscle (ASM) are both functional, in the context of airway contractility and relaxation, as well as synthetic, involving production and modulation of extracellular components, modulation of the local immune environment, cellular contribution to airway structure, and, finally, interactions with other airway cell types such as epithelium, fibroblasts, and nerves. These ASM contributions are now found to be critical in airway hyperresponsiveness and remodeling that occur in lung diseases. This review emphasizes established and recent discoveries that underline the central role of ASM and sets the stage for future research toward understanding how ASM plays a central role by being both upstream and downstream in the many interactive processes that determine airway structure and function in health and disease.
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Affiliation(s)
- Y S Prakash
- Departments of Anesthesiology, and Physiology & Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
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20
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Lin AHY, Shang Y, Mitzner W, Sham JSK, Tang WY. Aberrant DNA Methylation of Phosphodiesterase [corrected] 4D Alters Airway Smooth Muscle Cell Phenotypes. Am J Respir Cell Mol Biol 2016; 54:241-9. [PMID: 26181301 DOI: 10.1165/rcmb.2015-0079oc] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Airway hyperresponsiveness (AHR) is a hallmark feature in asthma characterized by exaggerated airway contractile response to stimuli due to increased airway sensitivity and chronic airway remodeling. We have previously shown that allergen-induced AHR in mice is associated with aberrant DNA methylation in the lung genome, suggesting that AHR could be epigenetically regulated, and these changes might predispose the animals to asthma. Previous studies demonstrated that overexpression of phosphodiesterase 4D (PDE4D) is associated with increased AHR. However, epigenetic regulation of this gene in asthmatic airway smooth muscle cells (ASMCs) has not been examined. In this study, we aimed to examine the relationship between epigenetic regulation of PDE4D and ASMC phenotypes. We identified CpG site-specific hypomethylation at PDE4D promoter in human asthmatic ASMCs. We next used methylated oligonucleotides to introduce CpG site-specific methylation at PDE4D promoter and examined its effect on ASMCs. We showed that PDE4D methylation decreased cell proliferation and migration of asthmatic ASMCs. We further elucidated that methylated PDE4D decreased PDE4D expression in asthmatic ASMCs, increased cAMP level, and inhibited the aberrant increase in Ca(2+) level. Moreover, PDE4D methylation reduced the phosphorylation level of downstream effectors of Ca(2+) signaling, including myosin light chain kinase and p38. Taken together, our findings demonstrate that gene-specific epigenetic changes may predispose ASMCs to asthma through alterations in cell phenotypes. Modulation of ASMC phenotypes by methylated PDE4D oligonucleotides can reverse the aberrant ASMC functions to normal phenotypes. This has provided new insight to the development of novel therapeutic options for this debilitative disease.
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Affiliation(s)
- Amanda H Y Lin
- 1 Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland; and
| | - Yan Shang
- 2 Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Wayne Mitzner
- 2 Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - James S K Sham
- 1 Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland; and.,2 Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Wan-yee Tang
- 2 Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
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21
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Abstract
Airway hyperresponsiveness (AHR) is a defining characteristic of asthma that refers to the capacity of the airways to undergo exaggerated narrowing in response to stimuli that do not result in comparable degrees of airway narrowing in healthy subjects. Airway smooth muscle (ASM) contraction mediates airway narrowing, but it remains uncertain as to whether the smooth muscle is intrinsically altered in asthmatic subjects or is responding abnormally as a result of the milieu in which it sits. ASM in the trachea or major bronchi does not differ in its contractile characteristics in asthmatics, but the more pertinent peripheral airways await complete exploration. The mass of ASM is increased in many but not all asthmatics and therefore cannot be a unifying hypothesis for AHR, although when increased in mass it may contribute to AHR. The inability of a deep breath to reverse or prevent bronchial narrowing in asthma may reflect an intrinsic difference in the mechanisms that lead to softening of contracted ASM when subjected to stretch. Cytokines such as interleukin-13 and tumor necrosis factor-α promote a more contractile ASM phenotype. The composition and increased stiffness of the matrix in which ASM is embedded promotes a more proliferative and pro-inflammatory ASM phenotype, but the expected dedifferentiation and loss of contractility have not been shown. Airway epithelium may drive ASM proliferation and/or molecular remodeling in ways that may lead to AHR. In conclusion, AHR is likely multifactorial in origin, reflecting the plasticity of ASM properties in the inflammatory environment of the asthmatic airway.
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Affiliation(s)
- Anne-Marie Lauzon
- Meakins-Christie Laboratories, McGill University Health Center Research Institute, Montreal, QC, Canada; Department of Medicine, McGill University, Montreal, QC, Canada
| | - James G Martin
- Meakins-Christie Laboratories, McGill University Health Center Research Institute, Montreal, QC, Canada; Department of Medicine, McGill University, Montreal, QC, Canada
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22
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Comer BS, Camoretti-Mercado B, Kogut PC, Halayko AJ, Solway J, Gerthoffer WT. Cyclooxygenase-2 and microRNA-155 expression are elevated in asthmatic airway smooth muscle cells. Am J Respir Cell Mol Biol 2016; 52:438-47. [PMID: 25180620 DOI: 10.1165/rcmb.2014-0129oc] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Cyclooxygenase-2 (COX-2) expression and PGE2 secretion from human airway smooth muscle cells (hASMCs) may contribute to β2-adrenoceptor hyporesponsiveness, a clinical feature observed in some patients with asthma. hASMCs from patients with asthma exhibit elevated expression of cytokine-responsive genes, and in some instances this is attributable to an altered histone code and/or microRNA expression. We hypothesized that COX-2 expression and PGE2 secretion might be elevated in asthmatic hASMCs in response to proinflammatory signals in part due to altered histone acetylation and/or microRNA expression. hASMCs obtained from nonasthmatic and asthmatic human subjects were treated with cytomix (IL-1β, TNF-α, and IFN-γ). A greater elevation of COX-2 mRNA, COX-2 protein, and PGE2 secretion was observed in the asthmatic cells. We investigated histone H3/H4-acetylation, transcription factor binding, mRNA stability, p38 mitogen-activated protein kinase signaling, and microRNA (miR)-155 expression as potential mechanisms responsible for the differential elevation of COX-2 expression. We found that histone H3/H4-acetylation and transcription factor binding to the COX-2 promoter were similar in both groups, and histone H3/H4-acetylation did not increase after cytomix treatment. Cytomix treatment elevated NF-κB and RNA polymerase II binding to similar levels in both groups. COX-2 mRNA stability was increased in asthmatic cells. MiR-155 expression was higher in cytomix-treated asthmatic cells, and we show it enhances COX-2 expression and PGE2 secretion in asthmatic and nonasthmatic hASMCs. Thus, miR-155 expression positively correlates with COX-2 expression in the asthmatic hASMCs and may contribute to the elevated expression observed in these cells. These findings may explain, at least in part, β2-adrenoceptor hyporesponsiveness in patients with asthma.
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Affiliation(s)
- Brian S Comer
- 1 Department of Biochemistry and Molecular Biology, University of South Alabama, Mobile, Alabama
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23
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Abstract
Asthma is a chronic disease which causes recurrent breathlessness affecting 300 million people worldwide of whom 250,000 die annually. The epigenome is a set of heritable modifications and tags that affect the genome without changing the intrinsic DNA sequence. These marks include DNA methylation, modifications to histone proteins around which DNA is wrapped and expression of noncoding RNA. Alterations in all of these processes have been reported in patients with asthma. In some cases these differences are linked to disease severity and susceptibility and may account for the limited value of genetic studies in asthma. Animal models of asthma suggest that epigenetic modifications and processes are linked to asthma and may be tractable targets for therapeutic intervention.
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Affiliation(s)
- Peter O Brook
- Imperial College London, National Heart & Lung Institute, Dovehouse Street, London, SW3 6LY, UK
| | - Mark M Perry
- Imperial College London, National Heart & Lung Institute, Dovehouse Street, London, SW3 6LY, UK
| | - Ian M Adcock
- Imperial College London, National Heart & Lung Institute, Dovehouse Street, London, SW3 6LY, UK
| | - Andrew L Durham
- Imperial College London, National Heart & Lung Institute, Dovehouse Street, London, SW3 6LY, UK
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24
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A functional AT/G polymorphism in the 5'-untranslated region of SETDB2 in the IgE locus on human chromosome 13q14. Genes Immun 2015; 16:488-94. [PMID: 26378653 PMCID: PMC4763160 DOI: 10.1038/gene.2015.36] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 07/15/2015] [Accepted: 07/22/2015] [Indexed: 01/16/2023]
Abstract
The immunoglobulin E (IgE)-associated locus on human chromosome 13q14 influencing asthma-related traits contains the genes PHF11 and SETDB2. SETDB2 is located in the same linkage disequilibrium region as PHF11 and polymorphisms within SETDB2 have been shown to associate with total serum IgE levels. In this report, we sequenced the 15 exons of SETDB2 and identified a single previously ungenotyped mutation (AT/G, rs386770867) in the 5'-untranslated region of the gene. The polymorphism was found to be significantly associated with serum IgE levels in our asthma cohort (P=0.0012). Electrophoretic mobility shift assays revealed that the transcription factor Ying Yang 1 binds to the AT allele, whereas SRY (Sex determining Region Y) binds to the G allele. Allele-specific transcription analysis (allelotyping) was performed in 35 individuals heterozygous for rs386770867 from a panel of 200 British families ascertained through probands with severe stage 3 asthma. The AT allele was found to be significantly overexpressed in these individuals (P=1.26×10(-21)). A dual-luciferase assay with the pGL3 luciferase reporter gene showed that the AT allele significantly affects transcriptional activities. Our results indicate that the IgE-associated AT/G polymorphism (rs386770867) regulates transcription of SETDB2.
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25
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Yucesoy B, Kashon ML, Johnson VJ, Lummus ZL, Fluharty K, Gautrin D, Cartier A, Boulet LP, Sastre J, Quirce S, Tarlo SM, Cruz MJ, Munoz X, Luster MI, Bernstein DI. Genetic variants in TNFα, TGFB1, PTGS1 and PTGS2 genes are associated with diisocyanate-induced asthma. J Immunotoxicol 2015; 13:119-26. [PMID: 25721048 DOI: 10.3109/1547691x.2015.1017061] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Diisocyanates are the most common cause of occupational asthma, but risk factors are not well defined. A case-control study was conducted to investigate whether genetic variants in inflammatory response genes (TNFα, IL1α, IL1β, IL1RN, IL10, TGFB1, ADAM33, ALOX-5, PTGS1, PTGS2 and NAG-1/GDF15) are associated with increased susceptibility to diisocyanate asthma (DA). These genes were selected based on their role in asthmatic inflammatory processes and previously reported associations with asthma phenotypes. The main study population consisted of 237 Caucasian French Canadians from among a larger sample of 280 diisocyanate-exposed workers in two groups: workers with specific inhalation challenge (SIC) confirmed DA (DA(+), n = 95) and asymptomatic exposed workers (AW, n = 142). Genotyping was performed on genomic DNA, using a 5' nuclease PCR assay. After adjusting for potentially confounding variables of age, smoking status and duration of exposure, the PTGS1 rs5788 and TGFB1 rs1800469 single nucleotide polymorphisms (SNP) showed a protective effect under a dominant model (OR = 0.38; 95% CI = 0.17, 0.89 and OR = 0.38; 95% CI = 0.18, 0.74, respectively) while the TNFα rs1800629 SNP was associated with an increased risk of DA (OR = 2.08; 95% CI = 1.03, 4.17). Additionally, the PTGS2 rs20417 variant showed an association with increased risk of DA in a recessive genetic model (OR = 6.40; 95% CI = 1.06, 38.75). These results suggest that genetic variations in TNFα, TGFB1, PTGS1 and PTGS2 genes contribute to DA susceptibility.
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Affiliation(s)
- Berran Yucesoy
- a Division of Immunology , Allergy and Rheumatology, University of Cincinnati College of Medicine , Cincinnati , OH , USA .,b CDC/National Institute for Occupational Safety and Health, Health Effects Laboratory Division , Morgantown , WV , USA
| | - Michael L Kashon
- b CDC/National Institute for Occupational Safety and Health, Health Effects Laboratory Division , Morgantown , WV , USA
| | | | - Zana L Lummus
- a Division of Immunology , Allergy and Rheumatology, University of Cincinnati College of Medicine , Cincinnati , OH , USA
| | - Kara Fluharty
- b CDC/National Institute for Occupational Safety and Health, Health Effects Laboratory Division , Morgantown , WV , USA
| | - Denyse Gautrin
- d Université de Montréal, Hôpital du Sacré-Coeur de Montréal , Montreal , Quebec , Canada
| | - André Cartier
- d Université de Montréal, Hôpital du Sacré-Coeur de Montréal , Montreal , Quebec , Canada
| | | | - Joaquin Sastre
- f Department of Allergy , Fundación Jiménez Díaz and CIBER de Enfermedades Respiratorias CIBERES , Madrid , Spain
| | - Santiago Quirce
- g Department of Allergy , Hospital La Paz-IdiPAZ and CIBER de Enfermedades Respiratorias CIBERES , Madrid , Spain
| | - Susan M Tarlo
- h Department of Medicine , and.,i Dalla Lana School of Public Health, University of Toronto , Toronto , Ontario , Canada
| | - Maria-Jesus Cruz
- j Hospitals Vall D'Hebron, Barcelona and CIBER de Enfermedades Respiratorias CIBERES , Madrid , Spain , and
| | - Xavier Munoz
- j Hospitals Vall D'Hebron, Barcelona and CIBER de Enfermedades Respiratorias CIBERES , Madrid , Spain , and
| | - Michael I Luster
- k West Virginia University, School of Public Health , Morgantown , WV , USA
| | - David I Bernstein
- a Division of Immunology , Allergy and Rheumatology, University of Cincinnati College of Medicine , Cincinnati , OH , USA
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26
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Ge A, Liu Y, Zeng X, Kong H, Ma Y, Zhang J, Bai F, Huang M. Effect of diosmetin on airway remodeling in a murine model of chronic asthma. Acta Biochim Biophys Sin (Shanghai) 2015; 47:604-11. [PMID: 26033789 DOI: 10.1093/abbs/gmv052] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 04/17/2015] [Indexed: 11/14/2022] Open
Abstract
Bronchial asthma, one of the most common allergic diseases, is characterized by airway hyperresponsiveness (AHR), inflammation, and remodeling. The anti-oxidant flavone aglycone diosmetin ameliorates the inflammation in pancreatitis, but little is known about its impact on asthma. In this study, the effects of diosmetin on chronic asthma were investigated with an emphasis on the modulation of airway remodeling in BALB/c mice challenged with ovalbumin (OVA). It was found that diosmetin significantly relieved inflammatory cell infiltration, goblet cell hyperplasia, and collagen deposition in the lungs of asthmatic mice and notably reduced AHR in these animals. The OVA-induced increases in total cell and eosinophil counts in bronchoalveolar lavage fluid were reversed, and the level of OVA-specific immunoglobulin E in serum was attenuated by diosmetin administration, implying an anti-Th2 activity of diosmetin. Furthermore, diosmetin remarkably suppressed the expression of smooth muscle actin alpha chain, indicating a potent anti-proliferative effect of diosmetin on airway smooth muscle cells (ASMCs). Matrix metallopeptidase-9, transforming growth factor-β1, and vascular endothelial growth factor levels were also alleviated by diosmetin, suggesting that the remission of airway remodeling might be attributed to the decline of these proteins. Taken together, our findings provided a novel profile of diosmetin with anti-remodeling therapeutic benefits, highlighting a new potential of diosmetin in remitting the ASMC proliferation in chronic asthma.
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Affiliation(s)
- Ai Ge
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Yanan Liu
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Xiaoning Zeng
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Hui Kong
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Yuan Ma
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Jiaxiang Zhang
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Fangfang Bai
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Mao Huang
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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27
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Han Q, Yang P, Wu Y, Meng S, Sui L, Zhang L, Yu L, Tang Y, Jiang H, Xuan D, Kaplan DL, Kim SH, Tu Q, Chen J. Epigenetically Modified Bone Marrow Stromal Cells in Silk Scaffolds Promote Craniofacial Bone Repair and Wound Healing. Tissue Eng Part A 2015; 21:2156-65. [PMID: 25923143 DOI: 10.1089/ten.tea.2014.0484] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Epigenetic regulation of gene expression is a central mechanism that governs cell stemness, determination, commitment, and differentiation. It has been recently found that PHF8, a major H4K20/H3K9 demethylase, plays a critical role in craniofacial and bone development. In this study, we hypothesize that PHF8 promotes osteoblastogenesis by epigenetically regulating the expression of a nuclear matrix protein, special AT-rich sequence-binding protein 2 (SATB2) that plays pivotal roles in skeletal patterning and osteoblast differentiation. Our results showed that expression levels of PHF8 and SATB2 in preosteoblasts and bone marrow stromal cells (BMSCs) increased simultaneously during osteogenic induction. Overexpressing PHF8 in these cells upregulated the expression of SATB2, Runx2, osterix, and bone matrix proteins. Conversely, knockdown of PHF8 reduced the expression of these genes. Furthermore, ChIP assays confirmed that PHF8 specifically bound to the transcription start site (TSS) of the SATB2 promoter, and the expression of H3K9me1 at the TSS region of SATB2 decreased in PHF8 overexpressed group. Implantation of the BMSCs overexpressing PHF8 with silk protein scaffolds promoted bone regeneration in critical-sized defects in mouse calvaria. Taken together, our results demonstrated that PHF8 epigenetically modulates SATB2 activity, triggering BMSCs osteogenic differentiation and facilitating bone formation and regeneration in biodegradable silk scaffolds.
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Affiliation(s)
- Qianqian Han
- 1 Division of Oral Biology, Tufts University School of Dental Medicine , Boston, Massachusetts.,2 Shandong Provincial Key Lab of Oral Biomedicine , Jinan, China .,3 Guangdong Provincial Stomatological Hospital , Guangzhou, China
| | - Pishan Yang
- 2 Shandong Provincial Key Lab of Oral Biomedicine , Jinan, China .,4 Department of Periodontology, School of Stomatology, Shandong University , Jinan, China
| | - Yuwei Wu
- 1 Division of Oral Biology, Tufts University School of Dental Medicine , Boston, Massachusetts
| | - Shu Meng
- 1 Division of Oral Biology, Tufts University School of Dental Medicine , Boston, Massachusetts
| | - Lei Sui
- 1 Division of Oral Biology, Tufts University School of Dental Medicine , Boston, Massachusetts
| | - Lan Zhang
- 1 Division of Oral Biology, Tufts University School of Dental Medicine , Boston, Massachusetts
| | - Liming Yu
- 1 Division of Oral Biology, Tufts University School of Dental Medicine , Boston, Massachusetts
| | - Yin Tang
- 1 Division of Oral Biology, Tufts University School of Dental Medicine , Boston, Massachusetts
| | - Hua Jiang
- 1 Division of Oral Biology, Tufts University School of Dental Medicine , Boston, Massachusetts
| | - Dongying Xuan
- 1 Division of Oral Biology, Tufts University School of Dental Medicine , Boston, Massachusetts.,3 Guangdong Provincial Stomatological Hospital , Guangzhou, China
| | - David L Kaplan
- 5 Department of Biomedical Engineering, Tufts University , Medford, Massachusetts
| | - Sung Hoon Kim
- 6 Cancer Preventive Material Development Research Center (CPMDRC) and Institute, College of Oriental Medicine, Kyung Hee University , Seoul, Korea
| | - Qisheng Tu
- 1 Division of Oral Biology, Tufts University School of Dental Medicine , Boston, Massachusetts
| | - Jake Chen
- 1 Division of Oral Biology, Tufts University School of Dental Medicine , Boston, Massachusetts.,7 Department of Anatomy and Cell Biology, Tufts University School of Medicine , Sackler School of Graduate Biomedical Sciences, Boston, Massachusetts
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Clifford RL, Patel JK, John AE, Tatler AL, Mazengarb L, Brightling CE, Knox AJ. CXCL8 histone H3 acetylation is dysfunctional in airway smooth muscle in asthma: regulation by BET. Am J Physiol Lung Cell Mol Physiol 2015; 308:L962-72. [PMID: 25713319 PMCID: PMC4421784 DOI: 10.1152/ajplung.00021.2015] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 02/13/2015] [Indexed: 01/03/2023] Open
Abstract
Asthma is characterized by airway inflammation and remodeling and CXCL8 is a CXC chemokine that drives steroid-resistant neutrophilic airway inflammation. We have shown that airway smooth muscle (ASM) cells isolated from asthmatic individuals secrete more CXCL8 than cells from nonasthmatic individuals. Here we investigated chromatin modifications at the CXCL8 promoter in ASM cells from nonasthmatic and asthmatic donors to further understand how CXCL8 is dysregulated in asthma. ASM cells from asthmatic donors had increased histone H3 acetylation, specifically histone H3K18 acetylation, and increased binding of histone acetyltransferase p300 compared with nonasthmatic donors but no differences in CXCL8 DNA methylation. The acetylation reader proteins Brd3 and Brd4 were bound to the CXCL8 promoter and Brd inhibitors inhibited CXCL8 secretion from ASM cells by disrupting Brd4 and RNA polymerase II binding to the CXCL8 promoter. Our results show a novel dysregulation of CXCL8 transcriptional regulation in asthma characterized by a promoter complex that is abnormal in ASM cells isolated from asthmatic donors and can be modulated by Brd inhibitors. Brd inhibitors may provide a new therapeutic strategy for steroid-resistant inflammation.
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Affiliation(s)
- Rachel L Clifford
- Department of Respiratory Medicine and Nottingham Respiratory Research Unit, University of Nottingham, Nottingham, United Kingdom; and
| | - Jamie K Patel
- Department of Respiratory Medicine and Nottingham Respiratory Research Unit, University of Nottingham, Nottingham, United Kingdom; and
| | - Alison E John
- Department of Respiratory Medicine and Nottingham Respiratory Research Unit, University of Nottingham, Nottingham, United Kingdom; and
| | - Amanda L Tatler
- Department of Respiratory Medicine and Nottingham Respiratory Research Unit, University of Nottingham, Nottingham, United Kingdom; and
| | - Lisa Mazengarb
- Department of Respiratory Medicine and Nottingham Respiratory Research Unit, University of Nottingham, Nottingham, United Kingdom; and
| | - Christopher E Brightling
- Institute for Lung Health, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, United Kingdom
| | - Alan J Knox
- Department of Respiratory Medicine and Nottingham Respiratory Research Unit, University of Nottingham, Nottingham, United Kingdom; and
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Schedel M, Michel S, Gaertner VD, Toncheva AA, Depner M, Binia A, Schieck M, Rieger MT, Klopp N, von Berg A, Bufe A, Laub O, Rietschel E, Heinzmann A, Simma B, Vogelberg C, Genuneit J, Illig T, Kabesch M. Polymorphisms related to ORMDL3 are associated with asthma susceptibility, alterations in transcriptional regulation of ORMDL3, and changes in TH2 cytokine levels. J Allergy Clin Immunol 2015; 136:893-903.e14. [PMID: 25930191 DOI: 10.1016/j.jaci.2015.03.014] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Revised: 02/27/2015] [Accepted: 03/12/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Chromosome 17q21, harboring the orosomucoid 1-like 3 (ORMDL3) gene, has been consistently associated with childhood asthma in genome-wide association studies. OBJECTIVE We investigated genetic variants in and around ORMDL3 that can change the function of ORMDL3 and thus contribute to asthma susceptibility. METHODS We performed haplotype analyses and fine mapping of the ORMDL3 locus in a cross-sectional (International Study of Asthma and Allergies in Childhood Phase II, n = 3557 total subjects, n = 281 asthmatic patients) and case-control (Multicenter Asthma Genetics in Childhood Study/International Study of Asthma and Allergies in Childhood Phase II, n = 1446 total subjects, n = 763 asthmatic patients) data set to identify putative causal single nucleotide polymorphisms (SNPs) in the locus. Top asthma-associated polymorphisms were analyzed for allele-specific effects on transcription factor binding and promoter activity in vitro and gene expression in PBMCs after stimulation ex vivo. RESULTS Two haplotypes (H1 and H2) were significantly associated with asthma in the cross-sectional (P = 9.9 × 10(-5) and P = .0035, respectively) and case-control (P = 3.15 × 10(-8) and P = .0021, respectively) populations. Polymorphisms rs8076131 and rs4065275 were identified to drive these effects. For rs4065275, a quantitative difference in transcription factor binding was found, whereas for rs8076131, changes in upstream stimulatory factor 1 and 2 transcription factor binding were observed in vitro by using different cell lines and PBMCs. This might contribute to detected alterations in luciferase activity paralleled with changes in ORMDL3 gene expression and IL-4 and IL-13 cytokine levels ex vivo in response to innate and adaptive stimuli in an allele-specific manner. Both SNPs were in strong linkage disequilibrium with asthma-associated 17q21 SNPs previously related to altered ORMDL3 gene expression. CONCLUSION Polymorphisms in a putative promoter region of ORMDL3, which are associated with childhood asthma, alter transcriptional regulation of ORMDL3, correlate with changes in TH2 cytokines levels, and therefore might contribute to the childhood asthma susceptibility signal from 17q21.
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Affiliation(s)
- Michaela Schedel
- Department of Pediatrics, National Jewish Health, Denver, Colo; Department of Pediatric Pneumology, Allergy, and Neonatology, Hannover Medical School, Hannover, Germany
| | - Sven Michel
- Department of Pediatric Pneumology and Allergy, University Children's Hospital Regensburg (KUNO), Regensburg, Germany; Department of Pediatric Pneumology, Allergy, and Neonatology, Hannover Medical School, Hannover, Germany
| | - Vincent D Gaertner
- Department of Pediatric Pneumology and Allergy, University Children's Hospital Regensburg (KUNO), Regensburg, Germany
| | - Antoaneta A Toncheva
- Department of Pediatric Pneumology and Allergy, University Children's Hospital Regensburg (KUNO), Regensburg, Germany; Department of Pediatric Pneumology, Allergy, and Neonatology, Hannover Medical School, Hannover, Germany
| | - Martin Depner
- Children's Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Aristea Binia
- Department of Pediatric Pneumology and Allergy, University Children's Hospital Regensburg (KUNO), Regensburg, Germany; Nestlé Research Centre, Nutrition & Health Department, Lausanne, Switzerland
| | - Maximilian Schieck
- Department of Pediatric Pneumology and Allergy, University Children's Hospital Regensburg (KUNO), Regensburg, Germany; Department of Pediatric Pneumology, Allergy, and Neonatology, Hannover Medical School, Hannover, Germany
| | - Marie T Rieger
- Children's Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Norman Klopp
- Research Group of Molecular Epidemiology, Helmholtz Centre Munich, Neuherberg, Germany; Hannover Unified Biobank, Hannover Medical School, Hannover, Germany
| | - Andrea von Berg
- Research Institute for the Prevention of Allergic Diseases, Children's Department, Marien-Hospital, Wesel, Germany
| | - Albrecht Bufe
- Department of Experimental Pneumology, Ruhr-University, Bochum, Germany
| | - Otto Laub
- Children's Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Ernst Rietschel
- University Children's Hospital, University of Cologne, Cologne, Germany
| | - Andrea Heinzmann
- University Children's Hospital, Albert Ludwigs University, Freiburg, Germany
| | - Burkard Simma
- Children's Department, Feldkirch Hospital, Feldkirch, Austria
| | | | - Jon Genuneit
- Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
| | - Thomas Illig
- Research Group of Molecular Epidemiology, Helmholtz Centre Munich, Neuherberg, Germany; Hannover Unified Biobank, Hannover Medical School, Hannover, Germany
| | - Michael Kabesch
- Department of Pediatric Pneumology and Allergy, University Children's Hospital Regensburg (KUNO), Regensburg, Germany; Department of Pediatric Pneumology, Allergy, and Neonatology, Hannover Medical School, Hannover, Germany.
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Pałgan K, Bartuzi Z. Angiogenesis in bronchial asthma. Int J Immunopathol Pharmacol 2015; 28:415-20. [PMID: 25875602 DOI: 10.1177/0394632015580907] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 03/16/2015] [Indexed: 12/14/2022] Open
Abstract
Bronchial asthma is a chronic inflammatory disease characterised by airflow obstruction that may be reversed spontaneously or in response to treatment. The airway inflammation can lead to structural changes and remodelling consisting of subepithelial layer thickening, airway smooth muscle hyperplasia and angiogenesis. Subepithelial hypervascularity and angiogenesis in the airways are part of the structural airway wall in asthma. Increased vascularity of bronchial mucosa is closely related to the expression of angiogenic factors like vascular endothelial growth factor (VEGF), angiopoietin and hypoxia-inducible factor (HIF). The scope of the present review is to summarise the roles of anagiogenic factors and treatment in vascular development.
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Affiliation(s)
- Krzysztof Pałgan
- Department of Allergology, Clinical Immunology and Internal Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University of Toruń, Poland
| | - Zbigniew Bartuzi
- Department of Allergology, Clinical Immunology and Internal Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University of Toruń, Poland
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Systems biology of asthma and allergic diseases: a multiscale approach. J Allergy Clin Immunol 2014; 135:31-42. [PMID: 25468194 DOI: 10.1016/j.jaci.2014.10.015] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 10/10/2014] [Accepted: 10/15/2014] [Indexed: 01/15/2023]
Abstract
Systems biology is an approach to understanding living systems that focuses on modeling diverse types of high-dimensional interactions to develop a more comprehensive understanding of complex phenotypes manifested by the system. High-throughput molecular, cellular, and physiologic profiling of populations is coupled with bioinformatic and computational techniques to identify new functional roles for genes, regulatory elements, and metabolites in the context of the molecular networks that define biological processes associated with system physiology. Given the complexity and heterogeneity of asthma and allergic diseases, a systems biology approach is attractive, as it has the potential to model the myriad connections and interdependencies between genetic predisposition, environmental perturbations, regulatory intermediaries, and molecular sequelae that ultimately lead to diverse disease phenotypes and treatment responses across individuals. The increasing availability of high-throughput technologies has enabled system-wide profiling of the genome, transcriptome, epigenome, microbiome, and metabolome, providing fodder for systems biology approaches to examine asthma and allergy at a more holistic level. In this article we review the technologies and approaches for system-wide profiling, as well as their more recent applications to asthma and allergy. We discuss approaches for integrating multiscale data through network analyses and provide perspective on how individually captured health profiles will contribute to more accurate systems biology views of asthma and allergy.
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Salton M, Voss TC, Misteli T. Identification by high-throughput imaging of the histone methyltransferase EHMT2 as an epigenetic regulator of VEGFA alternative splicing. Nucleic Acids Res 2014; 42:13662-73. [PMID: 25414343 PMCID: PMC4267647 DOI: 10.1093/nar/gku1226] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Recent evidence points to a role of chromatin in regulation of alternative pre-mRNA splicing (AS). In order to identify novel chromatin regulators of AS, we screened an RNAi library of chromatin proteins using a cell-based high-throughput in vivo assay. We identified a set of chromatin proteins that regulate AS. Using simultaneous genome-wide expression and AS analysis, we demonstrate distinct and non-overlapping functions of these chromatin modifiers on transcription and AS. Detailed mechanistic characterization of one dual function chromatin modifier, the H3K9 methyltransferase EHMT2 (G9a), identified VEGFA as a major chromatin-mediated AS target. Silencing of EHMT2, or its heterodimer partner EHMT1, affects AS by promoting exclusion of VEGFA exon 6a, but does not alter total VEGFA mRNA levels. The epigenetic regulatory mechanism of AS by EHMT2 involves an adaptor system consisting of the chromatin modulator HP1γ, which binds methylated H3K9 and recruits splicing regulator SRSF1. The epigenetic regulation of VEGFA is physiologically relevant since EHMT2 is transcriptionally induced in response to hypoxia and triggers concomitant changes in AS of VEGFA. These results characterize a novel epigenetic regulatory mechanism of AS and they demonstrate separate roles of epigenetic modifiers in transcription and alternative splicing.
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Affiliation(s)
- Maayan Salton
- National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Ty C Voss
- National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Tom Misteli
- National Cancer Institute, NIH, Bethesda, MD 20892, USA
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33
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Comer BS, Ba M, Singer CA, Gerthoffer WT. Epigenetic targets for novel therapies of lung diseases. Pharmacol Ther 2014; 147:91-110. [PMID: 25448041 DOI: 10.1016/j.pharmthera.2014.11.006] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 11/06/2014] [Indexed: 12/13/2022]
Abstract
In spite of substantial advances in defining the immunobiology and function of structural cells in lung diseases there is still insufficient knowledge to develop fundamentally new classes of drugs to treat many lung diseases. For example, there is a compelling need for new therapeutic approaches to address severe persistent asthma that is insensitive to inhaled corticosteroids. Although the prevalence of steroid-resistant asthma is 5-10%, severe asthmatics require a disproportionate level of health care spending and constitute a majority of fatal asthma episodes. None of the established drug therapies including long-acting beta agonists or inhaled corticosteroids reverse established airway remodeling. Obstructive airways remodeling in patients with chronic obstructive pulmonary disease (COPD), restrictive remodeling in idiopathic pulmonary fibrosis (IPF) and occlusive vascular remodeling in pulmonary hypertension are similarly unresponsive to current drug therapy. Therefore, drugs are needed to achieve long-acting suppression and reversal of pathological airway and vascular remodeling. Novel drug classes are emerging from advances in epigenetics. Novel mechanisms are emerging by which cells adapt to environmental cues, which include changes in DNA methylation, histone modifications and regulation of transcription and translation by noncoding RNAs. In this review we will summarize current epigenetic approaches being applied to preclinical drug development addressing important therapeutic challenges in lung diseases. These challenges are being addressed by advances in lung delivery of oligonucleotides and small molecules that modify the histone code, DNA methylation patterns and miRNA function.
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Affiliation(s)
- Brian S Comer
- Department of Biochemistry and Molecular Biology, University of South Alabama, Mobile, AL, 36688, USA
| | - Mariam Ba
- Department of Pharmacology, University of Nevada School of Medicine, Reno, NV 89557, USA
| | - Cherie A Singer
- Department of Pharmacology, University of Nevada School of Medicine, Reno, NV 89557, USA
| | - William T Gerthoffer
- Department of Biochemistry and Molecular Biology, University of South Alabama, Mobile, AL, 36688, USA.
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Abstract
Immune-mediated pulmonary diseases are a group of diseases that resulted from immune imbalance initiated by allergens or of unknown causes. Inflammatory responses without restrictions cause tissue damage and remodeling, which leads to airway hyperactivity, destruction of alveolar architecture, and a resultant loss of lung function. Epigenetic mechanisms have been demonstrated to be involved in inflammation, autoimmunity, and cancer. Recent studies have identified that epigenetic changes also regulate molecular pathways in immune-mediated lung diseases. Aberrant DNA methylation status, dysregulation of histone modifications, as well as altered microRNAs expression could change transcription activity of genes involved in the development of immune-mediated pulmonary diseases, which contributes to skewed differentiation of T cells and proliferation and activation of myofibroblasts, leading to overproduction of inflammatory cytokines and excessive accumulation of extracellular matrix, respectively. Aside from this, epigenetics also explains how environmental exposure influence on gene transcription without genetic changes. It acts as a mediator of the interaction between environmental factors and genetic factors. Identification of the abnormal epigenetic marks in diseases provides novel biomarkers for prediction and diagnosis and affords novel therapeutic targets for those difficult clinical problems, such as steroid-resistance and rapidly progressing fibrosis. In this review, we summarized the latest experimental and translational epigenetic studies in immune-mediated pulmonary diseases, including asthma, idiopathic pulmonary fibrosis, tuberculosis, sarcoidosis, and silicosis.
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35
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McErlean P, Favoreto S, Costa FF, Shen J, Quraishi J, Biyasheva A, Cooper JJ, Scholtens DM, Vanin EF, de Bonaldo MF, Xie H, Soares MB, Avila PC. Human rhinovirus infection causes different DNA methylation changes in nasal epithelial cells from healthy and asthmatic subjects. BMC Med Genomics 2014; 7:37. [PMID: 24947756 PMCID: PMC4080608 DOI: 10.1186/1755-8794-7-37] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 06/18/2014] [Indexed: 01/15/2023] Open
Abstract
Background Mechanisms underlying the development of virus-induced asthma exacerbations remain unclear. To investigate if epigenetic mechanisms could be involved in virus-induced asthma exacerbations, we undertook DNA methylation profiling in asthmatic and healthy nasal epithelial cells (NECs) during Human Rhinovirus (HRV) infection in vitro. Methods Global and loci-specific methylation profiles were determined via Alu element and Infinium Human Methylation 450 K microarray, respectively. Principal components analysis identified the genomic loci influenced the most by disease-status and infection. Real-time PCR and pyrosequencing were used to confirm gene expression and DNA methylation, respectively. Results HRV infection significantly increased global DNA methylation in cells from asthmatic subjects only (43.6% to 44.1%, p = 0.04). Microarray analysis revealed 389 differentially methylated loci either based on disease status, or caused by virus infection. There were disease-associated DNA methylation patterns that were not affected by HRV infection as well as HRV-induced DNA methylation changes that were unique to each group. A common methylation locus stood out in response to HRV infection in both groups, where the small nucleolar RNA, H/ACA box 12 (SNORA12) is located. Further analysis indicated that a relationship existed between SNORA12 DNA methylation and gene expression in response to HRV infection. Conclusions We describe for the first time that Human rhinovirus infection causes DNA methylation changes in airway epithelial cells that differ between asthmatic and healthy subjects. These epigenetic differences may possibly explain the mechanism by which respiratory viruses cause asthma exacerbations.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Pedro C Avila
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
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36
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Saco TV, Parthasarathy PT, Cho Y, Lockey RF, Kolliputi N. Role of epigenetics in pulmonary hypertension. Am J Physiol Cell Physiol 2014; 306:C1101-5. [PMID: 24717578 PMCID: PMC4060002 DOI: 10.1152/ajpcell.00314.2013] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 04/06/2014] [Indexed: 11/22/2022]
Abstract
A significant amount of research has been conducted to examine the pathologic processes and epigenetic mechanisms contributing to peripheral hypertension. However, few studies have been carried out to understand the vascular remodeling behind pulmonary hypertension (PH), including peripheral artery muscularization, medial hypertrophy and neointima formation in proximal arteries, and plexiform lesion formation. Similarly, research examining some of the epigenetic principles that may contribute to this vascular remodeling, such as DNA methylation and histone modification, is minimal. The understanding of these principles may be the key to developing new and more effective treatments for PH. The purpose of this review is to summarize epigenetic research conducted in the field of hypertension that could possibly be used to understand the epigenetics of PH. Possible future therapies that could be pursued using information from these studies include selective histone deacetylase inhibitors and targeted DNA methyltransferases. Both of these could potentially be used to silence proproliferative or antiapoptotic genes that lead to decreased smooth muscle cell proliferation. Epigenetics may provide a glimmer of hope for the eventual improved treatment of this highly morbid and debilitating disease.
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Affiliation(s)
- Tara V Saco
- Division of Allergy and Immunology, Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Prasanna Tamarapu Parthasarathy
- Division of Allergy and Immunology, Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Young Cho
- Division of Allergy and Immunology, Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Richard F Lockey
- Division of Allergy and Immunology, Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Narasaiah Kolliputi
- Division of Allergy and Immunology, Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida
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37
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Abstract
PURPOSE OF REVIEW This review summarizes recent findings in the epigenetics of vascular cells and discusses the new challenges for therapeutic strategies of cardiovascular diseases. RECENT FINDINGS There is emerging optimism that epigenetic mechanisms can provide the missing link to connect (epi)genomes with the cause of complex diseases. Environmental factors like intrauterine conditions during fetal development appear to preprogram humans for complex diseases. The purpose of this review is to summarize the newest results about the inheritable epigenetic features of cardiovascular diseases. Also, the recently discovered role of small RNAs in epigenetic gene regulation is discussed. SUMMARY Epigenetic mechanisms of gene regulation will likely become major determinants in the pathogenesis of complex diseases and may offer new opportunities for the treatment of these diseases.
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Affiliation(s)
- Mikko P Turunen
- Department of Biotechnology and Molecular Medicine, A.I.Virtanen Institute, University of Eastern Finland, Kuopio, Finland
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Abstract
PURPOSE OF REVIEW Epigenetic mechanisms have the ability to alter the phenotype without changing the genetic code. The science of epigenetics has grown considerably in recent years, and future epigenetically based treatments or prevention strategies are likely. Epigenetic associations with asthma have received growing interest because genetic and environmental factors have been unable to independently explain the cause of asthma. RECENT FINDINGS Recent findings suggest that both the environment and underlying genetic sequence variation influence DNA methylation, which in turn seems to modify the risk conferred by genetic variants for various asthma phenotypes. In particular, DNA methylation may act as an archive of a variety of early developmental exposures, which then can modify the risk related to genetic variants. SUMMARY Current asthma treatments may control the symptoms of asthma but do not modify its natural history. Epigenetic mechanisms and novel explanatory models provide burgeoning approaches to significantly increase our understanding of the initiation and progression of asthma. Due to the inheritance of epigenetics, we anticipate a rapid emergence of critical information that will provide novel treatment strategies for asthma in the current generation and ultimately the prevention of asthma in future generations.
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Emerging targets for novel therapy of asthma. Curr Opin Pharmacol 2013; 13:324-30. [PMID: 23639507 DOI: 10.1016/j.coph.2013.04.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 04/02/2013] [Accepted: 04/05/2013] [Indexed: 12/27/2022]
Abstract
Significant advances in understanding the cell and molecular biology of inflammation and airway smooth muscle (ASM) contractility have identified several potential novel targets for therapies of asthma. New agents targeting G-protein coupled receptors (GPCRs) including bitter taste receptors (TAS2R) agonists and prostaglandin EP4 receptor agonists elicit ASM relaxation. The cAMP/PKA pathway continues to be a promising drug target with the emergence of new PDE inhibitors and a novel PKA target protein, HSP20, which mediates smooth muscle relaxation via actin depolymerization. Smooth muscle relaxation can also be elicited by inhibitors of the RhoA/Rho kinase pathway via inhibition of myosin light chain phosphorylation and actin depolymerization. Targeting epigenetic processes that control chromatin remodeling and RNA-induced gene silencing in airway cells also holds great potential for novel asthma therapy. Further investigation may identify agents that inhibit smooth muscle contraction and/or restrain or reverse obstructive remodeling of the airways.
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40
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Meyer N, Akdis CA. Vascular endothelial growth factor as a key inducer of angiogenesis in the asthmatic airways. Curr Allergy Asthma Rep 2013; 13:1-9. [PMID: 23076420 DOI: 10.1007/s11882-012-0317-9] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Asthma is a chronic inflammatory disease of the airways characterized by structural airway changes, which are known as airway remodeling, including smooth muscle hypertrophy, goblet cell hyperplasia, subepithelial fibrosis, and angiogenesis. Vascular remodeling in asthmatic lungs results from increased angiogenesis, which is mainly mediated by vascular endothelial growth factor (VEGF). VEGF is a key regulator of blood vessel growth in the airways of asthma patients by promoting proliferation and differentiation of endothelial cells and inducing vascular leakage and permeability. In addition, VEGF induces allergic inflammation, enhances allergic sensitization, and has a role in Th2 type inflammatory responses. Specific inhibitors of VEGF and blockers of its receptors might be useful to control chronic airway inflammation and vascular remodeling, and might be a new therapeutic approach for chronic inflammatory airway disease like asthma.
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Affiliation(s)
- Norbert Meyer
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Christine Kühne Center for Allergy Research and Education (CK-CARE), Davos, Switzerland.
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41
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Clifford RL, Singer CA, John AE. Epigenetics and miRNA emerge as key regulators of smooth muscle cell phenotype and function. Pulm Pharmacol Ther 2013; 26:75-85. [PMID: 22800879 PMCID: PMC4076625 DOI: 10.1016/j.pupt.2012.07.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 07/02/2012] [Accepted: 07/04/2012] [Indexed: 10/28/2022]
Abstract
Regulation of phenotypic plasticity in smooth muscle requires an understanding of the mechanisms regulating phenotype-specific genes and the processes dysregulated during pathogenesis. Decades of study in airway smooth muscle has provided extensive knowledge of the gene expression patterns and signaling pathways necessary to maintain and alter smooth muscle cell phenotype. With this solid foundation, the importance and complexity of inheritable epigenetic modifications and mechanisms silencing gene expression have now emerged as fundamental components regulating aspects of inflammation, proliferation and remodeling.
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Affiliation(s)
- Rachel L. Clifford
- University of Nottingham Division of Respiratory Medicine and Nottingham Respiratory Research Unit Clinical Sciences Building, City Hospital Hucknall Road, Nottingham NG5 1PB, England, UK
| | - Cherie A. Singer
- University of Nevada School of Medicine Center for Molecular Medicine 573 Department of Pharmacology, Reno, NV 89557, USA
| | - Alison E. John
- Corresponding Author University of Nottingham Division of Respiratory Medicine and Nottingham Respiratory Research Unit Clinical Sciences Building, City Hospital Hucknall Road, Nottingham NG5 1PB, England, UK Tel:+44 115 8231106 Fax: +44 115 8231946
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