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Yang MM, Lee S, Neely J, Hinchcliff M, Wolters PJ, Sirota M. Gene expression meta-analysis reveals aging and cellular senescence signatures in scleroderma-associated interstitial lung disease. Front Immunol 2024; 15:1326922. [PMID: 38348044 PMCID: PMC10859856 DOI: 10.3389/fimmu.2024.1326922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/05/2024] [Indexed: 02/15/2024] Open
Abstract
Aging and cellular senescence are increasingly recognized as key contributors to pulmonary fibrosis. However, our understanding in the context of scleroderma-associated interstitial lung disease (SSc-ILD) is limited. To investigate, we leveraged previously established lung aging- and cell-specific senescence signatures to determine their presence and potential relevance to SSc-ILD. We performed a gene expression meta-analysis of lung tissues from 38 SSc-ILD and 18 healthy controls and found that markers (GDF15, COMP, and CDKN2A) and pathways (p53) of senescence were significantly increased in SSc-ILD. When probing the established aging and cellular senescence signatures, we found that epithelial and fibroblast senescence signatures had a 3.6- and 3.7-fold enrichment, respectively, in the lung tissue of SSc-ILD and that lung aging genes (CDKN2A, FRZB, PDE1A, and NAPI12) were increased in SSc-ILD. These signatures were also enriched in SSc skin and associated with degree of skin involvement (limited vs. diffuse cutaneous). To further support these findings, we examined telomere length (TL), a surrogate for aging, in the lung tissue and found that, independent of age, SSc-ILD had significantly shorter telomeres than controls in type II alveolar cells in the lung. TL in SSc-ILD was comparable to idiopathic pulmonary fibrosis, a disease of known aberrant aging. Taken together, this study provides novel insight into the possible mechanistic effects of accelerated aging and aberrant cellular senescence in SSc-ILD pathogenesis.
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Affiliation(s)
- Monica M. Yang
- Division of Rheumatology, Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
| | - Seoyeon Lee
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
| | - Jessica Neely
- Division of Pediatric Rheumatology, Department of Pediatrics, University of California, San Francisco, San Francisco, CA, United States
| | - Monique Hinchcliff
- Division of Rheumatology, Allergy and Immunology, Department of Internal Medicine, Yale School of Medicine, New Haven, CT, United States
| | - Paul J. Wolters
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
| | - Marina Sirota
- Department of Pediatrics, University of California, San Francisco, San Francisco, CA, United States
- Bakar Computational Health Sciences Institute, University of California, San Francisco, San Francisco, CA, United States
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2
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Greenland JR, Guo R, Lee S, Tran L, Kapse B, Kukreja J, Hays SR, Golden JA, Calabrese DR, Singer JP, Wolters PJ. Short airway telomeres are associated with primary graft dysfunction and chronic lung allograft dysfunction. J Heart Lung Transplant 2023; 42:1700-1709. [PMID: 37648073 PMCID: PMC10858720 DOI: 10.1016/j.healun.2023.08.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 07/17/2023] [Accepted: 08/20/2023] [Indexed: 09/01/2023] Open
Abstract
Primary graft dysfunction (PGD) is a major risk factor for chronic lung allograft dysfunction (CLAD) following lung transplantation, but the mechanisms linking these pathologies are poorly understood. We hypothesized that the replicative stress induced by PGD would lead to erosion of telomeres, and that this telomere dysfunction could potentiate CLAD. In a longitudinal cohort of 72 lung transplant recipients with >6 years median follow-up time, we assessed tissue telomere length, PGD grade, and freedom from CLAD. Epithelial telomere length and fibrosis-associated gene expression were assessed on endobronchial biopsies taken at 2 to 4 weeks post-transplant by TeloFISH assay and nanoString digital RNA counting. Negative-binomial mixed-effects and Cox-proportional hazards models accounted for TeloFISH staining batch effects and subject characteristics including donor age. Increasing grade of PGD severity was associated with shorter airway epithelial telomere lengths (p = 0.01). Transcriptomic analysis of fibrosis-associated genes showed alteration in fibrotic pathways in airway tissue recovering from PGD, while telomere dysfunction was associated with inflammation and impaired remodeling. Shorter tissue telomere length was in turn associated with increased CLAD risk, with a hazard ratio of 1.89 (95% CI 1.16-3.06) per standard deviation decrease in airway telomere length, after adjusting for subject characteristics. PGD may accelerate telomere dysfunction, potentiating immune responses and dysregulated repair. Epithelial cell telomere dysfunction may represent one of several mechanisms linking PGD to CLAD.
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Affiliation(s)
- John R Greenland
- Department of Medicine, University of California, San Francisco, San Francisco California; Medical Service, San Francisco Veterans Affairs Health Care System, San Francisco California.
| | - Ruyin Guo
- Department of Medicine, University of California, San Francisco, San Francisco California
| | - Seoyeon Lee
- Department of Medicine, University of California, San Francisco, San Francisco California
| | - Lily Tran
- Department of Medicine, University of California, San Francisco, San Francisco California
| | - Bhavya Kapse
- Department of Medicine, University of California, San Francisco, San Francisco California
| | - Jasleen Kukreja
- Department of Surgery, University of California, San Francisco, San Francisco California
| | - Steven R Hays
- Department of Medicine, University of California, San Francisco, San Francisco California
| | - Jeffrey A Golden
- Department of Medicine, University of California, San Francisco, San Francisco California
| | - Daniel R Calabrese
- Department of Medicine, University of California, San Francisco, San Francisco California; Medical Service, San Francisco Veterans Affairs Health Care System, San Francisco California
| | - Jonathan P Singer
- Department of Medicine, University of California, San Francisco, San Francisco California
| | - Paul J Wolters
- Department of Medicine, University of California, San Francisco, San Francisco California
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3
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Yang MM, Lee S, Neely J, Hinchcliff M, Wolters PJ, Sirota M. Gene Expression Meta-Analysis Reveals Aging and Cellular Senescence Signatures in Scleroderma-associated Interstitial Lung Disease. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.06.565810. [PMID: 37986995 PMCID: PMC10659335 DOI: 10.1101/2023.11.06.565810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Aging and cellular senescence are increasingly recognized as key contributors to pulmonary fibrosis. However, our understanding in the context of scleroderma associated interstitial lung disease (SSc-ILD) is limited. To investigate, we leveraged previously established lung aging and cell-specific senescence signatures to determine their presence and potential relevance to SSc-ILD. We performed a gene expression meta-analysis of lung tissue from 38 SSc-ILD and 18 healthy controls and found markers (GDF15, COMP, CDKN2A) and pathways (p53) of senescence were significantly increased in SSc-ILD. When probing the established aging and cellular senescence signatures, we found epithelial and fibroblast senescence signatures had a 3.6-fold and 3.7-fold enrichment respectively in the lung tissue of SSc-ILD and that lung aging genes ( CDKN2A, FRZB, PDE1A, NAPI12) were increased in SSc-ILD. These signatures were also enriched in SSc skin and associated with degree of skin involvement (limited vs. diffuse cutaneous). To further support these findings, we examined telomere length (TL), a surrogate for aging, in lung tissue and found independent of age, SSc-ILD had significantly shorter telomeres than controls in type II alveolar cells in the lung. TL in SSc-ILD was comparable to idiopathic pulmonary fibrosis, a disease of known aberrant aging. Taken together, this study provides novel insight into the possible mechanistic effects of accelerated aging and aberrant cellular senescence in SSc-ILD pathogenesis.
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4
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He M, Borlak J. A genomic perspective of the aging human and mouse lung with a focus on immune response and cellular senescence. Immun Ageing 2023; 20:58. [PMID: 37932771 PMCID: PMC10626779 DOI: 10.1186/s12979-023-00373-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 09/12/2023] [Indexed: 11/08/2023]
Abstract
BACKGROUND The aging lung is a complex process and influenced by various stressors, especially airborne pathogens and xenobiotics. Additionally, a lifetime exposure to antigens results in structural and functional changes of the lung; yet an understanding of the cell type specific responses remains elusive. To gain insight into age-related changes in lung function and inflammaging, we evaluated 89 mouse and 414 individual human lung genomic data sets with a focus on genes mechanistically linked to extracellular matrix (ECM), cellular senescence, immune response and pulmonary surfactant, and we interrogated single cell RNAseq data to fingerprint cell type specific changes. RESULTS We identified 117 and 68 mouse and human genes linked to ECM remodeling which accounted for 46% and 27%, respectively of all ECM coding genes. Furthermore, we identified 73 and 31 mouse and human genes linked to cellular senescence, and the majority code for the senescence associated secretory phenotype. These cytokines, chemokines and growth factors are primarily secreted by macrophages and fibroblasts. Single-cell RNAseq data confirmed age-related induced expression of marker genes of macrophages, neutrophil, eosinophil, dendritic, NK-, CD4+, CD8+-T and B cells in the lung of aged mice. This included the highly significant regulation of 20 genes coding for the CD3-T-cell receptor complex. Conversely, for the human lung we primarily observed macrophage and CD4+ and CD8+ marker genes as changed with age. Additionally, we noted an age-related induced expression of marker genes for mouse basal, ciliated, club and goblet cells, while for the human lung, fibroblasts and myofibroblasts marker genes increased with age. Therefore, we infer a change in cellular activity of these cell types with age. Furthermore, we identified predominantly repressed expression of surfactant coding genes, especially the surfactant transporter Abca3, thus highlighting remodeling of surfactant lipids with implications for the production of inflammatory lipids and immune response. CONCLUSION We report the genomic landscape of the aging lung and provide a rationale for its growing stiffness and age-related inflammation. By comparing the mouse and human pulmonary genome, we identified important differences between the two species and highlight the complex interplay of inflammaging, senescence and the link to ECM remodeling in healthy but aged individuals.
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Affiliation(s)
- Meng He
- Centre for Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Jürgen Borlak
- Centre for Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
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Joshi I, Devine AJ, Joshi R, Smith NJ, Varisco BM. A titratable murine model of progressive emphysema using tracheal porcine pancreatic elastase. Sci Rep 2023; 13:15259. [PMID: 37709810 PMCID: PMC10502133 DOI: 10.1038/s41598-023-41527-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 08/28/2023] [Indexed: 09/16/2023] Open
Abstract
Progressive emphysema often leads to end-stage lung disease. Most mouse models of emphysema are typically modest (i.e. cigarette smoke exposure), and changes over time are difficult to quantify. The tracheal porcine pancreatic elastase model (PPE) produces severe injury, but the literature is conflicted as to whether emphysema improves, is stable, or progresses over time. We hypothesized a threshold of injury below which repair would occur and above which emphysema would be stable or progress. We treated 8-week-old C57BL6 mixed sex mice with 0, 0.5, 2, or 4 activity units of PPE in 100 µL PBS and performed lung stereology at 21 and 84 days. There were no significant differences in weight gain or mouse health. Despite minimal emphysema at 21-days in the 0.5 units group (2.8 µm increased mean linear intercept, MLI), MLI increased by 4.6 µm between days 21 and 84 (p = 0.0007). In addition to larger MLI at 21 days in 2- and 4-unit groups, MLI increases from day 21 to 84 were 17.2 and 34 µm respectively (p = 0.002 and p = 0.0001). Total lung volume increased, and alveolar surface area decreased with time and injury severity. Contrary to our hypothesis, we found no evidence of alveolar repair over time. Airspace destruction was both progressive and accelerative. Future mechanistic studies in lung immunity, mechano-biology, senescence, and cell-specific changes may lead to novel therapies to slow or halt progressive emphysema in humans.
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Affiliation(s)
- Imani Joshi
- College of Arts and Sciences, Xavier University, Cincinnati, OH, USA
| | - Andrew J Devine
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Rashika Joshi
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Noah J Smith
- University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Brian M Varisco
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- University of Cincinnati College of Medicine, Cincinnati, OH, USA.
- University of Arkansas for Medical Sciences, 1 Children's Way Slot 663, Little Rock, AR, 72202, USA.
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Papazoglou AS, Karagiannidis E, Liatsos A, Bompoti A, Moysidis DV, Arvanitidis C, Tsolaki F, Tsagkaropoulos S, Theocharis S, Tagarakis G, Michaelson JS, Herrmann MD. Volumetric Tissue Imaging of Surgical Tissue Specimens Using Micro-Computed Tomography: An Emerging Digital Pathology Modality for Nondestructive, Slide-Free Microscopy-Clinical Applications of Digital Pathology in 3 Dimensions. Am J Clin Pathol 2023; 159:242-254. [PMID: 36478204 DOI: 10.1093/ajcp/aqac143] [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: 08/16/2022] [Accepted: 10/14/2022] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES Micro-computed tomography (micro-CT) is a novel, nondestructive, slide-free digital imaging modality that enables the acquisition of high-resolution, volumetric images of intact surgical tissue specimens. The aim of this systematic mapping review is to provide a comprehensive overview of the available literature on clinical applications of micro-CT tissue imaging and to assess its relevance and readiness for pathology practice. METHODS A computerized literature search was performed in the PubMed, Scopus, Web of Science, and CENTRAL databases. To gain insight into regulatory and financial considerations for performing and examining micro-CT imaging procedures in a clinical setting, additional searches were performed in medical device databases. RESULTS Our search identified 141 scientific articles published between 2000 and 2021 that described clinical applications of micro-CT tissue imaging. The number of relevant publications is progressively increasing, with the specialties of pulmonology, cardiology, otolaryngology, and oncology being most commonly concerned. The included studies were mostly performed in pathology departments. Current micro-CT devices have already been cleared for clinical use, and a Current Procedural Terminology (CPT) code exists for reimbursement of micro-CT imaging procedures. CONCLUSIONS Micro-CT tissue imaging enables accurate volumetric measurements and evaluations of entire surgical specimens at microscopic resolution across a wide range of clinical applications.
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Affiliation(s)
| | - Efstratios Karagiannidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Alexandros Liatsos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Andreana Bompoti
- Diagnostic Imaging, Peterborough City Hospital, North West Anglia NHS Foundation Trust, Peterborough, UK
| | - Dimitrios V Moysidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Christos Arvanitidis
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Heraklion, Crete, Greece.,LifeWatch ERIC, Sector II-II, Seville, Spain
| | - Fani Tsolaki
- Department of Cardiothoracic Surgery, AHEPA University Hospital, Thessaloniki, Greece
| | | | - Stamatios Theocharis
- First Department of Pathology, National and Kapoditrian University of Athens, Athens, Greece
| | - Georgios Tagarakis
- Department of Cardiothoracic Surgery, AHEPA University Hospital, Thessaloniki, Greece
| | - James S Michaelson
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Markus D Herrmann
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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Assavanopakun P, Sapbamrer R, Kumfu S, Chattipakorn N, Chattipakorn SC. Effects of air pollution on telomere length: Evidence from in vitro to clinical studies. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 312:120096. [PMID: 36067971 DOI: 10.1016/j.envpol.2022.120096] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/14/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
Air pollution remains the major environmental problem globally. There is extensive evidence showing that the variety of air pollutants from environmental and occupational exposures cause adverse effects to our health. The clinical symptoms of those effects may present at a late stage, so surveillance is difficult to manage. Several biomarkers have been used for the early detection of health issues following exposure to air pollution, including the use of telomere length which indicates cellular senescence in response to oxidative stress. Oxidative stress is one of the most plausible mechanisms associated with exposure to air pollutants. Some specific contexts including age groups, gender, ethnicity, occupations, and health conditions, showed significant alterations in telomere length after exposure to air pollutants. Several reports demonstrated both negative and positive associations between telomere length and air pollution, the studies using different concentrations and exposure times to air pollution on the study of telomere lengths. Surprisingly, some studies reported that low levels of exposure to air pollutants (lower than regulated levels) caused the alterations in telomere length. Those findings suggest that telomere length could be one of most practical biomarkers in air pollution surveillance. Therefore, this review aimed to summarize and discuss the relationship between telomere length and exposure to air pollution. The knowledge from this review will be beneficial for the planning of public health to reduce health problems in the general population, particularly in vulnerable people, who still live in areas with high air pollution.
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Affiliation(s)
- Pheerasak Assavanopakun
- Department of Community Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Ratana Sapbamrer
- Department of Community Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Sirinart Kumfu
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, 50200, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Nipon Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, 50200, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Siriporn C Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, 50200, Thailand; Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, 50200, Thailand.
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8
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Consequences of telomere dysfunction in fibroblasts, club and basal cells for lung fibrosis development. Nat Commun 2022; 13:5656. [PMID: 36202783 PMCID: PMC9537293 DOI: 10.1038/s41467-022-32771-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 08/16/2022] [Indexed: 11/08/2022] Open
Abstract
TRF1 is an essential component of the telomeric protective complex or shelterin. We previously showed that dysfunctional telomeres in alveolar type II (ATII) cells lead to interstitial lung fibrosis. Here, we study the lung pathologies upon telomere dysfunction in fibroblasts, club and basal cells. TRF1 deficiency in lung fibroblasts, club and basal cells induced telomeric damage, proliferative defects, cell cycle arrest and apoptosis. While Trf1 deletion in fibroblasts does not spontaneously lead to lung pathologies, upon bleomycin challenge exacerbates lung fibrosis. Unlike in females, Trf1 deletion in club and basal cells from male mice resulted in lung inflammation and airway remodeling. Here, we show that depletion of TRF1 in fibroblasts, Club and basal cells does not lead to interstitial lung fibrosis, underscoring ATII cells as the relevant cell type for the origin of interstitial fibrosis. Our findings contribute to a better understanding of proper telomere protection in lung tissue homeostasis.
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Suki B, Bates JHT, Bartolák-Suki E. Remodeling of the Aged and Emphysematous Lungs: Roles of Microenvironmental Cues. Compr Physiol 2022; 12:3559-3574. [PMID: 35766835 DOI: 10.1002/cphy.c210033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Aging is a slow process that affects all organs, and the lung is no exception. At the alveolar level, aging increases the airspace size with thicker and stiffer septal walls and straighter and thickened collagen and elastic fibers. This creates a microenvironment that interferes with the ability of cells in the parenchyma to maintain normal homeostasis and respond to injury. These changes also make the lung more susceptible to disease such as emphysema. Emphysema is characterized by slow but progressive remodeling of the deep alveolar regions that leads to airspace enlargement and increased but disorganized elastin and collagen deposition. This remodeling has been attributed to ongoing inflammation that involves inflammatory cells and the cytokines they produce. Cellular senescence, another consequence of aging, weakens the ability of cells to properly respond to injury, something that also occurs in emphysema. These factors conspire to make alveolar walls more prone to mechanical failure, which can set emphysema in motion by driving inflammation through immune stimulation by protein fragments. Both aging and emphysema are influenced by microenvironmental conditions such as local inflammation, chemical makeup, tissue stiffness, and mechanical stresses. Although aging and emphysema are not equivalent, they have the potential to influence each other in synergistic ways; aging sets up the conditions for emphysema to develop, while emphysema may accelerate cellular senescence and thus aging itself. This article focuses on the similarities and differences between the remodeled microenvironment of the aging and emphysematous lung, with special emphasis on the alveolar septal wall. © 2022 American Physiological Society. Compr Physiol 12:3559-3574, 2022.
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Affiliation(s)
- Béla Suki
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, USA
| | - Jason H T Bates
- Depatment of Medicine, University of Vermont Larner College of Medicine, Burlington, Vermont, USA
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10
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Shortened Telomere Length in Sputum Cells of Bronchiectasis Patients is Associated with Dysfunctional Inflammatory Pathways. Lung 2022; 200:401-407. [PMID: 35660961 DOI: 10.1007/s00408-022-00535-0] [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: 01/19/2022] [Accepted: 03/30/2022] [Indexed: 10/18/2022]
Abstract
Telomere attrition is an established ageing biomarker and shorter peripheral blood leukocyte telomere length has been associated with increased risks of respiratory diseases. However, whether telomere length in disease-relevant sputum immune cells of chronic respiratory disease patients is shortened and which pathways are dysfunctional are not clear. Here we measured telomere length from sputum samples of bronchiectasis and asthmatic subjects and determined that telomere length in sputum of bronchiectasis subjects was significantly shorter (Beta = - 1.167, PAdj = 2.75 × 10-4). We further performed global gene expression analysis and identified genes involved in processes such as NLRP3 inflammasome activation and regulation of adaptive immune cells when bronchiectasis sputum telomere length was shortened. Our study provides insights on dysfunctions related to shortened telomere length in sputum immune cells of bronchiectasis patients.
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11
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Fernandez RJ, Gardner ZJG, Slovik KJ, Liberti DC, Estep KN, Yang W, Chen Q, Santini GT, Perez JV, Root S, Bhatia R, Tobias JW, Babu A, Morley MP, Frank DB, Morrisey EE, Lengner CJ, Johnson FB. GSK3 inhibition rescues growth and telomere dysfunction in dyskeratosis congenita iPSC-derived type II alveolar epithelial cells. eLife 2022; 11:64430. [PMID: 35559731 PMCID: PMC9200405 DOI: 10.7554/elife.64430] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 05/11/2022] [Indexed: 11/27/2022] Open
Abstract
Dyskeratosis congenita (DC) is a rare genetic disorder characterized by deficiencies in telomere maintenance leading to very short telomeres and the premature onset of certain age-related diseases, including pulmonary fibrosis (PF). PF is thought to derive from epithelial failure, particularly that of type II alveolar epithelial (AT2) cells, which are highly dependent on Wnt signaling during development and adult regeneration. We use human induced pluripotent stem cell-derived AT2 (iAT2) cells to model how short telomeres affect AT2 cells. Cultured DC mutant iAT2 cells accumulate shortened, uncapped telomeres and manifest defects in the growth of alveolospheres, hallmarks of senescence, and apparent defects in Wnt signaling. The GSK3 inhibitor, CHIR99021, which mimics the output of canonical Wnt signaling, enhances telomerase activity and rescues the defects. These findings support further investigation of Wnt agonists as potential therapies for DC-related pathologies.
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Affiliation(s)
- Rafael Jesus Fernandez
- Medical Scientist Training Program, University of Pennsylvania, Philadelphia, United States
| | - Zachary J G Gardner
- Medical Scientist Training Program, University of Pennsylvania, Philadelphia, United States
| | - Katherine J Slovik
- Institute for Regenerative Medicine, University of Pennsylvania, Philadelphia, United States
| | - Derek C Liberti
- Cell and Molecular Biology Graduate Group, University of Pennsylvania, Philadelphia, United States
| | - Katrina N Estep
- Cell and Molecular Biology Graduate Group, University of Pennsylvania, Philadelphia, United States
| | - Wenli Yang
- Institute for Regenerative Medicine, University of Pennsylvania, Philadelphia, United States
| | - Qijun Chen
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, United States
| | - Garrett T Santini
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, United States
| | - Javier V Perez
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, United States
| | - Sarah Root
- College of Arts and Sciences and Vagelos Scholars Program, University of Pennsylvania, Philadelphia, United States
| | - Ranvir Bhatia
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, United States
| | - John W Tobias
- Penn Genomic Analysis Core, University of Pennsylvania, Philadelphia, United States
| | - Apoorva Babu
- Penn Cardiovascular Institute, University of Pennsylvania, Philadelphia, United States
| | - Michael P Morley
- Penn Cardiovascular Institute, University of Pennsylvania, Philadelphia, United States
| | - David B Frank
- Penn-CHOP Lung Biology Institute, Children's Hospital of Philadelphia, Philadelphia, United States
| | - Edward E Morrisey
- Institute for Regenerative Medicine, University of Pennsylvania, Philadelphia, United States
| | - Christopher J Lengner
- Department of Biomedical Sciences, University of Pennsylvania, Philadelphia, United States
| | - F Brad Johnson
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, United States
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12
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Fu J, Ji X, Liu J, Chen X, Shang H. Meta-analysis of the Connection Between Alzheimer Disease and Telomeres. Alzheimer Dis Assoc Disord 2022; 36:73-79. [PMID: 34654043 DOI: 10.1097/wad.0000000000000468] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 06/16/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND Alzheimer disease (AD) is the most common neurodegenerative disease of the central nervous system. The stability of the telomere-telomerase system is closely related to AD. A previous meta-analysis indicated that AD patients had shorter telomere length (TL) than control subjects. However, there are no consistent telomerase activity findings in AD patients, and the published telomerase studies were not meta-analyzed yet. METHODS We searched all the related studies that probed into TL and/or telomerase activity in AD patients based on PubMed and Embase database from the establishment to September 2020. The Chinese National Knowledge Infrastructure, Wanfang and China Science and Technology Journal Database were also utilized. The quality of the included studies was evaluated by using Newcastle-Ottawa Scale. All the statistical analyses of this meta-analysis were performed using Stata version 15.0. RESULTS Analyzing 30 TL data from 2248 AD patients and 4865 controls, AD patients had a significantly shorter TL than the controls, with a standardized mean difference of -0.70 (confidence interval: -0.95 to -0.46; P<0.05). The meta-analysis included 3 primary studies and did not find a significant difference in the telomerase activity between 233 AD patients and 132 controls, but AD patients had a trend of increased telomerase activity compared with controls (standardized mean difference: 0.47; confidence interval: -0.29 to 1.23; P>0.05). CONCLUSION Our results showed that compared with the control group, the AD group had a shorter TL and may have higher telomerase activity.
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Affiliation(s)
- Jiajia Fu
- Department of Neurology, West China Hospital, Sichuan University, Chengdu Sichuan
| | - Xiaoyu Ji
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jiao Liu
- Department of Neurology, West China Hospital, Sichuan University, Chengdu Sichuan
| | - Xueping Chen
- Department of Neurology, West China Hospital, Sichuan University, Chengdu Sichuan
| | - Huifang Shang
- Department of Neurology, West China Hospital, Sichuan University, Chengdu Sichuan
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13
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De Sadeleer LJ, McDonough JE, Schupp JC, Yan X, Vanstapel A, Van Herck A, Everaerts S, Geudens V, Sacreas A, Goos T, Aelbrecht C, Nawrot TS, Martens DS, Schols D, Claes S, Verschakelen JA, Verbeken EK, Ackermann M, Decottignies A, Mahieu M, Hackett TL, Hogg JC, Vanaudenaerde BM, Verleden SE, Kaminski N, Wuyts WA. Lung Microenvironments and Disease Progression in Fibrotic Hypersensitivity Pneumonitis. Am J Respir Crit Care Med 2022; 205:60-74. [PMID: 34724391 PMCID: PMC8865586 DOI: 10.1164/rccm.202103-0569oc] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Rationale: Fibrotic hypersensitivity pneumonitis (fHP) is an interstitial lung disease caused by sensitization to an inhaled allergen. Objectives: To identify the molecular determinants associated with progression of fibrosis. Methods: Nine fHP explant lungs and six unused donor lungs (as controls) were systematically sampled (4 samples/lung). According to microcomputed tomography measures, fHP cores were clustered into mild, moderate, and severe fibrosis groups. Gene expression profiles were assessed using weighted gene co-expression network analysis, xCell, gene ontology, and structure enrichment analysis. Gene expression of the prevailing molecular traits was also compared with idiopathic pulmonary fibrosis (IPF). The explant lung findings were evaluated in separate clinical fHP cohorts using tissue, BAL samples, and computed tomography scans. Measurements and Main Results: We found six molecular traits that associated with differential lung involvement. In fHP, extracellular matrix and antigen presentation/sensitization transcriptomic signatures characterized lung zones with only mild structural and histological changes, whereas signatures involved in honeycombing and B cells dominated the transcriptome in the most severely affected lung zones. With increasing disease severity, endothelial function was progressively lost, and progressive disruption in normal cellular homeostatic processes emerged. All six were also found in IPF, with largely similar associations with disease microenvironments. The molecular traits correlated with in vivo disease behavior in a separate clinical fHP cohort. Conclusions: We identified six molecular traits that characterize the morphological progression of fHP and associate with in vivo clinical behavior. Comparing IPF with fHP, the transcriptome landscape was determined considerably by local disease extent rather than by diagnosis alone.
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Affiliation(s)
- Laurens J. De Sadeleer
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism (CHROMETA),,Unit for Interstitial Lung Diseases, Department of Respiratory Diseases
| | - John E. McDonough
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism (CHROMETA),,Pulmonary, Critical Care, and Sleep Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Jonas C. Schupp
- Pulmonary, Critical Care, and Sleep Medicine, Yale University School of Medicine, New Haven, Connecticut;,Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
| | - Xiting Yan
- Pulmonary, Critical Care, and Sleep Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Arno Vanstapel
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism (CHROMETA),,Department of Histopathology, and
| | - Anke Van Herck
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism (CHROMETA)
| | - Stephanie Everaerts
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism (CHROMETA),,Unit for Interstitial Lung Diseases, Department of Respiratory Diseases
| | - Vincent Geudens
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism (CHROMETA)
| | - Annelore Sacreas
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism (CHROMETA)
| | - Tinne Goos
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism (CHROMETA),,Unit for Interstitial Lung Diseases, Department of Respiratory Diseases
| | - Celine Aelbrecht
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism (CHROMETA)
| | - Tim S. Nawrot
- Department of Public Health and Primary Care, and,Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Dries S. Martens
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Dominique Schols
- Department of Microbiology, Immunology, and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | - Sandra Claes
- Department of Microbiology, Immunology, and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium
| | | | | | - Maximilian Ackermann
- Institute of Functional and Clinical Anatomy, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany;,Institute of Pathology and Molecular Pathology, Helios University Clinic Wuppertal, University of Witten/Herdecke, Wuppertal, Germany
| | - Anabelle Decottignies
- Telomeres Research Group, Genetic and Epigenetic Alterations of Genomes, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Manon Mahieu
- Telomeres Research Group, Genetic and Epigenetic Alterations of Genomes, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Tillie-Louise Hackett
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, British Columbia, Canada; and
| | - James C. Hogg
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, British Columbia, Canada; and
| | - Bart M. Vanaudenaerde
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism (CHROMETA)
| | - Stijn E. Verleden
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism (CHROMETA),,Antwerp Surgical Training, Anatomy and Research Centre, Antwerp University, Antwerp, Belgium
| | - Naftali Kaminski
- Pulmonary, Critical Care, and Sleep Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Wim A. Wuyts
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism (CHROMETA),,Unit for Interstitial Lung Diseases, Department of Respiratory Diseases
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14
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Faniyi AA, Hughes MJ, Scott A, Belchamber KBR, Sapey E. Inflammation, Ageing and Diseases of the Lung: Potential therapeutic strategies from shared biological pathways. Br J Pharmacol 2021; 179:1790-1807. [PMID: 34826882 DOI: 10.1111/bph.15759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 10/07/2021] [Accepted: 11/08/2021] [Indexed: 12/15/2022] Open
Abstract
Lung diseases disproportionately affect elderly individuals. The lungs form a unique environment: a highly elastic organ with gaseous exchange requiring the closest proximity of inhaled air containing harmful agents and the circulating blood volume. The lungs are highly susceptible to senescence, with age and "inflammageing" creating a pro-inflammatory environment with a reduced capacity to deal with challenges. Whilst lung diseases may have disparate causes, the burden of ageing and inflammation provides a common process which can exacerbate seemingly unrelated pathologies. However, these shared pathways may also provide a common route to treatment, with increased interest in drugs which target ageing processes across respiratory diseases. In this review, we will examine the evidence for the increased burden of lung disease in older adults, the structural and functional changes seen with advancing age and assess what our expanding knowledge of inflammation and ageing pathways could mean for the treatment of lung disease.
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Affiliation(s)
- A A Faniyi
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, U.K
| | - M J Hughes
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, U.K
| | - A Scott
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, U.K
| | - K B R Belchamber
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, U.K
| | - E Sapey
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, U.K
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15
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Bompoti A, Papazoglou AS, Moysidis DV, Otountzidis N, Karagiannidis E, Stalikas N, Panteris E, Ganesh V, Sanctuary T, Arvanitidis C, Sianos G, Michaelson JS, Herrmann MD. Volumetric Imaging of Lung Tissue at Micrometer Resolution: Clinical Applications of Micro-CT for the Diagnosis of Pulmonary Diseases. Diagnostics (Basel) 2021; 11:diagnostics11112075. [PMID: 34829422 PMCID: PMC8625264 DOI: 10.3390/diagnostics11112075] [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: 09/17/2021] [Revised: 11/04/2021] [Accepted: 11/05/2021] [Indexed: 11/16/2022] Open
Abstract
Micro-computed tomography (micro-CT) is a promising novel medical imaging modality that allows for non-destructive volumetric imaging of surgical tissue specimens at high spatial resolution. The aim of this study is to provide a comprehensive assessment of the clinical applications of micro-CT for the tissue-based diagnosis of lung diseases. This scoping review was conducted in accordance with the PRISMA Extension for Scoping Reviews, aiming to include every clinical study reporting on micro-CT imaging of human lung tissues. A literature search yielded 570 candidate articles, out of which 37 were finally included in the review. Of the selected studies, 9 studies explored via micro-CT imaging the morphology and anatomy of normal human lung tissue; 21 studies investigated microanatomic pulmonary alterations due to obstructive or restrictive lung diseases, such as chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis, and cystic fibrosis; and 7 studies examined the utility of micro-CT imaging in assessing lung cancer lesions (n = 4) or in transplantation-related pulmonary alterations (n = 3). The selected studies reported that micro-CT could successfully detect several lung diseases providing three-dimensional images of greater detail and resolution than routine optical slide microscopy, and could additionally provide valuable volumetric insight in both restrictive and obstructive lung diseases. In conclusion, micro-CT-based volumetric measurements and qualitative evaluations of pulmonary tissue structures can be utilized for the clinical management of a variety of lung diseases. With micro-CT devices becoming more accessible, the technology has the potential to establish itself as a core diagnostic imaging modality in pathology and to enable integrated histopathologic and radiologic assessment of lung cancer and other lung diseases.
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Affiliation(s)
- Andreana Bompoti
- Department of Radiology, Peterborough City Hospital, Northwest Anglia NHS Foundation Trust, Peterborough PE3 9GZ, UK;
| | - Andreas S. Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (A.S.P.); (D.V.M.); (N.O.); (E.K.); (N.S.); (G.S.)
| | - Dimitrios V. Moysidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (A.S.P.); (D.V.M.); (N.O.); (E.K.); (N.S.); (G.S.)
| | - Nikolaos Otountzidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (A.S.P.); (D.V.M.); (N.O.); (E.K.); (N.S.); (G.S.)
| | - Efstratios Karagiannidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (A.S.P.); (D.V.M.); (N.O.); (E.K.); (N.S.); (G.S.)
| | - Nikolaos Stalikas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (A.S.P.); (D.V.M.); (N.O.); (E.K.); (N.S.); (G.S.)
| | - Eleftherios Panteris
- Biomic_AUTh, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center B1.4, 10th km Thessaloniki-Thermi Rd., P.O. Box 8318, GR 57001 Thessaloniki, Greece;
| | | | - Thomas Sanctuary
- Respiratory Department, Medway NHS Foundation Trust, Kent ME7 5NY, UK;
| | - Christos Arvanitidis
- Hellenic Centre for Marine Research (HCMR), Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), 70013 Heraklion, Greece;
- LifeWatch ERIC, Sector II-II, Plaza de España, 41071 Seville, Spain
| | - Georgios Sianos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (A.S.P.); (D.V.M.); (N.O.); (E.K.); (N.S.); (G.S.)
| | - James S. Michaelson
- Department of Pathology, Massachusetts General Hospital, Boston, MA 02114, USA;
| | - Markus D. Herrmann
- Department of Pathology, Massachusetts General Hospital, Boston, MA 02114, USA;
- Correspondence: ; Tel.: +6-17-724-1896
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16
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Zhang L, Liu M, Liu W, Hu C, Li H, Deng J, Cao Q, Wang Y, Hu W, Li Q. Th17/IL-17 induces endothelial cell senescence via activation of NF-κB/p53/Rb signaling pathway. J Transl Med 2021; 101:1418-1426. [PMID: 34172831 DOI: 10.1038/s41374-021-00629-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 05/29/2021] [Accepted: 06/14/2021] [Indexed: 12/19/2022] Open
Abstract
Cellular senescence is a key mechanism of age-related vascular endothelial dysfunction. Interleukin-17A (IL-17A) is an inflammatory cytokine produced by Th17 cells (a subgroup of helper T cells), which is a key factor in the development of atherosclerosis. However, the effect of IL-17A on the senescence of vascular endothelial cells is still unclear. In this study, we aimed to explore the role of IL-17A on endothelial cell senescence and its signaling pathways associated with senescence. The proportion of Th17 cells in the spleen and the expression levels of IL-17A, IL-6, and vascular cell adhesion molecule-1 (VCAM-1) in mice of different ages were increased with aging. In vitro experiments showed that proliferation was inhibited, senescent β-galactosidase and senescence-associated proteins (p16, p19, p21, and p53) of mouse aortic endothelial cells (MAECs) were increased with IL-17A treatment. Blocking the NF-κB pathway with ammonium pyrrolidinedithiocarbamate (PDTC) successfully inhibited IL-17A-induced expression of senescence-associated proteins. In conclusion, our data reveal a previously unsuspected link between IL-17A and endothelial cell senescence, which was mediated by the NF-κB /p53/Rb pathway.
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Affiliation(s)
- Liang Zhang
- Department of Clinical Laboratory, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, PR China
- Department of Clinical Laboratory, The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Science and Technology of China, Hefei, Anhui, PR China
| | - Manli Liu
- Department of Clinical Laboratory, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, PR China
- Department of Clinical Laboratory, The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Science and Technology of China, Hefei, Anhui, PR China
| | - Wenhua Liu
- Department of Neurology, Wuhan No.1 Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Chaojie Hu
- Department of Clinical Laboratory, The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Science and Technology of China, Hefei, Anhui, PR China
| | - Hongqi Li
- Geriatric Cardiology Department, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, PR China
| | - Jie Deng
- Department of Clinical Laboratory, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, PR China
- Department of Clinical Laboratory, The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Science and Technology of China, Hefei, Anhui, PR China
| | - Qi Cao
- The Centre for Transplantation and Renal Research, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW, Australia
| | - Yiping Wang
- The Centre for Transplantation and Renal Research, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW, Australia
| | - Wei Hu
- Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, PR China.
| | - Qing Li
- Department of Clinical Laboratory, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, PR China.
- Department of Clinical Laboratory, The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Science and Technology of China, Hefei, Anhui, PR China.
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17
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van Batenburg AA, Kazemier KM, van Oosterhout MFM, van der Vis JJ, Grutters JC, Goldschmeding R, van Moorsel CHM. Telomere shortening and DNA damage in culprit cells of different types of progressive fibrosing interstitial lung disease. ERJ Open Res 2021; 7:00691-2020. [PMID: 34084786 PMCID: PMC8165375 DOI: 10.1183/23120541.00691-2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 12/14/2020] [Indexed: 12/11/2022] Open
Abstract
Pulmonary fibrosis is strongly associated with telomere shortening and increased DNA damage. Key cells in the pathogenesis involve alveolar type 2 (AT2) cells, club cells and myofibroblasts; however, to what extent these cells are affected by telomere shortening and DNA damage is not yet known. We sought to determine the degree of, and correlation between, telomere shortening and DNA damage in different cell types involved in the pathogenesis of progressive fibrosing interstitial lung disease. Telomere length and DNA damage were quantified, using combined fluorescence in situ hybridisation and immunofluorescence staining techniques, in AT2 cells, club cells and myofibroblasts of controls and patients with pulmonary fibrosis and a telomerase reverse transcriptase mutation (TERT-PF), idiopathic pulmonary fibrosis (IPF) and fibrotic hypersensitivity pneumonitis (fHP). In IPF and TERT-PF lungs, AT2 cells contained shorter telomeres and expressed higher DNA damage signals than club cells and myofibroblasts. In fHP lungs, club cells contained highly elevated levels of DNA damage, while telomeres were not obviously short. In vitro, we found significantly shorter telomeres and higher DNA damage levels only in AT2 surrogate cell lines treated with telomerase inhibitor BIBR1532. Our study demonstrated that in IPF and TERT-PF lungs, telomere shortening and accumulation of DNA damage primarily affects AT2 cells, further supporting the importance of AT2 cells in these diseases, while in fHP the particularly high telomere-independent DNA damage signals in club cells underscores its bronchiolocentric pathogenesis. These findings suggest that cell type-specific telomere shortening and DNA damage may help to discriminate between different drivers of fibrogenesis.
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Affiliation(s)
- Aernoud A van Batenburg
- Dept of Pulmonology, St Antonius ILD Center of Excellence, St Antonius Hospital, Nieuwegein, The Netherlands
| | - Karin M Kazemier
- Center of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands.,Division of Heart and Lungs, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Matthijs F M van Oosterhout
- Dept of Pathology, Pathology DNA, St Antonius ILD Center of Excellence, St Antonius Hospital, Nieuwegein, The Netherlands
| | - Joanne J van der Vis
- Dept of Pulmonology, St Antonius ILD Center of Excellence, St Antonius Hospital, Nieuwegein, The Netherlands.,Dept of Clinical Chemistry, St Antonius ILD Center of Excellence, St Antonius Hospital, Nieuwegein, The Netherlands
| | - Jan C Grutters
- Dept of Pulmonology, St Antonius ILD Center of Excellence, St Antonius Hospital, Nieuwegein, The Netherlands.,Division of Heart and Lungs, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Roel Goldschmeding
- Dept of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Coline H M van Moorsel
- Dept of Pulmonology, St Antonius ILD Center of Excellence, St Antonius Hospital, Nieuwegein, The Netherlands.,Division of Heart and Lungs, University Medical Center Utrecht, Utrecht, The Netherlands
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18
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Mackintosh JA, Yerkovich ST, Tan ME, Samson L, Hopkins PMA, Chambers DC. Airway Telomere Length in Lung Transplant Recipients. Front Immunol 2021; 12:658062. [PMID: 33936089 PMCID: PMC8085488 DOI: 10.3389/fimmu.2021.658062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/30/2021] [Indexed: 11/13/2022] Open
Abstract
Introduction Chronic lung allograft dysfunction (CLAD) represents the major impediment to long term survival following lung transplantation. Donor and recipient telomere length have been shown to associate with lung transplant outcomes, including CLAD. In this study we aimed to measure the telomere lengths of bronchial and bronchiolar airway cells in lung allografts early after transplantation and to investigate associations with CLAD and all-cause mortality. Methods This prospective, longitudinal study was performed at The Prince Charles Hospital, Australia. Airway cells were collected via bronchial and bronchiolar airway brushings at post-transplant bronchoscopies. The relative telomere length in airway cells was determined by quantitative PCR based on the T/S ratio. All patients were censored for CLAD and all-cause mortality in August 2020. Results In total 231 bronchoscopies incorporating transbronchial brush and bronchial brush were performed in 120 patients. At the time of censoring, 43% and 35% of patients, respectively, had developed CLAD and had died. Airway bronchiolar and bronchial telomere lengths were strongly correlated (r=0.78, p<0.001), confirming conservation of telomere length with airway branch generation. Both the bronchiolar (r = -0.34, p<0.001) and bronchial (r = -0.31, p<0.001) telomere length decreased with age. Shorter airway telomere length was associated with older donor age and higher donor pack-year smoking history. Neither the bronchiolar nor the bronchial airway telomere length were associated with the development of CLAD (HR 0.39 (0.06-2.3), p=0.30; HR 0.66 (0.2-1.7), p=0.39, respectively) or all-cause mortality (HR 0.92 (0.2-4.5), p=0.92; HR 0.47 (0.1-1.9), p=0.28, respectively). Conclusions In this cohort, airway telomere length was associated with donor age and smoking history but was not associated with the future development of CLAD or all-cause mortality.
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Affiliation(s)
- John A. Mackintosh
- Queensland Lung Transplant Service, Department of Thoracic Medicine, The Prince Charles Hospital, Brisbane, QLD, Australia
| | - Stephanie T. Yerkovich
- Queensland Lung Transplant Service, Department of Thoracic Medicine, The Prince Charles Hospital, Brisbane, QLD, Australia
- Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia
| | - Maxine E. Tan
- Queensland Lung Transplant Service, Department of Thoracic Medicine, The Prince Charles Hospital, Brisbane, QLD, Australia
| | - Luke Samson
- Queensland Lung Transplant Service, Department of Thoracic Medicine, The Prince Charles Hospital, Brisbane, QLD, Australia
| | - Peter MA Hopkins
- Queensland Lung Transplant Service, Department of Thoracic Medicine, The Prince Charles Hospital, Brisbane, QLD, Australia
- Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia
| | - Daniel C. Chambers
- Queensland Lung Transplant Service, Department of Thoracic Medicine, The Prince Charles Hospital, Brisbane, QLD, Australia
- Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia
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19
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Schneider JL, Rowe JH, Garcia-de-Alba C, Kim CF, Sharpe AH, Haigis MC. The aging lung: Physiology, disease, and immunity. Cell 2021; 184:1990-2019. [PMID: 33811810 PMCID: PMC8052295 DOI: 10.1016/j.cell.2021.03.005] [Citation(s) in RCA: 163] [Impact Index Per Article: 54.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 02/01/2021] [Accepted: 03/02/2021] [Indexed: 02/07/2023]
Abstract
The population is aging at a rate never seen before in human history. As the number of elderly adults grows, it is imperative we expand our understanding of the underpinnings of aging biology. Human lungs are composed of a unique panoply of cell types that face ongoing chemical, mechanical, biological, immunological, and xenobiotic stress over a lifetime. Yet, we do not fully appreciate the mechanistic drivers of lung aging and why age increases the risk of parenchymal lung disease, fatal respiratory infection, and primary lung cancer. Here, we review the molecular and cellular aspects of lung aging, local stress response pathways, and how the aging process predisposes to the pathogenesis of pulmonary disease. We place these insights into context of the COVID-19 pandemic and discuss how innate and adaptive immunity within the lung is altered with age.
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Affiliation(s)
- Jaime L Schneider
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA; Dana Farber Cancer Institute, Boston, MA 02115, USA; Massachusetts General Hospital Cancer Center, Boston, MA 02114, USA
| | - Jared H Rowe
- Division of Hematology Boston Children's Hospital and Division of Pediatric Oncology Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Carolina Garcia-de-Alba
- Stem Cell Program and Divisions of Hematology/Oncology and Pulmonary Medicine, Boston Children's Hospital, Boston, MA 02115, USA
| | - Carla F Kim
- Stem Cell Program and Divisions of Hematology/Oncology and Pulmonary Medicine, Boston Children's Hospital, Boston, MA 02115, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA.
| | - Arlene H Sharpe
- Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA; Evergrande Center for Immunologic Disease, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA; Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115, USA.
| | - Marcia C Haigis
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA.
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20
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Künzi L, Easter M, Hirsch MJ, Krick S. Cystic Fibrosis Lung Disease in the Aging Population. Front Pharmacol 2021; 12:601438. [PMID: 33935699 PMCID: PMC8082404 DOI: 10.3389/fphar.2021.601438] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 03/15/2021] [Indexed: 01/02/2023] Open
Abstract
The demographics of the population with cystic fibrosis (CF) is continuously changing, with nowadays adults outnumbering children and a median predicted survival of over 40 years. This leads to the challenge of treating an aging CF population, while previous research has largely focused on pediatric and adolescent patients. Chronic inflammation is not only a hallmark of CF lung disease, but also of the aging process. However, very little is known about the effects of an accelerated aging pathology in CF lungs. Several chronic lung disease pathologies show signs of chronic inflammation with accelerated aging, also termed “inflammaging”; the most notable being chronic obstructive pulmonary disease (COPD) and idiopathic pulmonary fibrosis (IPF). In these disease entities, accelerated aging has been implicated in the pathogenesis via interference with tissue repair mechanisms, alterations of the immune system leading to impaired defense against pulmonary infections and induction of a chronic pro-inflammatory state. In addition, CF lungs have been shown to exhibit increased expression of senescence markers. Sustained airway inflammation also leads to the degradation and increased turnover of cystic fibrosis transmembrane regulator (CFTR). This further reduces CFTR function and may prevent the novel CFTR modulator therapies from developing their full efficacy. Therefore, novel therapies targeting aging processes in CF lungs could be promising. This review summarizes the current research on CF in an aging population focusing on accelerated aging in the context of chronic airway inflammation and therapy implications.
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Affiliation(s)
- Lisa Künzi
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL, United States.,Epidemiology, Biostatistics and Prevention Institute, Department of Public and Global Health, University of Zürich, Zürich, Switzerland
| | - Molly Easter
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Meghan June Hirsch
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Stefanie Krick
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL, United States.,Gregory Fleming Cystic Fibrosis Research Center, University of Alabama at Birmingham, Birmingham, AL, United States.,Comprehensive Center for Healthy Aging, University of Alabama at Birmingham, Birmingham, AL, United States
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21
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Duckworth A, Gibbons MA, Allen RJ, Almond H, Beaumont RN, Wood AR, Lunnon K, Lindsay MA, Wain LV, Tyrrell J, Scotton CJ. Telomere length and risk of idiopathic pulmonary fibrosis and chronic obstructive pulmonary disease: a mendelian randomisation study. THE LANCET. RESPIRATORY MEDICINE 2021; 9:285-294. [PMID: 33197388 DOI: 10.1016/s2213-2600(20)30364-7] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 07/03/2020] [Accepted: 07/27/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Idiopathic pulmonary fibrosis (IPF) is a fatal lung disease accounting for 1% of UK deaths. In the familial form of pulmonary fibrosis, causal genes have been identified in about 30% of cases, and a majority of these causal genes are associated with telomere maintenance. Prematurely shortened leukocyte telomere length is associated with IPF and chronic obstructive pulmonary disease (COPD), a disease with similar demographics and shared risk factors. Using mendelian randomisation, we investigated evidence supporting a causal role for short telomeres in IPF and COPD. METHODS Mendelian randomisation inference of telomere length causality was done for IPF (up to 1369 cases) and COPD (13 538 cases) against 435 866 controls of European ancestry in UK Biobank. Polygenic risk scores were calculated and two-sample mendelian randomisation analyses were done using seven genetic variants previously associated with telomere length, with replication analysis in an IPF cohort (2668 cases vs 8591 controls) and COPD cohort (15 256 cases vs 47 936 controls). FINDINGS In the UK Biobank, a genetically instrumented one-SD shorter telomere length was associated with higher odds of IPF (odds ratio [OR] 4·19, 95% CI 2·33-7·55; p=0·0031) but not COPD (1·07, 0·88-1·30; p=0·51). Similarly, an association was found in the IPF replication cohort (12·3, 5·05-30·1; p=0·0015) and not in the COPD replication cohort (1·04, 0·71-1·53; p=0·83). Meta-analysis of the two-sample mendelian randomisation results provided evidence inferring that shorter telomeres cause IPF (5·81 higher odds of IPF, 95% CI 3·56-9·50; p=2·19 × 10-12). There was no evidence to infer that telomere length caused COPD (OR 1·07, 95% CI 0·90-1·27; p=0·46). INTERPRETATION Cellular senescence is hypothesised as a major driving force in IPF and COPD; telomere shortening might be a contributory factor in IPF, suggesting divergent mechanisms in COPD. Defining a key role for telomere shortening enables greater focus in telomere-related diagnostics, treatments, and the search for a cure in IPF. Investigation of therapies that improve telomere length is warranted. FUNDING Medical Research Council.
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Affiliation(s)
- Anna Duckworth
- Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK; Exeter Patients in Collaboration for PF, Exeter, UK
| | - Michael A Gibbons
- Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK; Exeter Patients in Collaboration for PF, Exeter, UK; Respiratory Medicine Department, Royal Devon and Exeter NHS Foundation Trust, Exeter, UK
| | - Richard J Allen
- Department of Health Sciences, University of Leicester, Leicester, UK
| | | | - Robin N Beaumont
- Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK
| | - Andrew R Wood
- Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK
| | - Katie Lunnon
- Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK
| | - Mark A Lindsay
- Department of Pharmacy and Pharmacology, University of Bath, Bath, UK
| | - Louise V Wain
- Department of Health Sciences, University of Leicester, Leicester, UK; National Institute for Health Research, Leicester Respiratory Biomedical Research Centre, Glenfield Hospital, Leicester, UK
| | - Jess Tyrrell
- Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK
| | - Chris J Scotton
- Institute of Biomedical & Clinical Science, College of Medicine & Health, University of Exeter, Exeter, UK; Exeter Patients in Collaboration for PF, Exeter, UK.
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22
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Selman M, Pardo A. When things go wrong: exploring possible mechanisms driving the progressive fibrosis phenotype in interstitial lung diseases. Eur Respir J 2021; 58:13993003.04507-2020. [PMID: 33542060 DOI: 10.1183/13993003.04507-2020] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 01/27/2021] [Indexed: 02/06/2023]
Abstract
Interstitial lung diseases (ILDs) comprise a large and heterogeneous group of disorders of known and unknown aetiology characterised by diffuse damage of the lung parenchyma. In recent years it has become evident that patients with different types of ILD are at risk of developing progressive pulmonary fibrosis, known as progressive fibrosing ILD (PF-ILD). This is a phenotype that behaves similar to idiopathic pulmonary fibrosis, the archetypical example of progressive fibrosis. PF-ILD is not a distinct clinical entity but describes a group of ILDs with similar clinical behaviour. This phenotype may occur in diseases displaying distinct aetiologies and different biopathology during their initiation and development. Importantly, these entities may have the potential for improvement or stabilisation prior to entering the progressive fibrosing phase. The crucial questions are: 1) why does a subset of patients develop a progressive and irreversible fibrotic phenotype even with appropriate treatment? and 2) what are the possible pathogenic mechanisms driving progression? Here, we provide a framework highlighting putative mechanisms underlying progression, including genetic susceptibility, ageing, epigenetics, structural fibrotic distortion, aberrant composition and stiffness of the extracellular matrix, and the emergence of distinct pro-fibrotic cell subsets. Understanding the cellular and molecular mechanisms behind PF-ILD will provide the basis for identifying risk factors and appropriate therapeutic strategies.
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Affiliation(s)
- Moisés Selman
- Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Mexico City, Mexico
| | - Annie Pardo
- Facultad de Ciencias, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
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23
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Leukocyte Telomere Length Is Not Reduced in Children and Adults with Cystic Fibrosis but Associates with Clinical Characteristics-A Cross-Sectional Study. J Clin Med 2021; 10:jcm10040590. [PMID: 33557298 PMCID: PMC7915028 DOI: 10.3390/jcm10040590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/23/2021] [Accepted: 02/02/2021] [Indexed: 11/17/2022] Open
Abstract
We hypothezied that telomere length is considerably altered in cystic fibrosis (CF) patients compared to healthy subjects (HS), and that leukocyte telomere length variation reflects the severity of CF. Relative telomere length (RTL) was assessed by qPCR in 70 children aged 5-10 (34 CF; 36 HS) and 114 adults aged 18-45 (53 CF; 61 HS). Telomere length was similar in CF and HS (median (interquartile range): 0.799 (0.686-0.950) vs. 0.831 (0.707-0.986); p = 0.5283) both in children and adults. In adults, women had longer telomeres than men (0.805 (0.715-0.931) vs. 0.703 (0.574-0.790); p = 0.0002). Patients treated with inhaled corticosteroids had a shorter RTL compared to those without steroid therapy (0.765 (0.664-0.910) vs. 0.943 (0.813-1.191); p = 0.0007) and this finding remained significant after adjusting for gender, age, BMI, and child/adult status (p = 0.0003). Shorter telomeres were independently associated with the presence of comorbidities (0.763 (0.643-0.905) vs. 0.950 (0.783-1.130); p = 0.0006) and antibiotic treatment at the moment of blood sampling (0.762 (0.648-0.908) vs. 0.832 (0.748-1.129); p = 0.0172). RTL correlated with number of multiple-day hospitalizations (rho = -0.251; p = 0.0239), as well as number of hospitalization days (rho = -0.279; p = 0.0113). Leukocyte RTL in children and adults with CF was not shorter than in healthy controls, and did not seem to have any potential as a predictor of CF survival. However, it inversely associated with the investigated clinical characteristics.
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24
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Naikawadi RP, Green G, Jones KD, Achtar-Zadeh N, Mieleszko JE, Arnould I, Kukreja J, Greenland JR, Wolters PJ. Airway Epithelial Telomere Dysfunction Drives Remodeling Similar to Chronic Lung Allograft Dysfunction. Am J Respir Cell Mol Biol 2020; 63:490-501. [PMID: 32551854 DOI: 10.1165/rcmb.2019-0374oc] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Telomere dysfunction is associated with multiple fibrotic lung processes, including chronic lung allograft dysfunction (CLAD)-the major limitation to long-term survival following lung transplantation. Although shorter donor telomere lengths are associated with an increased risk of CLAD, it is unknown whether short telomeres are a cause or consequence of CLAD pathology. Our objective was to test whether telomere dysfunction contributes to the pathologic changes observed in CLAD. Histopathologic and molecular analysis of human CLAD lungs demonstrated shortened telomeres in lung epithelial cells quantified by teloFISH, increased numbers of surfactant protein C immunoreactive type II alveolar epithelial cells, and increased expression of senescence markers (β-galactosidase, p16, p53, and p21) in lung epithelial cells. TRF1F/F (telomere repeat binding factor 1 flox/flox) mice were crossed with tamoxifen-inducible SCGB1a1-cre mice to generate SCGB1a1-creTRF1F/F mice. Following 9 months of tamoxifen-induced deletion of TRF1 in club cells, mice developed mixed obstructive and restrictive lung physiology, small airway obliteration on microcomputed tomography, a fourfold decrease in telomere length in airway epithelial cells, collagen deposition around bronchioles and adjacent lung parenchyma, increased type II aveolar epithelial cell numbers, expression of senescence-associated β-galactosidase in epithelial cells, and decreased SCGB1a1 expression in airway epithelial cells. These findings demonstrate that telomere dysfunction isolated to airway epithelial cells leads to airway-centric lung remodeling and fibrosis similar to that observed in patients with CLAD and suggest that lung epithelial cell telomere dysfunction may be a molecular driver of CLAD.
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Affiliation(s)
- Ram P Naikawadi
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine
| | - Gary Green
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine
| | | | - Natalia Achtar-Zadeh
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine
| | - Julia E Mieleszko
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine
| | - Isabel Arnould
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine
| | - Jasleen Kukreja
- Department of Surgery, University of California, San Francisco, California; and
| | - John R Greenland
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine.,Medical Service, Veterans Affairs Health Care System, San Francisco, California
| | - Paul J Wolters
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine
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25
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Rozenberg D, Orsso CE, Chohan K, Orchanian‐Cheff A, Nourouzpour S, Nicholson JM, Elangeswaran B, Vagaon A, Fidler L, Singer LG, Mathur S. Clinical outcomes associated with computed tomography‐based body composition measures in lung transplantation: a systematic review. Transpl Int 2020; 33:1610-1625. [DOI: 10.1111/tri.13749] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/24/2020] [Accepted: 09/13/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Dmitry Rozenberg
- Department of Medicine University of Toronto Toronto ON Canada
- Lung Transplant Program Respirology Toronto General Hospital Research InstituteUniversity Health Network Toronto ON Canada
| | - Camila E. Orsso
- Department of Agricultural, Food and Nutritional Science University of Alberta Edmonton AB Canada
| | - Karan Chohan
- Department of Medicine University of Toronto Toronto ON Canada
| | - Ani Orchanian‐Cheff
- Library and Information Services University Health Network Toronto ON Canada
| | - Sahar Nourouzpour
- Lung Transplant Program Respirology Toronto General Hospital Research InstituteUniversity Health Network Toronto ON Canada
| | | | - Brenawen Elangeswaran
- Lung Transplant Program Respirology Toronto General Hospital Research InstituteUniversity Health Network Toronto ON Canada
| | - Andrei Vagaon
- Department of Medicine University of Toronto Toronto ON Canada
| | - Lee Fidler
- Department of Medicine University of Toronto Toronto ON Canada
- Respirology Sunnybrook Health Sciences Centre Toronto ON Canada
| | - Lianne G. Singer
- Department of Medicine University of Toronto Toronto ON Canada
- Lung Transplant Program Respirology Toronto General Hospital Research InstituteUniversity Health Network Toronto ON Canada
| | - Sunita Mathur
- Department of Physical Therapy University of Toronto Toronto ON Canada
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26
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Abstract
Frailty is a clinical state of vulnerability to stressors resulting from cumulative alterations in multiple physiological and molecular systems. Frailty assessment in patients with chronic disease is useful for identifying those who are at increased risk for poor clinical and patient reported outcomes. Due to biobehavioral changes purported to cause both frailty and certain chronic lung diseases, patients with lung disease appear susceptible to frailty and prone to developing it decades earlier than community dwelling healthy populations. Herein, we review the literature and potential pathobiological mechanisms underpinning associations between frailty in lung disease and age, sex, comorbidity and symptom burden, severity of lung disease, inflammatory biomarkers, various clinical parameters, body composition measures, and physical activity levels. We also propose a multipronged program of future research focused on improving the accuracy and precision of frailty measurement in lung disease, identifying blood-based biomarkers and measures of body composition for frailty, determining whether subphenotypes of frailty with distinct pathobiology exist, and developing personalized interventions that target the specific underlying mechanisms causing frailty.
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27
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Sameri S, Samadi P, Dehghan R, Salem E, Fayazi N, Amini R. Stem Cell Aging in Lifespan and Disease: A State-of-the-Art Review. Curr Stem Cell Res Ther 2020; 15:362-378. [DOI: 10.2174/1574888x15666200213105155] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 11/09/2019] [Accepted: 12/31/2019] [Indexed: 12/11/2022]
Abstract
Aging is considered as inevitable changes at different levels of genome, cell, and organism.
From the accumulation of DNA damages to imperfect protein homeostasis, altered cellular communication
and exhaustion of stem cells, aging is a major risk factor for many prevalent diseases, such as
cancer, cardiovascular disease, pulmonary disease, diabetes, and neurological disorders. The cells are
dynamic systems, which, through a cycle of processes such as replication, growth, and death, could
replenish the bodies’ organs and tissues, keeping an entire organism in optimal working order. In many
different tissues, adult stem cells are behind these processes, replenishing dying cells to maintain normal
tissue function and regenerating injured tissues. Therefore, adult stem cells play a vital role in preventing
the aging of organs and tissues, and can delay aging. However, during aging, these cells also
undergo some detrimental changes such as alterations in the microenvironment, a decline in the regenerative
capacity, and loss of function. This review aimed to discuss age-related changes of stem cells in
different tissues and cells, including skin, muscles, brain, heart, hair follicles, liver, and lung.
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Affiliation(s)
- Saba Sameri
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Pouria Samadi
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Razieh Dehghan
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Elham Salem
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Nashmin Fayazi
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Razieh Amini
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
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28
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De Sadeleer LJ, Goos T, Yserbyt J, Wuyts WA. Towards the Essence of Progressiveness: Bringing Progressive Fibrosing Interstitial Lung Disease (PF-ILD) to the Next Stage. J Clin Med 2020; 9:E1722. [PMID: 32503224 PMCID: PMC7355916 DOI: 10.3390/jcm9061722] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 05/27/2020] [Accepted: 05/28/2020] [Indexed: 12/19/2022] Open
Abstract
Although only recently introduced in the ILD community, the concept of progressive fibrosing interstitial lung disease (PF-ILD) has rapidly acquired an important place in the management of non-idiopathic pulmonary fibrosis fibrosing ILD (nonIPF fILD) patients. It confirms a clinical gut feeling that an important subgroup of nonIPF fILD portends a dismal prognosis despite therapeutically addressing the alleged triggering event. Due to several recently published landmark papers showing a treatment benefit with currently available antifibrotic drugs in PF-ILD patients, endorsing a PF-ILD phenotype has vital therapeutic consequences. Importantly, defining progressiveness is based on former progression, which has proven to be a rather moderate predictor of future progression. As fibrosis extent >20% and the presence of honeycombing have superior predictive properties regarding future progression, we advocate immediate initiation of antifibrotic treatment in the presence of these risk factors. In this perspective, we describe the historical context wherein PF-ILD has emerged, determine the currently employed PF-ILD criteria and their inherent limitations and propose new directions to mature its definition. Finally, while ascertaining progression in a nonIPF fILD patient clearly demonstrates the need for (additional) therapy, in the future, therapeutic decisions should be taken after assessing which pathway is ultimately driving the progression. Although not readily available, pathophysiological insight and diagnostic means are emergent to go full steam ahead in this novel direction.
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Affiliation(s)
- Laurens J. De Sadeleer
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department CHROMETA, KU Leuven, B-3000 Leuven, Belgium; (L.J.D.S.); (T.G.); (J.Y.)
- Unit of Interstitial Lung Diseases, Department of Respiratory Diseases, University Hospitals Leuven, B-3000 Leuven, Belgium
| | - Tinne Goos
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department CHROMETA, KU Leuven, B-3000 Leuven, Belgium; (L.J.D.S.); (T.G.); (J.Y.)
- Unit of Interstitial Lung Diseases, Department of Respiratory Diseases, University Hospitals Leuven, B-3000 Leuven, Belgium
| | - Jonas Yserbyt
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department CHROMETA, KU Leuven, B-3000 Leuven, Belgium; (L.J.D.S.); (T.G.); (J.Y.)
| | - Wim A. Wuyts
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department CHROMETA, KU Leuven, B-3000 Leuven, Belgium; (L.J.D.S.); (T.G.); (J.Y.)
- Unit of Interstitial Lung Diseases, Department of Respiratory Diseases, University Hospitals Leuven, B-3000 Leuven, Belgium
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Abstract
PURPOSE OF REVIEW Chronic lung allograft dysfunction (CLAD) has been recently introduced as an umbrella-term encompassing all forms of chronic pulmonary function decline posttransplant with bronchiolitis obliterans syndrome and restrictive allograft syndrome as the most important subtypes. Differential diagnosis and management, however, remains complicated. RECENT FINDINGS Herein, we provide an overview of the different diagnostic criteria (pulmonary function, body plethysmography and radiology) used to differentiate bronchiolitis obliterans syndrome and restrictive allograft syndrome, their advantages and disadvantages as well as potential problems in making an accurate differential diagnosis. Furthermore, we discuss recent insights in CLAD management and treatment and advances in the search for accurate biomarkers of CLAD. SUMMARY Careful dissection of CLAD phenotypes is of utmost importance to assess patient prognosis, but uniform diagnostic criteria are desperately needed. There is a long way ahead, but the first steps towards this goal are now taken; tailored individualized therapy will be the golden standard to treat CLAD in the future, but randomized placebo-controlled and multicentre trials are needed to identify new and powerful therapeutic agents.
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30
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Hughes MJ, McGettrick HM, Sapey E. Shared mechanisms of multimorbidity in COPD, atherosclerosis and type-2 diabetes: the neutrophil as a potential inflammatory target. Eur Respir Rev 2020; 29:190102. [PMID: 32198215 PMCID: PMC9488696 DOI: 10.1183/16000617.0102-2019] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 11/02/2019] [Indexed: 12/17/2022] Open
Abstract
Multimorbidity is increasingly common and current healthcare strategies are not always aligned to treat this complex burden of disease. COPD, type-2 diabetes mellitus (T2D) and cardiovascular disease, especially atherosclerosis, occur more frequently together than expected, even when risk factors such as smoking, obesity, inactivity and poverty are considered. This supports the possibility of unifying mechanisms that contribute to the pathogenesis or progression of each condition.Neutrophilic inflammation is causally associated with COPD, and increasingly recognised in the pathogenesis of atherosclerosis and T2D, potentially forming an aetiological link between conditions. This link might reflect an overspill of inflammation from one affected organ into the systemic circulation, exposing all organs to an increased milieu of proinflammatory cytokines. Additionally, increasing evidence supports the involvement of other processes in chronic disease pathogenesis, such as cellular senescence or changes in cellular phenotypes.This review explores the current scientific evidence for inflammation, cellular ageing and cellular processes, such as reactive oxygen species production and phenotypic changes in the pathogenesis of COPD, T2D and atherosclerosis; highlighting common mechanisms shared across these diseases. We identify emerging therapeutic approaches that target these areas, but also where more work is still required to improve our understanding of the underlying cellular biology in a multimorbid disease setting.
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Affiliation(s)
- Michael J Hughes
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Helen M McGettrick
- Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Elizabeth Sapey
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
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31
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van Batenburg AA, Kazemier KM, van Oosterhout MFM, van der Vis JJ, van Es HW, Grutters JC, Goldschmeding R, van Moorsel CHM. From organ to cell: Multi-level telomere length assessment in patients with idiopathic pulmonary fibrosis. PLoS One 2020; 15:e0226785. [PMID: 31910222 PMCID: PMC6946122 DOI: 10.1371/journal.pone.0226785] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 12/03/2019] [Indexed: 12/15/2022] Open
Abstract
Rationale A subset of patients with idiopathic pulmonary fibrosis (IPF) contains short leukocyte telomeres or telomere related mutations. We previously showed that alveolar type 2 cells have short telomeres in fibrotic lesions. Our objectives were to better understand how telomere shortening associates with fibrosis in IPF lung and identify a subset of patients with telomere-related disease. Methods Average telomere length was determined in multiple organs, basal and apical lung, and diagnostic and end-stage fibrotic lung biopsies. Alveolar type 2 cells telomere length was determined in different areas of IPF lungs. Results In IPF but not in controls, telomere length in lung was shorter than in other organs, providing rationale to focus on telomere length in lung. Telomere length did not correlate with age and no difference in telomere length was found between diagnostic and explant lung or between basal and apical lung, irrespective of the presence of a radiological apicobasal gradient or fibrosis. Fifteen out of 28 IPF patients had average lung telomere length in the range of patients with a telomerase (TERT) mutation, and formed the IPFshort group. Only in this IPFshort and TERT group telomeres of alveolar type 2 cells were extremely short in fibrotic areas. Additionally, whole exome sequencing of IPF patients revealed two genetic variations in RTEL1 and one in PARN in the IPFshort group. Conclusions Average lung tissue telomere shortening does not associated with fibrotic patterns in IPF, however, approximately half of IPF patients show excessive lung telomere shortening that is associated with pulmonary fibrosis driven by telomere attrition.
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Affiliation(s)
- Aernoud A. van Batenburg
- Department of Pulmonology, St Antonius ILD Center of Excellence, St Antonius Hospital, Nieuwegein, the Netherlands
| | - Karin M. Kazemier
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
- Department of Respiratory Medicine, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Matthijs F. M. van Oosterhout
- Pathology–DNA, Department of Pathology, St Antonius ILD Center of Excellence St Antonius Hospital, Nieuwegein, The Netherlands
| | - Joanne J. van der Vis
- Department of Pulmonology, St Antonius ILD Center of Excellence, St Antonius Hospital, Nieuwegein, the Netherlands
- Department of Clinical Chemistry, St Antonius ILD Center of Excellence, St Antonius Hospital, Nieuwegein, the Netherlands
| | - Hendrik W. van Es
- Department of Radiology, St Antonius ILD Center of Excellence, St Antonius Hospital, Nieuwegein, the Netherlands
| | - Jan C. Grutters
- Department of Pulmonology, St Antonius ILD Center of Excellence, St Antonius Hospital, Nieuwegein, the Netherlands
- Division of Heart and Lungs, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Roel Goldschmeding
- Department of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Coline H. M. van Moorsel
- Department of Pulmonology, St Antonius ILD Center of Excellence, St Antonius Hospital, Nieuwegein, the Netherlands
- Division of Heart and Lungs, University Medical Center Utrecht, Utrecht, the Netherlands
- * E-mail:
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32
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Zuo L, Prather ER, Stetskiv M, Garrison DE, Meade JR, Peace TI, Zhou T. Inflammaging and Oxidative Stress in Human Diseases: From Molecular Mechanisms to Novel Treatments. Int J Mol Sci 2019; 20:E4472. [PMID: 31510091 PMCID: PMC6769561 DOI: 10.3390/ijms20184472] [Citation(s) in RCA: 239] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 09/04/2019] [Indexed: 02/06/2023] Open
Abstract
It has been proposed that a chronic state of inflammation correlated with aging known as inflammaging, is implicated in multiple disease states commonly observed in the elderly population. Inflammaging is associated with over-abundance of reactive oxygen species in the cell, which can lead to oxidation and damage of cellular components, increased inflammation, and activation of cell death pathways. This review focuses on inflammaging and its contribution to various age-related diseases such as cardiovascular disease, cancer, neurodegenerative diseases, chronic obstructive pulmonary disease, diabetes, and rheumatoid arthritis. Recently published mechanistic details of the roles of reactive oxygen species in inflammaging and various diseases will also be discussed. Advancements in potential treatments to ameliorate inflammaging, oxidative stress, and consequently, reduce the morbidity of multiple disease states will be explored.
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Affiliation(s)
- Li Zuo
- College of Arts and Sciences, University of Maine Presque Isle Campus, Presque Isle, ME 04769, USA.
- Radiologic Sciences and Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, Columbus, OH 43210, USA.
- Interdisciplinary Biophysics Graduate Program, The Ohio State University, Columbus, OH 43210, USA.
| | - Evan R Prather
- Radiologic Sciences and Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, Columbus, OH 43210, USA
| | - Mykola Stetskiv
- Radiologic Sciences and Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, Columbus, OH 43210, USA
| | - Davis E Garrison
- Radiologic Sciences and Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, Columbus, OH 43210, USA
| | - James R Meade
- Radiologic Sciences and Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, Columbus, OH 43210, USA
| | - Timotheus I Peace
- College of Arts and Sciences, University of Maine Presque Isle Campus, Presque Isle, ME 04769, USA
| | - Tingyang Zhou
- Radiologic Sciences and Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, Columbus, OH 43210, USA
- Interdisciplinary Biophysics Graduate Program, The Ohio State University, Columbus, OH 43210, USA
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Schiller HB, Montoro DT, Simon LM, Rawlins EL, Meyer KB, Strunz M, Vieira Braga FA, Timens W, Koppelman GH, Budinger GRS, Burgess JK, Waghray A, van den Berge M, Theis FJ, Regev A, Kaminski N, Rajagopal J, Teichmann SA, Misharin AV, Nawijn MC. The Human Lung Cell Atlas: A High-Resolution Reference Map of the Human Lung in Health and Disease. Am J Respir Cell Mol Biol 2019; 61:31-41. [PMID: 30995076 PMCID: PMC6604220 DOI: 10.1165/rcmb.2018-0416tr] [Citation(s) in RCA: 128] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/17/2019] [Indexed: 12/13/2022] Open
Abstract
Lung disease accounts for every sixth death globally. Profiling the molecular state of all lung cell types in health and disease is currently revolutionizing the identification of disease mechanisms and will aid the design of novel diagnostic and personalized therapeutic regimens. Recent progress in high-throughput techniques for single-cell genomic and transcriptomic analyses has opened up new possibilities to study individual cells within a tissue, classify these into cell types, and characterize variations in their molecular profiles as a function of genetics, environment, cell-cell interactions, developmental processes, aging, or disease. Integration of these cell state definitions with spatial information allows the in-depth molecular description of cellular neighborhoods and tissue microenvironments, including the tissue resident structural and immune cells, the tissue matrix, and the microbiome. The Human Cell Atlas consortium aims to characterize all cells in the healthy human body and has prioritized lung tissue as one of the flagship projects. Here, we present the rationale, the approach, and the expected impact of a Human Lung Cell Atlas.
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Affiliation(s)
- Herbert B. Schiller
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Group Systems Medicine of Chronic Lung Disease, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Daniel T. Montoro
- Harvard Stem Cell Institute, Cambridge, Massachusetts
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - Lukas M. Simon
- Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Computational Biology, Neuherberg, Germany
| | - Emma L. Rawlins
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, United Kingdom
| | | | - Maximilian Strunz
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Group Systems Medicine of Chronic Lung Disease, Member of the German Center for Lung Research (DZL), Munich, Germany
| | | | - Wim Timens
- Department of Pathology and Medical Biology
- Groningen Research Institute for Asthma and COPD at the University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Gerard H. Koppelman
- Department of Pediatric Pulmonology and Pediatric Allergology, Beatrix Children’s Hospital, and
- Groningen Research Institute for Asthma and COPD at the University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - G. R. Scott Budinger
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois
| | - Janette K. Burgess
- Department of Pathology and Medical Biology
- Groningen Research Institute for Asthma and COPD at the University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Avinash Waghray
- Harvard Stem Cell Institute, Cambridge, Massachusetts
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - Maarten van den Berge
- Department of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
- Groningen Research Institute for Asthma and COPD at the University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Fabian J. Theis
- Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Computational Biology, Neuherberg, Germany
- Department of Mathematics, Technische Universität München, Munich, Germany
| | - Aviv Regev
- Klarman Cell Observatory, Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts
- Department of Biology, Howard Hughes Medical Institute and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts; and
| | - Naftali Kaminski
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, Connecticut
| | - Jayaraj Rajagopal
- Harvard Stem Cell Institute, Cambridge, Massachusetts
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | | | - Alexander V. Misharin
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois
| | - Martijn C. Nawijn
- Department of Pathology and Medical Biology
- Groningen Research Institute for Asthma and COPD at the University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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Courtwright AM, El-Chemaly S. Telomeres in Interstitial Lung Disease: The Short and the Long of It. Ann Am Thorac Soc 2019; 16:175-181. [PMID: 30540921 PMCID: PMC6376948 DOI: 10.1513/annalsats.201808-508cme] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 09/25/2018] [Indexed: 01/01/2023] Open
Abstract
Telomeres are repetitive nucleotide sequences that cap linear chromosomes, thereby limiting progressive chromosomal shortening during cell replication. In conjunction with environmental factors, common single-nucleotide polymorphisms and rare and ultra-rare telomere-related mutations are associated with accelerated telomere shortening resulting in organ dysfunction, including interstitial lung disease (ILD). The most common telomere-related mutation-associated ILD is idiopathic pulmonary fibrosis (IPF). Up to one-third of individuals with familial IPF have shortened telomeres and/or carry a telomere-related mutation, and 1 in 10 individuals with sporadic IPF have telomere-related mutations. Regardless of ILD phenotype, individuals with short telomeres and/or known telomere-related mutations have more rapid disease progression and shorter lung transplant-free survival. Management should include initiation of antifibrotic agents for those with an IPF phenotype and early referral to a transplant center. Patients with ILD being considered for transplant should be screened for short telomeres if there is a significant family history of pulmonary fibrosis or evidence of extrapulmonary organ dysfunction associated with a short telomere syndrome. Post-transplant management of recipients with telomere-related mutations should include careful adjustment of immunosuppression regimens on the basis of bone marrow reserve. Data on the impact of shortened telomeres on post-transplant outcomes, however, remain mixed.
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Affiliation(s)
- Andrew M. Courtwright
- Division of Pulmonary and Critical Care Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania; and
| | - Souheil El-Chemaly
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
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Burgess JK, Heijink IH. Chronic Lung Pathologies That Require Repair and Regeneration. STEM CELL-BASED THERAPY FOR LUNG DISEASE 2019. [PMCID: PMC7122311 DOI: 10.1007/978-3-030-29403-8_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Chronic lung diseases, such as chronic obstructive pulmonary disease (COPD) and pulmonary fibrosis, are a major cause of mortality worldwide. With the increasing incidence with ageing, the full impact of these diseases is yet to be realised. For most chronic lung diseases there are limited treatments options, with the existing approaches mainly addressing symptom relief. Little progress has been made, in recent years, in the development of new therapeutic strategies for managing these burdensome pathologies. There is an urgent need to increase our understanding of the mechanisms underlying these diseases. Endogenous progenitor cells (stem cells) have been recognised in many organs, including the lungs where they are suggested to maintain a population of cells that are able to facilitate the endogenous repair processes. Emerging knowledge of how these repair processes are disrupted in chronic lung diseases and the potential to capitalise upon the regenerative capacity of stem cell populations raise the hopes of the field worldwide for innovative treatment approaches for these devastating diseases in the future. This chapter outlines the series of diseases that may benefit from these emerging new therapeutic outlooks.
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Affiliation(s)
- Janette K. Burgess
- The University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands
| | - Irene H. Heijink
- The University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands
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Møller P, Wils RS, Jensen DM, Andersen MHG, Roursgaard M. Telomere dynamics and cellular senescence: an emerging field in environmental and occupational toxicology. Crit Rev Toxicol 2018; 48:761-788. [DOI: 10.1080/10408444.2018.1538201] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
| | - Regitze Sølling Wils
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
| | - Ditte Marie Jensen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
| | | | - Martin Roursgaard
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
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