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Shen HC, Lee WJ, Sun CY, Yu WK, Chen WC, Hsiao FY, Yang KY, Chen LK. Follistatin-respiratory connection predicting all-cause mortality among community-dwelling middle-to-old age individuals: Results from the I-Lan Longitudinal Study. J Nutr Health Aging 2024; 28:100285. [PMID: 38861881 DOI: 10.1016/j.jnha.2024.100285] [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: 04/28/2024] [Revised: 05/30/2024] [Accepted: 05/30/2024] [Indexed: 06/13/2024]
Abstract
OBJECTIVES The link between aging and pulmonary function decline is well-established, but the underlying mechanisms have yet to be fully revealed. Serum follistatin, a myokine implicated in muscle degeneration, may play a role in age-related pulmonary changes. This study aims to investigate the relationship between serum follistatin levels and pulmonary function decline in community-dwelling older adults, and evaluate their combined association with all-cause mortality. RESEARCH DESIGN AND METHODS This longitudinal cohort study utilized data from 751 participants aged ≥50 years in the I-Lan Longitudinal Aging Study between 2018-2019. Serum follistatin levels, spirometry results, demographic and clinical data were retrieved. Participants were stratified based on their follistatin levels. Survival curves and group comparisons based on follistatin levels and decline in peak expiratory flow (PEF) using Kaplan-Meier analysis and log-rank tests. Multivariate Cox proportional hazards models were further used to identify independent predictors of all-cause mortality during the 52-month follow-up. RESULTS Elevated follistatin levels significantly correlated with worse pulmonary function, particularly decreased PEF (p = 0.030). Kaplan-Meier analysis revealed the combination of elevated follistatin levels and decreased PEF was associated with increased risk of all-cause mortality (Log-rank p = 0.023). Cox proportional hazards models further identified that concurrent presence of higher follistatin levels and decreased PEF predicted higher risk of all-cause mortality (adjusted HR 3.58, 95% CI: 1.22-10.53, p = 0.020). CONCLUSION Higher serum follistatin levels correlate with decreased pulmonary function, specifically PEF decline, in community-dwelling older adults. Furthermore, the coexistence of elevated follistatin levels and decreased PEF was associated with risk of all-cause mortality. Follistatin may serve as a biomarker for pulmonary aging and related adverse outcomes.
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Affiliation(s)
- Hsiao-Chin Shen
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Division of Evidence-based Medicine, Department of Medical Education, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Wei-Ju Lee
- Center for Healthy Longevity and Aging Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Family Medicine, Taipei Veterans General Hospital Yuanshan Branch, Yilan, Taiwan
| | - Chuan-Yen Sun
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Wen-Kuang Yu
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Wei-Chih Chen
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Fei-Yuan Hsiao
- Graduate Institute of Clinical Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan; School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Pharmacy, National Taiwan University Hospital, Taipei, Taiwan
| | - Kuang-Yao Yang
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Institute of Emergency and Critical Care Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Cancer and Immunology Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan.
| | - Liang-Kung Chen
- Center for Healthy Longevity and Aging Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan; Center for Geriatrics and Gerontology, Taipei Veterans General Hospital, Taipei, Taiwan; Taipei Municipal Gan-Dau Hospital (Managed by Taipei Veterans General Hospital), Taipei, Taiwan
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Nieuwenhuizen NE, Nouailles G, Sutherland JS, Zyla J, Pasternack AH, Heyckendorf J, Frye BC, Höhne K, Zedler U, Bandermann S, Abu Abed U, Brinkmann V, Gutbier B, Witzenrath M, Suttorp N, Zissel G, Lange C, Ritvos O, Kaufmann SHE. Activin A levels are raised during human tuberculosis and blockade of the activin signaling axis influences murine responses to M. tuberculosis infection. mBio 2024; 15:e0340823. [PMID: 38376260 PMCID: PMC10936190 DOI: 10.1128/mbio.03408-23] [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: 01/17/2024] [Accepted: 01/26/2024] [Indexed: 02/21/2024] Open
Abstract
Activin A strongly influences immune responses; yet, few studies have examined its role in infectious diseases. We measured serum activin A levels in two independent tuberculosis (TB) patient cohorts and in patients with pneumonia and sarcoidosis. Serum activin A levels were increased in TB patients compared to healthy controls, including those with positive tuberculin skin tests, and paralleled severity of disease, assessed by X-ray scores. In pneumonia patients, serum activin A levels were also raised, but in sarcoidosis patients, levels were lower. To determine whether blockade of the activin A signaling axis could play a functional role in TB, we harnessed a soluble activin type IIB receptor fused to human IgG1 Fc, ActRIIB-Fc, as a ligand trap in a murine TB model. The administration of ActRIIB-Fc to Mycobacterium tuberculosis-infected mice resulted in decreased bacterial loads and increased numbers of CD4 effector T cells and tissue-resident memory T cells in the lung. Increased frequencies of tissue-resident memory T cells corresponded with downregulated T-bet expression in lung CD4 and CD8 T cells. Altogether, the results suggest a disease-exacerbating role of ActRIIB signaling pathways. Serum activin A may be useful as a biomarker for diagnostic triage of active TB or monitoring of anti-tuberculosis therapy. IMPORTANCE Tuberculosis remains the leading cause of death by a bacterial pathogen. The etiologic agent of tuberculosis, Mycobacterium tuberculosis, can remain dormant in the infected host for years before causing disease. Significant effort has been made to identify biomarkers that can discriminate between latently infected and actively diseased individuals. We found that serum levels of the cytokine activin A were associated with increased lung pathology and could discriminate between active tuberculosis and tuberculin skin-test-positive healthy controls. Activin A signals through the ActRIIB receptor, which can be blocked by administration of the ligand trap ActRIIB-Fc, a soluble activin type IIB receptor fused to human IgG1 Fc. In a murine model of tuberculosis, we found that ActRIIB-Fc treatment reduced mycobacterial loads. Strikingly, ActRIIB-Fc treatment significantly increased the number of tissue-resident memory T cells. These results suggest a role for ActRIIB signaling pathways in host responses to Mycobacterium tuberculosis and activin A as a biomarker of ongoing disease.
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Affiliation(s)
- Natalie E. Nieuwenhuizen
- Department of Immunology, Max Planck Institute for Infection Biology, Chariteplatz, Berlin, Germany
- Institute for Hygiene and Microbiology, Julius Maximilian University of Würzburg, Würzburg, Germany
| | - Geraldine Nouailles
- Department of Infectious Diseases, Respiratory Medicine and Critical Care, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Jayne S. Sutherland
- Vaccines and Immunity Theme, Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, Fajara, The Gambia
| | - Joanna Zyla
- Department of Data Science and Engineering, Silesian University of Technology, Gliwice, Poland
| | - Arja H. Pasternack
- Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Jan Heyckendorf
- Department of Medicine I, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Björn C. Frye
- Department of Pneumology, Clinic, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Kerstin Höhne
- Department of Pneumology, Clinic, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Ulrike Zedler
- Department of Immunology, Max Planck Institute for Infection Biology, Chariteplatz, Berlin, Germany
| | - Silke Bandermann
- Department of Immunology, Max Planck Institute for Infection Biology, Chariteplatz, Berlin, Germany
| | - Ulrike Abu Abed
- Microscopy Core Facility, Max Planck Institute for Infection Biology, Chariteplatz, Berlin, Germany
| | - Volker Brinkmann
- Microscopy Core Facility, Max Planck Institute for Infection Biology, Chariteplatz, Berlin, Germany
| | - Birgitt Gutbier
- Department of Infectious Diseases, Respiratory Medicine and Critical Care, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Martin Witzenrath
- Department of Infectious Diseases, Respiratory Medicine and Critical Care, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
- CAPNETZ STIFTUNG, Hannover, Germany
- German Center for Lung Research (DZL), Berlin, Germany
| | - Norbert Suttorp
- Department of Infectious Diseases, Respiratory Medicine and Critical Care, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
- CAPNETZ STIFTUNG, Hannover, Germany
- German Center for Lung Research (DZL), Berlin, Germany
| | - Gernot Zissel
- Department of Pneumology, Clinic, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christoph Lange
- Division of Clinical Infectious Diseases, Research Center Borstel, Borstel, Germany
- German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Borstel, Germany
- Respiratory Medicine and International Health, University of Lübeck, Lübeck, Germany
- Baylor College of Medicine and Texas Children´s Hospital, Global TB Program, Houston, Texas, USA
| | - Olli Ritvos
- Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Stefan H. E. Kaufmann
- Department of Immunology, Max Planck Institute for Infection Biology, Chariteplatz, Berlin, Germany
- Max Planck Institute for Multidisciplinary Sciences, Emeritus Group Systems Immunology, Göttingen, Germany
- Hagler Institute for Advanced Study, Texas A&M University, College Station, Texas, USA
| | - the CAPNETZ Study group
- Department of Immunology, Max Planck Institute for Infection Biology, Chariteplatz, Berlin, Germany
- Institute for Hygiene and Microbiology, Julius Maximilian University of Würzburg, Würzburg, Germany
- Department of Infectious Diseases, Respiratory Medicine and Critical Care, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
- Vaccines and Immunity Theme, Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, Fajara, The Gambia
- Department of Data Science and Engineering, Silesian University of Technology, Gliwice, Poland
- Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Medicine I, University Hospital Schleswig-Holstein, Kiel, Germany
- Department of Pneumology, Clinic, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Microscopy Core Facility, Max Planck Institute for Infection Biology, Chariteplatz, Berlin, Germany
- CAPNETZ STIFTUNG, Hannover, Germany
- German Center for Lung Research (DZL), Berlin, Germany
- Division of Clinical Infectious Diseases, Research Center Borstel, Borstel, Germany
- German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Borstel, Germany
- Respiratory Medicine and International Health, University of Lübeck, Lübeck, Germany
- Baylor College of Medicine and Texas Children´s Hospital, Global TB Program, Houston, Texas, USA
- Max Planck Institute for Multidisciplinary Sciences, Emeritus Group Systems Immunology, Göttingen, Germany
- Hagler Institute for Advanced Study, Texas A&M University, College Station, Texas, USA
| | - the DZIF TB study group
- Department of Immunology, Max Planck Institute for Infection Biology, Chariteplatz, Berlin, Germany
- Institute for Hygiene and Microbiology, Julius Maximilian University of Würzburg, Würzburg, Germany
- Department of Infectious Diseases, Respiratory Medicine and Critical Care, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
- Vaccines and Immunity Theme, Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, Fajara, The Gambia
- Department of Data Science and Engineering, Silesian University of Technology, Gliwice, Poland
- Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Medicine I, University Hospital Schleswig-Holstein, Kiel, Germany
- Department of Pneumology, Clinic, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Microscopy Core Facility, Max Planck Institute for Infection Biology, Chariteplatz, Berlin, Germany
- CAPNETZ STIFTUNG, Hannover, Germany
- German Center for Lung Research (DZL), Berlin, Germany
- Division of Clinical Infectious Diseases, Research Center Borstel, Borstel, Germany
- German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Borstel, Germany
- Respiratory Medicine and International Health, University of Lübeck, Lübeck, Germany
- Baylor College of Medicine and Texas Children´s Hospital, Global TB Program, Houston, Texas, USA
- Max Planck Institute for Multidisciplinary Sciences, Emeritus Group Systems Immunology, Göttingen, Germany
- Hagler Institute for Advanced Study, Texas A&M University, College Station, Texas, USA
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Weckerle J, Mayr CH, Fundel-Clemens K, Lämmle B, Boryn L, Thomas MJ, Bretschneider T, Luippold AH, Huber HJ, Viollet C, Rist W, Veyel D, Ramirez F, Klee S, Kästle M. Transcriptomic and Proteomic Changes Driving Pulmonary Fibrosis Resolution in Young and Old Mice. Am J Respir Cell Mol Biol 2023; 69:422-440. [PMID: 37411041 DOI: 10.1165/rcmb.2023-0012oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 07/06/2023] [Indexed: 07/08/2023] Open
Abstract
Bleomycin-induced pulmonary fibrosis in mice mimics major hallmarks of idiopathic pulmonary fibrosis. Yet in this model, it spontaneously resolves over time. We studied molecular mechanisms of fibrosis resolution and lung repair, focusing on transcriptional and proteomic signatures and the effect of aging. Old mice showed incomplete and delayed lung function recovery 8 weeks after bleomycin instillation. This shift in structural and functional repair in old bleomycin-treated mice was reflected in a temporal shift in gene and protein expression. We reveal gene signatures and signaling pathways that underpin the lung repair process. Importantly, the downregulation of WNT, BMP, and TGFβ antagonists Frzb, Sfrp1, Dkk2, Grem1, Fst, Fstl1, and Inhba correlated with lung function improvement. Those genes constitute a network with functions in stem cell pathways, wound, and pulmonary healing. We suggest that insufficient and delayed downregulation of those antagonists during fibrosis resolution in old mice explains the impaired regenerative outcome. Together, we identified signaling pathway molecules with relevance to lung regeneration that should be tested in-depth experimentally as potential therapeutic targets for pulmonary fibrosis.
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Affiliation(s)
| | | | | | - Bärbel Lämmle
- Global Computational Biology and Digital Sciences, and
| | | | | | - Tom Bretschneider
- Department of Drug Discovery Sciences, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riß, Germany; and
| | - Andreas H Luippold
- Department of Drug Discovery Sciences, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riß, Germany; and
| | | | | | - Wolfgang Rist
- Department of Drug Discovery Sciences, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riß, Germany; and
| | - Daniel Veyel
- Department of Drug Discovery Sciences, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riß, Germany; and
| | - Fidel Ramirez
- Global Computational Biology and Digital Sciences, and
| | - Stephan Klee
- Department of Immunology and Respiratory Disease Research
| | - Marc Kästle
- Department of Immunology and Respiratory Disease Research
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4
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Wang Q, Xie Z, Wan N, Yang L, Jin Z, Jin F, Huang Z, Chen M, Wang H, Feng J. Potential biomarkers for diagnosis and disease evaluation of idiopathic pulmonary fibrosis. Chin Med J (Engl) 2023; 136:1278-1290. [PMID: 37130223 PMCID: PMC10309524 DOI: 10.1097/cm9.0000000000002171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Indexed: 05/04/2023] Open
Abstract
ABSTRACT Idiopathic pulmonary fibrosis (IPF) is a chronic progressive lung disease characterized by progressive lung fibrogenesis and histological features of usual interstitial pneumonia. IPF has a poor prognosis and presents a spectrum of disease courses ranging from slow evolving disease to rapid deterioration; thus, a differential diagnosis remains challenging. Several biomarkers have been identified to achieve a differential diagnosis; however, comprehensive reviews are lacking. This review summarizes over 100 biomarkers which can be divided into six categories according to their functions: differentially expressed biomarkers in the IPF compared to healthy controls; biomarkers distinguishing IPF from other types of interstitial lung disease; biomarkers differentiating acute exacerbation of IPF from stable disease; biomarkers predicting disease progression; biomarkers related to disease severity; and biomarkers related to treatment. Specimen used for the diagnosis of IPF included serum, bronchoalveolar lavage fluid, lung tissue, and sputum. IPF-specific biomarkers are of great clinical value for the differential diagnosis of IPF. Currently, the physiological measurements used to evaluate the occurrence of acute exacerbation, disease progression, and disease severity have limitations. Combining physiological measurements with biomarkers may increase the accuracy and sensitivity of diagnosis and disease evaluation of IPF. Most biomarkers described in this review are not routinely used in clinical practice. Future large-scale multicenter studies are required to design and validate suitable biomarker panels that have diagnostic utility for IPF.
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Affiliation(s)
- Qing Wang
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
- Department of Respiratory and Critical Care Medicine of Kunming Municipal First People's Hospital, Kunming, Yunnan 650000, China
| | - Zhaoliang Xie
- Respiratory Department of Sanming Yong’an General Hospital, Sanming, Fujian 366000, China
| | - Nansheng Wan
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Lei Yang
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Zhixian Jin
- Department of Respiratory and Critical Care Medicine of Kunming Municipal First People's Hospital, Kunming, Yunnan 650000, China
| | - Fang Jin
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Zhaoming Huang
- Department of Respiratory and Critical Care Medicine of Kunming Municipal First People's Hospital, Kunming, Yunnan 650000, China
| | - Min Chen
- Department of Respiratory and Critical Care Medicine of Kunming Municipal First People's Hospital, Kunming, Yunnan 650000, China
| | - Huiming Wang
- Department of Respiratory and Critical Care Medicine of Kunming Municipal First People's Hospital, Kunming, Yunnan 650000, China
| | - Jing Feng
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
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5
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Cantu A, Gutierrez MC, Dong X, Leek C, Sajti E, Lingappan K. Remarkable sex-specific differences at single-cell resolution in neonatal hyperoxic lung injury. Am J Physiol Lung Cell Mol Physiol 2023; 324:L5-L31. [PMID: 36283964 PMCID: PMC9799156 DOI: 10.1152/ajplung.00269.2022] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/12/2022] [Accepted: 10/18/2022] [Indexed: 01/12/2023] Open
Abstract
Exposure to supraphysiological concentrations of oxygen (hyperoxia) predisposes to bronchopulmonary dysplasia (BPD), which is characterized by abnormal alveolarization and pulmonary vascular development, in preterm neonates. Neonatal hyperoxia exposure is used to recapitulate the phenotype of human BPD in murine models. Male sex is considered an independent predictor for the development of BPD, but the main mechanisms underlying sexually dimorphic outcomes are unknown. Our objective was to investigate sex-specific and cell-type specific transcriptional changes that drive injury in the neonatal lung exposed to hyperoxia at single-cell resolution and delineate the changes in cell-cell communication networks in the developing lung. We used single-cell RNA sequencing (scRNAseq) to generate transcriptional profiles of >35,000 cells isolated from the lungs of neonatal male and female C57BL/6 mice exposed to 95% [Formula: see text] between PND1-5 (saccular stage of lung development) or normoxia and euthanized at PND7 (alveolar stage of lung development). ScRNAseq identified 22 cell clusters with distinct populations of endothelial, epithelial, mesenchymal, and immune cells. Our data identified that the distal lung vascular endothelium (composed of aerocytes and general capillary endothelial cells) is exquisitely sensitive to hyperoxia exposure with the emergence of an intermediate capillary endothelial population with both general capillaries (gCap) and aerocytes or alveolar capillaries (aCap) markers. We also identified a myeloid-derived suppressor cell population from the lung neutrophils. Sex-specific differences were evident in all lung cell subpopulations but were striking among the lung immune cells. Finally, we identified that the specific intercellular communication networks and the ligand-receptor pairs that are impacted by neonatal hyperoxia exposure.
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Affiliation(s)
- Abiud Cantu
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Manuel C Gutierrez
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Xiaoyu Dong
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas
| | - Connor Leek
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Eniko Sajti
- Department of Pediatrics, University of California, La Jolla, California
| | - Krithika Lingappan
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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Sun Y, Cai H, Ge J, Shao F, Huang Z, Ding Z, Dong L, Chen J, Zhang J, Zang Y. Tubule-derived INHBB promotes interstitial fibroblast activation and renal fibrosis. J Pathol 2022; 256:25-37. [PMID: 34543458 DOI: 10.1002/path.5798] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 08/23/2021] [Accepted: 09/16/2021] [Indexed: 01/15/2023]
Abstract
Upstream stimuli for myofibroblast activation are of considerable interest for understanding the mechanisms underlying renal fibrosis. Activin B, a member of the TGF-β family, exists as a homodimer of inhibin subunit beta B (INHBB), but its role in renal fibrosis remains unknown. We found that INHBB expression was significantly increased in various renal fibrosis models and human chronic kidney disease specimens with renal fibrosis. Notably, the increase of INHBB occurred mainly in the tubular epithelial cells (TECs). In vivo, inhibiting INHBB blocked the activation of interstitial fibroblasts and ameliorated the renal fibrosis induced by unilateral ureteral obstruction or ischemia-reperfusion injury, while ectopic expression of INHBB in the TECs was able to activate interstitial fibroblasts and initiate interstitial fibrosis. In vitro, overexpression of INHBB in TECs led to the secretion of activin B, thereby promoting the proliferation and activation of interstitial fibroblasts through activin B/Smad signaling. Furthermore, inhibition of activin B/Smad signaling attenuated the fibrotic response caused by tubular INHBB. Mechanistically, the upregulation of INHBB depended on the transcription factor Sox9 in the injured TECs. Clinical analyses also identified a positive correlation between Sox9 and INHBB expression in human specimens, suggesting the Sox9/INHBB axis as a positive regulator of renal fibrosis. In conclusion, tubule-derived INHBB is implicated in the pathogenesis of renal fibrosis by activating the surrounding fibroblasts in a paracrine manner, thereby exhibiting as a potential therapeutic target. © 2021 The Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Yanyan Sun
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, PR China
| | - Huimin Cai
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, PR China
| | - Jia Ge
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, PR China
| | - Fang Shao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, PR China
| | - Zhen Huang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, PR China
| | - Zhi Ding
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, PR China
| | - Lei Dong
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, PR China
| | - Jiangning Chen
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, PR China
- State Key Laboratory of Analytical Chemistry for Life Sciences and Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing, PR China
| | - Junfeng Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, PR China
| | - Yuhui Zang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, PR China
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7
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Xie T, Han L, Chen Y, Wu H. Progranulin and Activin A Concentrations are Elevated in Serum from Patients with Acute Exacerbations of Idiopathic Pulmonary Fibrosis. Lung 2021; 199:467-473. [PMID: 34462814 PMCID: PMC8510987 DOI: 10.1007/s00408-021-00470-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 08/19/2021] [Indexed: 01/06/2023]
Abstract
Purpose Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive fibrotic lung disease of unknown cause with a variable course. Acute exacerbations of IPF (AE-IPF) is sudden accelerations of the disease or a superimposed idiopathic acute injury significantly reducing lung function. To examine the serum concentrations of Progranulin (PGRN) and activin A in patients with AE-IPF in a pilot study. Methods Twenty-one patients with AE-IPF were compared with 23 patients with stable IPF as a control group. Serum PGRN and activin A levels, arterial blood gas measurements, and lung function were determined in these two groups. Results Peripheral blood PGRN and activin A levels in patients with AE-IPF were 83.7 + 10.0 and 14.2 ± 1.7 ng/ml (mean + SD), respectively; higher than those in the control group 61.0 + 5.8 and 5.8 + 1.0 (p < 0.001). PGRN and activin A levels were significantly negatively correlated with carbon monoxide diffusion capacity r = − 0.857 (p < 0.001) and r = − 0.757 (p < 0.001). Conclusion Progranulin (PGRN) and activin A may be involved in the pathogenesis of AE-IPF. They may be possible markers of disease activity in AE-IPF.
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Affiliation(s)
- Tian Xie
- Department of Pulmonary and Critical Care Medicine, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, 19 Xiuhua Road, Xiuying District, Haikou, 570311, Hainan Province, China.
| | - Lizhen Han
- Department of Medical Records and Statistics, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, 570311, Hainan, China
| | - Yongxing Chen
- Department of Pulmonary and Critical Care Medicine, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, 19 Xiuhua Road, Xiuying District, Haikou, 570311, Hainan Province, China
| | - Haihong Wu
- Department of Pulmonary and Critical Care Medicine, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, 19 Xiuhua Road, Xiuying District, Haikou, 570311, Hainan Province, China
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8
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Single-Cell RNA-Seq Reveals Transcriptomic Heterogeneity and Post-Traumatic Osteoarthritis-Associated Early Molecular Changes in Mouse Articular Chondrocytes. Cells 2021; 10:cells10061462. [PMID: 34200880 PMCID: PMC8230441 DOI: 10.3390/cells10061462] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/02/2021] [Accepted: 06/07/2021] [Indexed: 12/25/2022] Open
Abstract
Articular cartilage is a connective tissue lining the surfaces of synovial joints. When the cartilage severely wears down, it leads to osteoarthritis (OA), a debilitating disease that affects millions of people globally. The articular cartilage is composed of a dense extracellular matrix (ECM) with a sparse distribution of chondrocytes with varying morphology and potentially different functions. Elucidating the molecular and functional profiles of various chondrocyte subtypes and understanding the interplay between these chondrocyte subtypes and other cell types in the joint will greatly expand our understanding of joint biology and OA pathology. Although recent advances in high-throughput OMICS technologies have enabled molecular-level characterization of tissues and organs at an unprecedented resolution, thorough molecular profiling of articular chondrocytes has not yet been undertaken, which may be in part due to the technical difficulties in isolating chondrocytes from dense cartilage ECM. In this study, we profiled articular cartilage from healthy and injured mouse knee joints at a single-cell resolution and identified nine chondrocyte subtypes with distinct molecular profiles and injury-induced early molecular changes in these chondrocytes. We also compared mouse chondrocyte subpopulations to human chondrocytes and evaluated the extent of molecular similarity between mice and humans. This work expands our view of chondrocyte heterogeneity and rapid molecular changes in chondrocyte populations in response to joint trauma and highlights potential mechanisms that trigger cartilage degeneration.
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9
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Logan SM, Storey KB. Angiogenic signaling in the lungs of a metabolically suppressed hibernating mammal ( Ictidomys tridecemlineatus). PeerJ 2019; 7:e8116. [PMID: 31763078 PMCID: PMC6870509 DOI: 10.7717/peerj.8116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 10/29/2019] [Indexed: 01/18/2023] Open
Abstract
To conserve energy in times of limited resource availability, particularly during cold winters, hibernators suppress even the most basic of physiologic processes. Breathing rates decrease from 40 breaths/minute to less than 1 breath/min as they decrease body temperature from 37 °C to ambient. Nevertheless, after months of hibernation, these incredible mammals emerge from torpor unscathed. This study was conducted to better understand the protective and possibly anti-inflammatory adaptations that hibernator lungs may use to prevent damage associated with entering and emerging from natural torpor. We postulated that the differential protein expression of soluble protein receptors (decoy receptors that sequester soluble ligands to inhibit signal transduction) would help identify inhibited inflammatory signaling pathways in metabolically suppressed lungs. Instead, the only two soluble receptors that responded to torpor were sVEGFR1 and sVEGFR2, two receptors whose full-length forms are bound by VEGF-A to regulate endothelial cell function and angiogenesis. Decreased sVEGFR1/2 correlated with increased total VEGFR2 protein levels. Maintained or increased levels of key γ-secretase subunits suggested that decreased sVEGFR1/2 protein levels were not due to decreased levels of intramembrane cleavage complex subunits. VEGF-A protein levels did not change, suggesting that hibernators may regulate VEGFR1/2 signaling at the level of the receptor instead of increasing relative ligand abundance. A panel of angiogenic factors used to identify biomarkers of angiogenesis showed a decrease in FGF-1 and an increase in BMP-9. Torpid lungs may use VEGF and BMP-9 signaling to balance angiogenesis and vascular stability, possibly through the activation of SMAD signaling for adaptive tissue remodeling.
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Affiliation(s)
- Samantha M. Logan
- Institute of Biochemistry, Departments of Biology and Chemistry, Carleton University, Ottawa, ON, Canada
| | - Kenneth B. Storey
- Institute of Biochemistry, Departments of Biology and Chemistry, Carleton University, Ottawa, ON, Canada
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10
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Wang Y, Yella J, Chen J, McCormack FX, Madala SK, Jegga AG. Unsupervised gene expression analyses identify IPF-severity correlated signatures, associated genes and biomarkers. BMC Pulm Med 2017; 17:133. [PMID: 29058630 PMCID: PMC5649521 DOI: 10.1186/s12890-017-0472-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 10/01/2017] [Indexed: 12/30/2022] Open
Abstract
Background Idiopathic Pulmonary Fibrosis (IPF) is a fatal fibrotic lung disease occurring predominantly in middle-aged and older adults. The traditional diagnostic classification of IPF is based on clinical, radiological, and histopathological features. However, the considerable heterogeneity in IPF presentation suggests that differences in gene expression profiles can help to characterize and distinguish disease severity. Methods We used data-driven unsupervised clustering analysis, combined with a knowledge-based approach to identify and characterize IPF subgroups. Results Using transcriptional profiles on lung tissue from 131 patients with IPF/UIP and 12 non-diseased controls, we identified six subgroups of IPF that generally correlated with the disease severity and lung function decline. Network-informed clustering identified the most severe subgroup of IPF that was enriched with genes regulating inflammatory processes, blood pressure and branching morphogenesis of the lung. The differentially expressed genes in six subgroups of IPF compared to healthy control include transcripts of extracellular matrix, epithelial-mesenchymal cell cross-talk, calcium ion homeostasis, and oxygen transport. Further, we compiled differentially expressed gene signatures to identify unique gene clusters that can segregate IPF from normal, and severe from mild IPF. Additional validations of these signatures were carried out in three independent cohorts of IPF/UIP. Finally, using knowledge-based approaches, we identified several novel candidate genes which may also serve as potential biomarkers of IPF. Conclusions Discovery of unique and redundant gene signatures for subgroups in IPF can be greatly facilitated through unsupervised clustering. Findings derived from such gene signatures may provide insights into pathogenesis of IPF and facilitate the development of clinically useful biomarkers. Electronic supplementary material The online version of this article (10.1186/s12890-017-0472-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yunguan Wang
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Jaswanth Yella
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Jing Chen
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Francis X McCormack
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Satish K Madala
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA. .,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| | - Anil G Jegga
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA. .,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA. .,Department of Computer Science, University of Cincinnati College of Engineering, Cincinnati, OH, USA.
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11
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Nicolas N, Muir JA, Hayward S, Chen JL, Stanton PG, Gregorevic P, de Kretser DM, Loveland KL, Bhushan S, Meinhardt A, Fijak M, Hedger MP. Induction of experimental autoimmune orchitis in mice: responses to elevated circulating levels of the activin-binding protein, follistatin. Reproduction 2017; 154:293-305. [PMID: 28667125 DOI: 10.1530/rep-17-0010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 06/22/2017] [Accepted: 06/30/2017] [Indexed: 12/20/2022]
Abstract
Experimental autoimmune orchitis (EAO) is a rodent model of chronic testicular inflammation that mimics the pathology observed in some types of human infertility. In a previous study, testicular expression of the inflammatory/immunoregulatory cytokine, activin A, was elevated in adult mice during the onset of EAO, indicating a potential role in the regulation of the disease. Consequently, we examined the development of EAO in mice with elevated levels of follistatin, an endogenous activin antagonist, as a potential therapeutic approach to testicular inflammation. Prior to EAO induction, mice received a single intramuscular injection of a non-replicative recombinant adeno-associated viral vector carrying a gene cassette of the circulating form of follistatin, FST315 (FST group). Serum follistatin levels were increased 5-fold in the FST group compared with the control empty vector (EV) group at 30 and 50 days of EAO, but intra-testicular levels of follistatin or activin A were not significantly altered. Induction of EAO was reduced, but not prevented, with mild-to-severe damage in 75% of the EV group and 40% of the FST group, at 50 days following immunisation with testicular homogenate. However, the EAO damage score (based on disruption of the blood-testis barrier, apoptosis, testicular damage and fibrosis) and extent of intratesticular inflammation (expression of inflammatory mediators) were directly proportional to the levels of activin A measured in the testis at 50 days. These data implicate activin A in the progression of EAO, thereby providing a potential therapeutic target; however, elevating circulating follistatin levels were not sufficient to prevent EAO development.
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Affiliation(s)
- Nour Nicolas
- Department of Anatomy and Cell Biology, Justus Liebig University, Giessen, Germany.,Hudson Institute of Medical Research, Clayton, Australia
| | - Julie A Muir
- Hudson Institute of Medical Research, Clayton, Australia
| | - Susan Hayward
- Hudson Institute of Medical Research, Clayton, Australia
| | - Justin L Chen
- Hudson Institute of Medical Research, Clayton, Australia.,Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | | | - Paul Gregorevic
- Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - David M de Kretser
- Hudson Institute of Medical Research, Clayton, Australia.,Department of Anatomy and Developmental Biology, Monash University, Melbourne, Australia
| | - Kate L Loveland
- Hudson Institute of Medical Research, Clayton, Australia.,School of Clinical Sciences, Monash University, Melbourne, Australia
| | - Sudhanshu Bhushan
- Department of Anatomy and Cell Biology, Justus Liebig University, Giessen, Germany
| | - Andreas Meinhardt
- Department of Anatomy and Cell Biology, Justus Liebig University, Giessen, Germany.,Hudson Institute of Medical Research, Clayton, Australia
| | - Monika Fijak
- Department of Anatomy and Cell Biology, Justus Liebig University, Giessen, Germany
| | - Mark P Hedger
- Hudson Institute of Medical Research, Clayton, Australia.,Department of Anatomy and Developmental Biology, Monash University, Melbourne, Australia
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12
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Palin NK, Savikko J, Pasternack A, Rintala JM, Kalra B, Mistry S, Kumar A, Roth MP, Helin H, Ritvos O. Activin inhibition limits early innate immune response in rat kidney allografts-a pilot study. Transpl Int 2016; 30:96-107. [DOI: 10.1111/tri.12876] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 12/23/2015] [Accepted: 10/06/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Niina K. Palin
- Kidney Transplant Research Group; Transplantation Laboratory; University of Helsinki and Helsinki University Hospital; Helsinki Finland
| | - Johanna Savikko
- Kidney Transplant Research Group; Transplantation Laboratory; University of Helsinki and Helsinki University Hospital; Helsinki Finland
- Transplantation and Liver Surgery Unit; Helsinki University Hospital; Helsinki Finland
| | - Arja Pasternack
- Department of Bacteriology and Immunology and Department of Physiology; Faculty of Medicine; University of Helsinki; Helsinki Finland
| | - Jukka M. Rintala
- Kidney Transplant Research Group; Transplantation Laboratory; University of Helsinki and Helsinki University Hospital; Helsinki Finland
| | | | | | | | | | - Heikki Helin
- Department of Pathology; University of Helsinki and Helsinki University Hospital; Helsinki Finland
| | - Olli Ritvos
- Department of Bacteriology and Immunology and Department of Physiology; Faculty of Medicine; University of Helsinki; Helsinki Finland
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13
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Wang CY, Hsieh MJ, Hsieh IC, Shie SS, Ho MY, Yeh JK, Tsai ML, Yang CH, Hung KC, Wang CC, Wen MS. CLOCK modulates survival and acute lung injury in mice with polymicrobial sepsis. Biochem Biophys Res Commun 2016; 478:935-41. [DOI: 10.1016/j.bbrc.2016.08.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 08/08/2016] [Indexed: 01/01/2023]
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14
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Koli K, Sutinen E, Rönty M, Rantakari P, Fortino V, Pulkkinen V, Greco D, Sipilä P, Myllärniemi M. Gremlin-1 Overexpression in Mouse Lung Reduces Silica-Induced Lymphocyte Recruitment - A Link to Idiopathic Pulmonary Fibrosis through Negative Correlation with CXCL10 Chemokine. PLoS One 2016; 11:e0159010. [PMID: 27428020 PMCID: PMC4948891 DOI: 10.1371/journal.pone.0159010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 06/25/2016] [Indexed: 12/24/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is characterized by activation and injury of epithelial cells, the accumulation of connective tissue and changes in the inflammatory microenvironment. The bone morphogenetic protein (BMP) inhibitor protein gremlin-1 is associated with the progression of fibrosis both in human and mouse lung. We generated a transgenic mouse model expressing gremlin-1 in type II lung epithelial cells using the surfactant protein C (SPC) promoter and the Cre-LoxP system. Gremlin-1 protein expression was detected specifically in the lung after birth and did not result in any signs of respiratory insufficiency. Exposure to silicon dioxide resulted in reduced amounts of lymphocyte aggregates in transgenic lungs while no alteration in the fibrotic response was observed. Microarray gene expression profiling and analyses of bronchoalveolar lavage fluid cytokines indicated a reduced lymphocytic response and a downregulation of interferon-induced gene program. Consistent with reduced Th1 response, there was a downregulation of the mRNA and protein expression of the anti-fibrotic chemokine CXCL10, which has been linked to IPF. In human IPF patient samples we also established a strong negative correlation in the mRNA expression levels of gremlin-1 and CXCL10. Our results suggest that in addition to regulation of epithelial-mesenchymal crosstalk during tissue injury, gremlin-1 modulates inflammatory cell recruitment and anti-fibrotic chemokine production in the lung.
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Affiliation(s)
- Katri Koli
- Research Programs Unit, Translational Cancer Biology, University of Helsinki, Helsinki, Finland
- Transplantation Laboratory, Haartman Institute, University of Helsinki, Helsinki, Finland
- * E-mail:
| | - Eva Sutinen
- Transplantation Laboratory, Haartman Institute, University of Helsinki, Helsinki, Finland
- University of Helsinki and Helsinki University Hospital, Heart and Lung Center, Department of Pulmonary Medicine, Helsinki, Finland
| | - Mikko Rönty
- Department of Pathology, University of Helsinki and Fimlab laboratories, Pathology, Tampere, Finland
| | - Pia Rantakari
- MediCity Research Laboratory, University of Turku, Turku, Finland
| | - Vittorio Fortino
- Unit of Systems Toxicology and Nanosafety Centre, Finnish Institute of Occupational Health (FIOH), Helsinki, Finland
| | - Ville Pulkkinen
- University of Helsinki and Helsinki University Hospital, Heart and Lung Center, Department of Pulmonary Medicine, Helsinki, Finland
| | - Dario Greco
- Unit of Systems Toxicology and Nanosafety Centre, Finnish Institute of Occupational Health (FIOH), Helsinki, Finland
| | - Petra Sipilä
- Department of Physiology, Institute of Biomedicine and Turku Center for Disease Modeling, University of Turku, Turku, Finland
| | - Marjukka Myllärniemi
- Transplantation Laboratory, Haartman Institute, University of Helsinki, Helsinki, Finland
- University of Helsinki and Helsinki University Hospital, Heart and Lung Center, Department of Pulmonary Medicine, Helsinki, Finland
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15
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Ahlfeld SK, Wang J, Gao Y, Snider P, Conway SJ. Initial Suppression of Transforming Growth Factor-β Signaling and Loss of TGFBI Causes Early Alveolar Structural Defects Resulting in Bronchopulmonary Dysplasia. THE AMERICAN JOURNAL OF PATHOLOGY 2016; 186:777-93. [PMID: 26878215 DOI: 10.1016/j.ajpath.2015.11.024] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 11/02/2015] [Accepted: 11/18/2015] [Indexed: 12/22/2022]
Abstract
Septation of the gas-exchange saccules of the morphologically immature mouse lung requires regulated timing, spatial direction, and dosage of transforming growth factor (TGF)-β signaling. We found that neonatal hyperoxia acutely initially diminished saccular TGF-β signaling coincident with alveolar simplification. However, sustained hyperoxia resulted in a biphasic response and subsequent up-regulation of TGF-β signaling, ultimately resulting in bronchopulmonary dysplasia. Significantly, we found that the TGF-β-induced matricellular protein (TGFBI) was similarly biphasically altered in response to hyperoxia. Moreover, genetic ablation revealed that TGFBI was required for normal alveolar structure and function. Although the phenotype was not neonatal lethal, Tgfbi-deficient lungs were morphologically abnormal. Mutant septal tips were stunted, lacked elastin-positive tips, exhibited reduced proliferation, and contained abnormally persistent alveolar α-smooth muscle actin myofibroblasts. In addition, Tgfbi-deficient lungs misexpressed TGF-β-responsive follistatin and serpine 1, and transiently suppressed myofibroblast platelet-derived growth factor α differentiation marker. Finally, despite normal lung volume, Tgfbi-null lungs displayed diminished elastic recoil and gas exchange efficiency. Combined, these data demonstrate that initial suppression of the TGF-β signaling apparatus, as well as loss of key TGF-β effectors (like TGFBI), underlies early alveolar structural defects, as well as long-lasting functional deficits routinely observed in chronic lung disease of infancy patients. These studies underline the complex (and often contradictory) role of TGF-β and indicate a need to design studies to associate alterations with initial appearance of phenotypical changes suggestive of bronchopulmonary dysplasia.
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Affiliation(s)
- Shawn K Ahlfeld
- HB Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana
| | - Jian Wang
- HB Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana
| | - Yong Gao
- HB Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana
| | - Paige Snider
- HB Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana
| | - Simon J Conway
- HB Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana.
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16
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Ziora D, Jastrzębski D, Adamek M, Czuba Z, Kozielski JJ, Grzanka A, Kasperska-Zajac A. Circulating concentration of markers of angiogenic activity in patients with sarcoidosis and idiopathic pulmonary fibrosis. BMC Pulm Med 2015; 15:113. [PMID: 26438257 PMCID: PMC4595322 DOI: 10.1186/s12890-015-0110-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 09/23/2015] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Angiogenesis is an important process involved in the pathogenesis of diffuse parenchymal lung diseases. The aim of the study was to compare the angiogenic profile of patients with sarcoidosis and idiopathic pulmonary fibrosis (IPF) based on analysis of circulating factors. METHODS Serum concentrations of angiopoietin-2 (Ang-2), follistatin, granulocyte-macrophage-colony stimulating factor (GM-CSF), interleukin-8 (IL-8), platelet derived growth factor-BB (PDGF-BB), platelet endothelial cellular adhesion molecule-1 (PECAM-1) and vascular endothelial growth factors (VEGF) were measured in the patients and the healthy subjects. RESULTS Serum concentrations of G-CSF, follistatin, PECAM-1 and IL-8 were significantly higher in the IPF patients in comparison with the control group and the sarcoid patients. PDGF-BB concentrations were also significantly higher in serum of IPF patients than in sarcoid patients, but not than in the controls. In contrast, Ang-2 and VEGF concentrations did not differ significantly between the three groups. In the sarcoid patients, irrespective of the disease activity or the radiological stage, serum concentrations of these cytokines were similar to the control group. CONCLUSIONS These results indicate that differences may exist in angiogenic activity between patients with parenchymal lung diseases. In contrast to sarcoidosis, IPF is characterized by a higher serum concentration of different molecules involved in the angiogenic processes .
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Affiliation(s)
- Dariusz Ziora
- Department of Lung Diseases and Tuberculosis, SMDZ in Zabrze, Medical University of Silesia, Katowice, Poland.
| | - Dariusz Jastrzębski
- Department of Lung Diseases and Tuberculosis, SMDZ in Zabrze, Medical University of Silesia, Katowice, Poland.
| | - Mariusz Adamek
- Department of Thoracic Surgery, SMDZ in Zabrze, Medical University of Silesia, Katowice, Poland.
| | - Zenon Czuba
- Department of Immunology and Microbiology, SMDZ in Zabrze, Medical University of Silesia, Katowice, Poland.
| | - Jerzy J Kozielski
- Department of Lung Diseases and Tuberculosis, SMDZ in Zabrze, Medical University of Silesia, Katowice, Poland.
| | - Alicja Grzanka
- Department of Internal Diseases, Dermatology and Allergology, SMDZ in Zabrze, Medical University of Silesia, Katowice, Poland.
| | - Alicja Kasperska-Zajac
- Department of Internal Diseases, Dermatology and Allergology, SMDZ in Zabrze, Medical University of Silesia, Katowice, Poland.
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