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Li Q, Liu Y, Wu J, Zhu Z, Fan J, Zhai L, Wang Z, Du G, Zhang L, Hu J, Ma DK, Liu JO, Huang H, Tan M, Dang Y, Jiang W. P4HA2 hydroxylates SUFU to regulate the paracrine Hedgehog signaling and promote B-cell lymphoma progression. Leukemia 2024:10.1038/s41375-024-02313-8. [PMID: 38909089 DOI: 10.1038/s41375-024-02313-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 06/05/2024] [Accepted: 06/11/2024] [Indexed: 06/24/2024]
Abstract
Aberrations in the Hedgehog (Hh) signaling pathway are significantly prevailed in various cancers, including B-cell lymphoma. A critical facet of Hh signal transduction involves the dynamic regulation of the suppressor of fused homolog (SUFU)-glioma-associated oncogene homolog (GLI) complex within the kinesin family member 7 (KIF7)-supported ciliary tip compartment. However, the specific post-translational modifications of SUFU-GLI complex within this context have remained largely unexplored. Our study reveals a novel regulatory mechanism involving prolyl 4-hydroxylase 2 (P4HA2), which forms a complex with KIF7 and is essential for signal transduction of Hh pathway. We demonstrate that, upon Hh pathway activation, P4HA2 relocates alongside KIF7 to the ciliary tip. Here, it hydroxylates SUFU to inhibit its function, thus amplifying the Hh signaling. Moreover, the absence of P4HA2 significantly impedes B lymphoma progression. This effect can be attributed to the suppression of Hh signaling in stromal fibroblasts, resulting in decreased growth factors essential for malignant proliferation of B lymphoma cells. Our findings highlight the role of P4HA2-mediated hydroxylation in modulating Hh signaling and propose a novel stromal-targeted therapeutic strategy for B-cell lymphoma.
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Affiliation(s)
- Quanfu Li
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Yiyang Liu
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Jingxian Wu
- Department of pathology, College of Basic Medicine, Molecular Medicine Diagnostic and Testing Center, Department of Pathology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400016, China
| | - Zewen Zhu
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Jianjun Fan
- Basic Medicine Research and Innovation Center for Novel Target and Therapeutic Intervention, Ministry of Education, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, China
| | - Linhui Zhai
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, China
| | - Ziruoyu Wang
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Guiping Du
- Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Ling Zhang
- Basic Medicine Research and Innovation Center for Novel Target and Therapeutic Intervention, Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Junchi Hu
- Basic Medicine Research and Innovation Center for Novel Target and Therapeutic Intervention, Ministry of Education, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, China
| | - Dengke K Ma
- Department of Physiology, Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA 94158, USA
| | - Jun O Liu
- Department of Pharmacology and Molecular Sciences, The Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Hai Huang
- Department of Cell Biology, and Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Minjia Tan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Yongjun Dang
- Basic Medicine Research and Innovation Center for Novel Target and Therapeutic Intervention, Ministry of Education, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, China.
| | - Wei Jiang
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
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2
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Lahmar Z, Bergougnoux A, Bourdin A. The HHIP gene: from a candidate to an established participant in COPD susceptibility. EBioMedicine 2024; 102:105059. [PMID: 38493541 PMCID: PMC10958057 DOI: 10.1016/j.ebiom.2024.105059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 02/29/2024] [Indexed: 03/19/2024] Open
Affiliation(s)
- Zakaria Lahmar
- PhyMedExp, University of Montpellier, INSERM U1046, CNRS UMR 9214, Hôpital Arnaud de Villeneuve, CHU Montpellier, France
| | - Anne Bergougnoux
- PhyMedExp, University of Montpellier, INSERM U1046, CNRS UMR 9214, Hôpital Arnaud de Villeneuve, CHU Montpellier, France
| | - Arnaud Bourdin
- PhyMedExp, University of Montpellier, INSERM U1046, CNRS UMR 9214, Hôpital Arnaud de Villeneuve, CHU Montpellier, France.
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3
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Zhou H, Zhang Q, Liu C, Fan J, Huang W, Li N, Yang M, Wang H, Xie W, Kong H. NLRP3 inflammasome mediates abnormal epithelial regeneration and distal lung remodeling in silica‑induced lung fibrosis. Int J Mol Med 2024; 53:25. [PMID: 38240085 PMCID: PMC10836498 DOI: 10.3892/ijmm.2024.5349] [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: 09/06/2023] [Accepted: 12/28/2023] [Indexed: 01/23/2024] Open
Abstract
NOD-like receptor protein 3 (NLRP3) inflammasome is closely related to silica particle‑induced chronic lung inflammation but its role in epithelial remodeling, repair and regeneration in the distal lung during development of silicosis remains to be elucidated. The present study aimed to determine the effects of the NLRP3 inflammasome on epithelial remodeling and cellular regeneration and potential mechanisms in the distal lung of silica‑treated mice at three time points. Pulmonary function assessment, inflammatory cell counting, enzyme‑linked immunosorbent assay, histological and immunological analyses, hydroxyproline assay and western blotting were used in the study. Single intratracheal instillation of a silica suspension caused sustained NLRP3 inflammasome activation in the distal lung. Moreover, a time‑dependent increase in airway resistance and a decrease in lung compliance accompanied progression of pulmonary fibrosis. In the terminal bronchiole, lung remodeling including pyroptosis (membrane‑distributed GSDMD+), excessive proliferation (Ki67+), mucus overproduction (mucin 5 subtype AC and B) and epithelial‑mesenchymal transition (decreased E‑Cadherin+ and increased Vimentin+), was observed by immunofluorescence analysis. Notably, aberrant spatiotemporal expression of the embryonic lung stem/progenitor cell markers SOX2 and SOX9 and ectopic distribution of bronchioalveolar stem cells were observed in the distal lung only on the 7th day after silica instillation (the early inflammatory phase of silicosis). Western blotting revealed that the Sonic hedgehog/Glioma‑associated oncogene (Shh/Gli) and Wnt/β‑catenin pathways were involved in NLRP3 inflammasome activation‑mediated epithelial remodeling and dysregulated regeneration during the inflammatory and fibrotic phases. Overall, sustained NLRP3 inflammasome activation led to epithelial remodeling in the distal lung of mice. Moreover, understanding the spatiotemporal profile of dysregulated epithelial repair and regeneration may provide a novel therapeutic strategy for inhalable particle‑related chronic inflammatory and fibrotic lung disease.
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Affiliation(s)
- Hong Zhou
- Department of Pulmonary and Critical Care Medicine, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi Medical Center, Nanjing Medical University, Wuxi, Jiangsu 214023, P.R. China
| | - Qun Zhang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Chenyang Liu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Jiahao Fan
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Wen Huang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Nan Li
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Mingxia Yang
- Department of Pulmonary and Critical Care Medicine, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu 213003, P.R. China
| | - Hong Wang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Weiping Xie
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Hui Kong
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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Bush D, Juliano C, Bowler S, Tiozzo C. Development and Disorders of the Airway in Bronchopulmonary Dysplasia. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1127. [PMID: 37508624 PMCID: PMC10378517 DOI: 10.3390/children10071127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/07/2023] [Accepted: 06/26/2023] [Indexed: 07/30/2023]
Abstract
Bronchopulmonary dysplasia (BPD), a disorder characterized by arrested lung development, is a frequent cause of morbidity and mortality in premature infants. Parenchymal lung changes in BPD are relatively well-characterized and highly studied; however, there has been less emphasis placed on the role that airways disease plays in the pathophysiology of BPD. In preterm infants born between 22 and 32 weeks gestation, the conducting airways are fully formed but still immature and therefore susceptible to injury and further disruption of development. The arrest of maturation results in more compliant airways that are more susceptible to deformation and damage. Consequently, neonates with BPD are prone to developing airway pathology, particularly for patients who require intubation and positive-pressure ventilation. Airway pathology, which can be divided into large and small airways disease, results in increased respiratory morbidity in neonates with chronic lung disease of prematurity.
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Affiliation(s)
- Douglas Bush
- Division of Pediatric Pulmonology, Department of Pediatrics, Mount Sinai Hospital, Icahn School of Medicine, New York, NY 10029, USA
| | - Courtney Juliano
- Division of Neonatology, Department of Pediatrics, Mount Sinai Hospital, Icahn School of Medicine, New York, NY 10029, USA
| | - Selina Bowler
- Department of Pediatrics, New York University Langone-Long Island, Mineola, NY 11501, USA
| | - Caterina Tiozzo
- Division of Neonatology, Department of Pediatrics, Mount Sinai Hospital, Icahn School of Medicine, New York, NY 10029, USA
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5
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Zhou YH, Gallins PJ, Pace RG, Dang H, Aksit MA, Blue EE, Buckingham KJ, Collaco JM, Faino AV, Gordon WW, Hetrick KN, Ling H, Liu W, Onchiri FM, Pagel K, Pugh EW, Raraigh KS, Rosenfeld M, Sun Q, Wen J, Li Y, Corvol H, Strug LJ, Bamshad MJ, Blackman SM, Cutting GR, Gibson RL, O’Neal WK, Wright FA, Knowles MR. Genetic Modifiers of Cystic Fibrosis Lung Disease Severity: Whole-Genome Analysis of 7,840 Patients. Am J Respir Crit Care Med 2023; 207:1324-1333. [PMID: 36921087 PMCID: PMC10595435 DOI: 10.1164/rccm.202209-1653oc] [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: 09/02/2022] [Accepted: 02/27/2023] [Indexed: 03/17/2023] Open
Abstract
Rationale: Lung disease is the major cause of morbidity and mortality in persons with cystic fibrosis (pwCF). Variability in CF lung disease has substantial non-CFTR (CF transmembrane conductance regulator) genetic influence. Identification of genetic modifiers has prognostic and therapeutic importance. Objectives: Identify genetic modifier loci and genes/pathways associated with pulmonary disease severity. Methods: Whole-genome sequencing data on 4,248 unique pwCF with pancreatic insufficiency and lung function measures were combined with imputed genotypes from an additional 3,592 patients with pancreatic insufficiency from the United States, Canada, and France. This report describes association of approximately 15.9 million SNPs using the quantitative Kulich normal residual mortality-adjusted (KNoRMA) lung disease phenotype in 7,840 pwCF using premodulator lung function data. Measurements and Main Results: Testing included common and rare SNPs, transcriptome-wide association, gene-level, and pathway analyses. Pathway analyses identified novel associations with genes that have key roles in organ development, and we hypothesize that these genes may relate to dysanapsis and/or variability in lung repair. Results confirmed and extended previous genome-wide association study findings. These whole-genome sequencing data provide finely mapped genetic information to support mechanistic studies. No novel primary associations with common single variants or rare variants were found. Multilocus effects at chr5p13 (SLC9A3/CEP72) and chr11p13 (EHF/APIP) were identified. Variant effect size estimates at associated loci were consistently ordered across the cohorts, indicating possible age or birth cohort effects. Conclusions: This premodulator genomic, transcriptomic, and pathway association study of 7,840 pwCF will facilitate mechanistic and postmodulator genetic studies and the development of novel therapeutics for CF lung disease.
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Affiliation(s)
- Yi-Hui Zhou
- Bioinformatics Research Center
- Department of Biological Sciences, and
| | | | - Rhonda G. Pace
- Marsico Lung Institute/UNC CF Research Center, School of Medicine
| | - Hong Dang
- Marsico Lung Institute/UNC CF Research Center, School of Medicine
| | | | - Elizabeth E. Blue
- Brotman Baty Institute for Precision Medicine, Seattle, Washington
- Division of Medical Genetics, Department of Medicine
| | | | | | - Anna V. Faino
- Children’s Core for Biostatistics, Epidemiology and Analytics in Research and
| | | | - Kurt N. Hetrick
- Department of Genetic Medicine, Center for Inherited Disease Research, and
| | - Hua Ling
- Department of Genetic Medicine, Center for Inherited Disease Research, and
| | | | | | - Kymberleigh Pagel
- The Institute for Computational Medicine, The Johns Hopkins University, Baltimore, Maryland
| | - Elizabeth W. Pugh
- Department of Genetic Medicine, Center for Inherited Disease Research, and
| | | | - Margaret Rosenfeld
- Department of Pediatrics, and
- Center for Clinical and Translational Research, Seattle Children’s Research Institute, Seattle, Washington
| | | | | | - Yun Li
- Department of Biostatistics
- Department of Genetics, and
- Department of Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Harriet Corvol
- Pediatric Pulmonary Department, Assistance Publique-Hôpitaux de Paris, Hôpital Trousseau, Paris, France
- Centre de Recherche Saint Antoine, Sorbonne Université, Institut National de la Santé et de la Recherche Médicale, Paris, France
| | - Lisa J. Strug
- Division of Biostatistics, Dalla Lana School of Public Health
- Department of Statistical Sciences, and
- Department of Computer Science, University of Toronto, Toronto, Ontario, Canada; and
- Program in Genetics and Genome Biology and
- The Center for Applied Genomics, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Michael J. Bamshad
- Brotman Baty Institute for Precision Medicine, Seattle, Washington
- Division of Genetic Medicine, Department of Pediatrics
- Department of Genome Sciences, University of Washington, Seattle, Washington
| | - Scott M. Blackman
- McKusick-Nathans Department of Genetic Medicine
- Division of Pediatric Endocrinology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | - Ronald L. Gibson
- Department of Pediatrics, and
- Center for Clinical and Translational Research, Seattle Children’s Research Institute, Seattle, Washington
| | - Wanda K. O’Neal
- Marsico Lung Institute/UNC CF Research Center, School of Medicine
| | - Fred A. Wright
- Bioinformatics Research Center
- Department of Biological Sciences, and
- Department of Statistics, North Carolina State University, Raleigh, North Carolina
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6
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Brütsch SM, Madzharova E, Pantasis S, Wüstemann T, Gurri S, Steenbock H, Gazdhar A, Kuhn G, Angel P, Bellusci S, Brinckmann J, Auf dem Keller U, Werner S, Bordoli MR. Mesenchyme-derived vertebrate lonesome kinase controls lung organogenesis by altering the matrisome. Cell Mol Life Sci 2023; 80:89. [PMID: 36920550 PMCID: PMC10017657 DOI: 10.1007/s00018-023-04735-6] [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: 10/27/2022] [Revised: 01/29/2023] [Accepted: 02/21/2023] [Indexed: 03/16/2023]
Abstract
Vertebrate lonesome kinase (VLK) is the only known secreted tyrosine kinase and responsible for the phosphorylation of a broad range of secretory pathway-resident and extracellular matrix proteins. However, its cell-type specific functions in vivo are still largely unknown. Therefore, we generated mice lacking the VLK gene (protein kinase domain containing, cytoplasmic (Pkdcc)) in mesenchymal cells. Most of the homozygous mice died shortly after birth, most likely as a consequence of their lung abnormalities and consequent respiratory failure. E18.5 embryonic lungs showed a reduction of alveolar type II cells, smaller bronchi, and an increased lung tissue density. Global mass spectrometry-based quantitative proteomics identified 97 proteins with significantly and at least 1.5-fold differential abundance between genotypes. Twenty-five of these had been assigned to the extracellular region and 15 to the mouse matrisome. Specifically, fibromodulin and matrilin-4, which are involved in extracellular matrix organization, were significantly more abundant in lungs from Pkdcc knockout embryos. These results support a role for mesenchyme-derived VLK in lung development through regulation of matrix dynamics and the resulting modulation of alveolar epithelial cell differentiation.
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Affiliation(s)
- Salome M Brütsch
- Department of Biology, Institute of Molecular Health Sciences, Swiss Federal Institute of Technology (ETH) Zurich, 8093, Zurich, Switzerland
| | - Elizabeta Madzharova
- Department of Biotechnology and Biomedicine, Technical University of Denmark (DTU), 2800, Kongens Lyngby, Denmark
| | - Sophia Pantasis
- Department of Biology, Institute of Molecular Health Sciences, Swiss Federal Institute of Technology (ETH) Zurich, 8093, Zurich, Switzerland
| | - Till Wüstemann
- Department of Biology, Institute of Molecular Health Sciences, Swiss Federal Institute of Technology (ETH) Zurich, 8093, Zurich, Switzerland
| | - Selina Gurri
- Department of Biology, Institute of Molecular Health Sciences, Swiss Federal Institute of Technology (ETH) Zurich, 8093, Zurich, Switzerland
| | - Heiko Steenbock
- Institute of Virology and Cell Biology, University of Lübeck, 23562, Lübeck, Germany
| | - Amiq Gazdhar
- Department of Pulmonary Medicine, University Hospital Bern, 3010, Bern, Switzerland.,Department of Biomedical Research, University of Bern, 3010, Bern, Switzerland
| | - Gisela Kuhn
- Department of Health Sciences and Technology, Institute of Biomechanics, ETH Zurich, 8093, Zurich, Switzerland
| | - Peter Angel
- Division of Signal Transduction and Growth Control, DKFZ/ZMBH Alliance, German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - Saverio Bellusci
- German Lung Research Center (DCL), Giessen, Germany.,Department of Internal Medicine II, Universities of Giessen and Marburg Lung Center (UGMLC), Cardio-Pulmonary Institute (CPI), Aulweg 130, 35392, Giessen, Germany
| | - Jürgen Brinckmann
- Institute of Virology and Cell Biology, University of Lübeck, 23562, Lübeck, Germany.,Department of Dermatology, University of Lübeck, 23562, Lübeck, Germany
| | - Ulrich Auf dem Keller
- Department of Biotechnology and Biomedicine, Technical University of Denmark (DTU), 2800, Kongens Lyngby, Denmark.
| | - Sabine Werner
- Department of Biology, Institute of Molecular Health Sciences, Swiss Federal Institute of Technology (ETH) Zurich, 8093, Zurich, Switzerland.
| | - Mattia R Bordoli
- Department of Biology, Institute of Molecular Health Sciences, Swiss Federal Institute of Technology (ETH) Zurich, 8093, Zurich, Switzerland.
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7
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Lahmar Z, Ahmed E, Fort A, Vachier I, Bourdin A, Bergougnoux A. Hedgehog pathway and its inhibitors in chronic obstructive pulmonary disease (COPD). Pharmacol Ther 2022; 240:108295. [PMID: 36191777 DOI: 10.1016/j.pharmthera.2022.108295] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 08/22/2022] [Accepted: 09/28/2022] [Indexed: 11/05/2022]
Abstract
COPD affects millions of people and is now ranked as the third leading cause of death worldwide. This largely untreatable chronic airway disease results in irreversible destruction of lung architecture. The small lung hypothesis is now supported by epidemiological, physiological and clinical studies. Accordingly, the early and severe COPD phenotype carries the most dreadful prognosis and finds its roots during lung growth. Pathophysiological mechanisms remain poorly understood and implicate individual susceptibility (genetics), a large part of environmental factors (viral infections, tobacco consumption, air pollution) and the combined effects of those triggers on gene expression. Genetic susceptibility is most likely involved as the disease is severe and starts early in life. The latter observation led to the identification of Mendelian inheritance via disease-causing variants of SERPINA1 - known as the basis for alpha-1 anti-trypsin deficiency, and TERT. In the last two decades multiple genome wide association studies (GWAS) identified many single nucleotide polymorphisms (SNPs) associated with COPD. High significance SNPs are located in 4q31 near HHIP which encodes an evolutionarily highly conserved physiological inhibitor of the Hedgehog signaling pathway (HH). HHIP is critical to several in utero developmental lung processes. It is also implicated in homeostasis, injury response, epithelial-mesenchymal transition and tumor resistance to apoptosis. A few studies have reported decreased HHIP RNA and protein levels in human adult COPD lungs. HHIP+/- murine models led to emphysema. HH pathway inhibitors, such as vismodegib and sonidegib, are already validated in oncology, whereas other drugs have evidenced in vitro effects. Targeting the Hedgehog pathway could lead to a new therapeutic avenue in COPD. In this review, we focused on the early and severe COPD phenotype and the small lung hypothesis by exploring genetic susceptibility traits that are potentially treatable, thus summarizing promising therapeutics for the future.
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Affiliation(s)
- Z Lahmar
- Department of Respiratory Diseases, CHU de Montpellier, Montpellier, France
| | - E Ahmed
- Department of Respiratory Diseases, CHU de Montpellier, Montpellier, France; PhyMedExp, Univ Montpellier, Inserm U1046, CNRS UMR 9214, Montpellier, France
| | - A Fort
- PhyMedExp, Univ Montpellier, Inserm U1046, CNRS UMR 9214, Montpellier, France
| | - I Vachier
- Department of Respiratory Diseases, CHU de Montpellier, Montpellier, France; PhyMedExp, Univ Montpellier, Inserm U1046, CNRS UMR 9214, Montpellier, France
| | - A Bourdin
- Department of Respiratory Diseases, CHU de Montpellier, Montpellier, France; PhyMedExp, Univ Montpellier, Inserm U1046, CNRS UMR 9214, Montpellier, France
| | - A Bergougnoux
- PhyMedExp, Univ Montpellier, Inserm U1046, CNRS UMR 9214, Montpellier, France; Laboratoire de Génétique Moléculaire et de Cytogénomique, CHU de Montpellier, Montpellier, France.
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