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Creyns B, MacKenzie B, Sa Y, Coelho AL, Christensen D, Parimon T, Windsor B, Hogaboam CM. Caveolin scaffolding domain (CSD) peptide LTI-2355 modulates the phagocytic and synthetic activity of lung derived myeloid cells in Idiopathic Pulmonary Fibrosis (IPF) and Post-acute sequelae of COVID-fibrosis (PASC-F). BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.12.01.569608. [PMID: 38654821 PMCID: PMC11037873 DOI: 10.1101/2023.12.01.569608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Rationale The role of the innate immune system in Idiopathic Pulmonary Fibrosis (IPF) remains poorly understood. However, a functional myeloid compartment is required to remove dying cells and cellular debris, and to mediate innate immune responses against pathogens. Aberrant macrophage activity has been described in patients with Post-acute sequelae of COVID fibrosis (PASC-F). Therefore, we examined the functional and synthetic properties of myeloid cells isolated from normal donor lung and lung explant tissue from both IPF and PASC-F patients and explored the effect of LTI-2355, a Caveolin Scaffolding Domain (CSD) peptide, on these cells. Methods & Results CD45 + myeloid cells isolated from lung explant tissue from IPF and PASC-F patients exhibited an impaired capacity to clear autologous dead cells and cellular debris. Uptake of pathogen-coated bioparticles was impaired in myeloid cells from both fibrotic patient groups independent of type of pathogen highlighting a cell intrinsic functional impairment. LTI-2355 improved the phagocytic activity of both IPF and PASC-F myeloid cells, and this improvement was paired with decreased pro-inflammatory and pro-fibrotic synthetic activity. LTI-2355 was also shown to primarily target CD206-expressing IPF and PASC-F myeloid cells. Conclusions Primary myeloid cells from IPF and PASC-F patients exhibit dysfunctional phagocytic and synthetic properties that are reversed by LTI-2355. Thus, these studies highlight an additional mechanism of action of a CSD peptide in the treatment of IPF and progressive fibrotic lung disease.
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Zhang S, Zhang L, Wang L, Wang H, Wu J, Cai H, Mo C, Yang J. Machine learning identified MDK score has prognostic value for idiopathic pulmonary fibrosis based on integrated bulk and single cell expression data. Front Genet 2023; 14:1246983. [PMID: 38075691 PMCID: PMC10704369 DOI: 10.3389/fgene.2023.1246983] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 11/10/2023] [Indexed: 03/09/2024] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive and fatal lung disease that poses a significant challenge to medical professionals due to its increasing incidence and prevalence coupled with the limited understanding of its underlying molecular mechanisms. In this study, we employed a novel approach by integrating five expression datasets from bulk tissue with single-cell datasets; they underwent pseudotime trajectory analysis, switch gene selection, and cell communication analysis. Utilizing the prognostic information derived from the GSE47460 dataset, we identified 22 differentially expressed switch genes that were correlated with clinical indicators as important genes. Among these genes, we found that the midkine (MDK) gene has the potential to serve as a marker of Idiopathic pulmonary fibrosis because its cellular communicating genes are differentially expressed in the epithelial cells. We then utilized midkine and its cellular communication-related genes to calculate the midkine score. Machine learning models were further constructed through midkine and related genes to predict Idiopathic pulmonary fibrosis disease through the bulk gene expression datasets. The midkine score demonstrated a correlation with clinical indexes, and the machine learning model achieved an AUC of 0.94 and 0.86 in the Idiopathic pulmonary fibrosis classification task based on lung tissue samples and peripheral blood mononuclear cell samples, respectively. Our findings offer valuable insights into the pathogenesis of Idiopathic pulmonary fibrosis, providing new therapeutic directions and target genes for further investigation.
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Affiliation(s)
- Shichen Zhang
- Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resources and Eco-Environment, College of Life Sciences, Sichuan University, Chengdu, China
| | - Lanlan Zhang
- State Key Laboratory of Respiratory Health and Multimorbidity, Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Lu Wang
- Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resources and Eco-Environment, College of Life Sciences, Sichuan University, Chengdu, China
| | - Hongqiu Wang
- Systems Hub, The Hong Kong University of Science and Technology (Guangzhou), Guangzhou, China
| | - Jiaxin Wu
- Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resources and Eco-Environment, College of Life Sciences, Sichuan University, Chengdu, China
| | - Haoyang Cai
- Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resources and Eco-Environment, College of Life Sciences, Sichuan University, Chengdu, China
| | - Chunheng Mo
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Jian Yang
- Center of Growth, Metabolism, and Aging, Key Laboratory of Bio-Resources and Eco-Environment, College of Life Sciences, Sichuan University, Chengdu, China
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Xi Y, Ge Y, Hu D, Xia T, Chen J, Zhang C, Cui Y, Xiao H. Caveolin-1 scaffolding domain peptide prevents corpus cavernosum fibrosis and erectile dysfunction in bilateral cavernous nerve injury-induced rats. J Sex Med 2023; 20:1274-1284. [PMID: 37724695 DOI: 10.1093/jsxmed/qdad108] [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: 04/20/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 09/21/2023]
Abstract
BACKGROUND Corpus cavernosum (CC) fibrosis significantly contributes to post-radical prostatectomy erectile dysfunction (pRP-ED). Caveolin-1 scaffolding domain (CSD)-derived peptide has gained significant concern as a potent antagonist of tissue fibrosis. However, applying CSD peptide on bilateral cavernous nerve injury (BCNI)-induced rats remains uninvestigated. AIM The aim was to explore the therapeutic outcome and underlying mechanism of CSD peptide for preventing ED in BCNI rats according to the hypothesis that CSD peptide may exert beneficial effects on erectile tissue and function following BCNI through limiting collagen synthesis in CC smooth muscle cells (CCSMCs) and CC fibrosis. METHODS After completing a random assignment of male Sprague Dawley rats (10 weeks of age), BCNI rats received either saline or CSD peptide treatment, as opposed to sham-operated rats. The evaluations of erectile function (EF) and succedent collection and histological and molecular biological examinations of penile tissue were accomplished 3 weeks postoperatively. In addition, the fibrotic model of CCSMCs was used to further explore the mechanism of CSD peptide action in vitro. OUTCOMES The assessments of EF, SMC/collagen ratio, α-smooth muscle actin, caveolin-1 (CAV1), and profibrotic indicators expressions were conducted. RESULTS BCNI rats exhibited significant decreases in EF, SMC/collagen ratio, α-SMA, and CAV1 levels, and increases in collagen content together with transforming growth factor (TGF)-β1/Smad2 activity. However, impaired EF, activated CC fibrosis, and Smad2 signaling were attenuated after 3 weeks of CSD peptide treatment in BCNI rats. In vitro, TGF-β1-induced CCSMCs underwent fibrogenetic transformation characterized by lower expression of CAV1, higher collagen composition, and phosphorylation of Smad2; then, the delivery of CSD peptide could significantly block CCSMC fibrosis by inactivating Smad2 signaling. CLINICAL IMPLICATIONS Based on available evidence of CSD peptide in the prevention of ED in BCNI rats, this study can aid in the development and clinical application of CSD peptide targeting pRP-ED. STRENGTHS AND LIMITATIONS This study provides data to suggest that CSD peptide protects against BCNI-induced deleterious alterations in EF and CC tissues. However, the available evidence still does not fully clarify the detailed mechanism of action of CSD peptide. CONCLUSION Administration of CSD peptide significantly retarded collagen synthesis in CCSMCs, limited CC fibrosis, and prevented ED via confrontation of TGF-β1/Smad signaling in BCNI rats.
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Affiliation(s)
- Yuhang Xi
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 020-510000, China
| | - Yunlong Ge
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 020-510000, China
| | - Daoyuan Hu
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 020-510000, China
- Department of Urology, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 020-510000, China
| | - Tian Xia
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 020-510000, China
| | - Jialiang Chen
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 020-510000, China
| | - Chi Zhang
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 020-510000, China
| | - Yubin Cui
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 020-510000, China
| | - Hengjun Xiao
- Department of Urology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 020-510000, China
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Kasmani MY, Topchyan P, Brown AK, Brown RJ, Wu X, Chen Y, Khatun A, Alson D, Wu Y, Burns R, Lin CW, Kudek MR, Sun J, Cui W. A spatial sequencing atlas of age-induced changes in the lung during influenza infection. Nat Commun 2023; 14:6597. [PMID: 37852965 PMCID: PMC10584893 DOI: 10.1038/s41467-023-42021-y] [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: 06/06/2022] [Accepted: 09/26/2023] [Indexed: 10/20/2023] Open
Abstract
Influenza virus infection causes increased morbidity and mortality in the elderly. Aging impairs the immune response to influenza, both intrinsically and because of altered interactions with endothelial and pulmonary epithelial cells. To characterize these changes, we performed single-cell RNA sequencing (scRNA-seq), spatial transcriptomics, and bulk RNA sequencing (bulk RNA-seq) on lung tissue from young and aged female mice at days 0, 3, and 9 post-influenza infection. Our analyses identified dozens of key genes differentially expressed in kinetic, age-dependent, and cell type-specific manners. Aged immune cells exhibited altered inflammatory, memory, and chemotactic profiles. Aged endothelial cells demonstrated characteristics of reduced vascular wound healing and a prothrombotic state. Spatial transcriptomics identified novel profibrotic and antifibrotic markers expressed by epithelial and non-epithelial cells, highlighting the complex networks that promote fibrosis in aged lungs. Bulk RNA-seq generated a timeline of global transcriptional activity, showing increased expression of genes involved in inflammation and coagulation in aged lungs. Our work provides an atlas of high-throughput sequencing methodologies that can be used to investigate age-related changes in the response to influenza virus, identify novel cell-cell interactions for further study, and ultimately uncover potential therapeutic targets to improve health outcomes in the elderly following influenza infection.
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Affiliation(s)
- Moujtaba Y Kasmani
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Paytsar Topchyan
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Ashley K Brown
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Ryan J Brown
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Xiaopeng Wu
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Yao Chen
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Achia Khatun
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Donia Alson
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Yue Wu
- Carter Immunology Center, University of Virginia, Charlottesville, VA, 22908, USA
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA, 22908, USA
| | - Robert Burns
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Chien-Wei Lin
- Department of Biostatistics, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Matthew R Kudek
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Jie Sun
- Carter Immunology Center, University of Virginia, Charlottesville, VA, 22908, USA
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA, 22908, USA
| | - Weiguo Cui
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA.
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA.
- Department of Pathology, Northwestern University, Chicago, IL, 60611, USA.
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Yang L, Xiao Y, Ren S. Identification of common genetic features and pathways involved in pulmonary lymphangioleiomyomatosis and ER-positive breast cancer. Medicine (Baltimore) 2023; 102:e34810. [PMID: 37773865 PMCID: PMC10545372 DOI: 10.1097/md.0000000000034810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 07/27/2023] [Indexed: 10/01/2023] Open
Abstract
Accumulating evidence suggests that patients with pulmonary lymphangioleiomyomatosis (PLAM) have a markedly higher prevalence of breast cancer (BC) than the general population. However, the underlying pathophysiological mechanisms remain unclear. Therefore, in this study, we employed a bioinformatics approach to understand the association between PLAM and estrogen receptor (ER)-positive BC. The PLAM (GSE12027) and ER-positive BC (GSE42568, GSE29044, and GSE29431) datasets were obtained from the Gene Expression Omnibus database, and GEO2R was used to identify common differentially expressed genes (DEGs) between them. Functional annotation was performed, and a protein-protein interaction (PPI) network was constructed. Hub genes were identified and verified using western blotting and immunohistochemistry. We conducted an immune infiltration analysis; based on the results, selected 102 common DEGs for follow-up analysis. Functional analyses revealed that the DEGs were mostly enriched in cell proliferation, gene expression regulation, and tumor-related pathways. Four hub genes-ESR1, IL6, PLA2G4A, and CAV1-were further analyzed, and CAV1 was revealed to be associated with clinical outcomes and immune infiltration in ER-positive BC. This study proposes a common, possible pathogenesis of PLAM and ER-positive BC. These common pathways and pivotal genes may provide new directions for further mechanistic studies.
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Affiliation(s)
- Lulu Yang
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Ying Xiao
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Siying Ren
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, China
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Abd-Elmawla MA, Ghaiad HR, Gad ES, Ahmed KA, Abdelmonem M. Suppression of NLRP3 inflammasome by ivermectin ameliorates bleomycin-induced pulmonary fibrosis. J Zhejiang Univ Sci B 2023; 24:723-733. [PMID: 37551558 PMCID: PMC10423969 DOI: 10.1631/jzus.b2200385] [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: 07/31/2022] [Accepted: 12/11/2022] [Indexed: 07/11/2023]
Abstract
Ivermectin is a US Food and Drug Administration (FDA)-approved antiparasitic agent with antiviral and anti-inflammatory properties. Although recent studies reported the possible anti-inflammatory activity of ivermectin in respiratory injuries, its potential therapeutic effect on pulmonary fibrosis (PF) has not been investigated. This study aimed to explore the ability of ivermectin (0.6 mg/kg) to alleviate bleomycin-induced biochemical derangements and histological changes in an experimental PF rat model. This can provide the means to validate the clinical utility of ivermectin as a treatment option for idiopathic PF. The results showed that ivermectin mitigated the bleomycin-evoked pulmonary injury, as manifested by the reduced infiltration of inflammatory cells, as well as decreased the inflammation and fibrosis scores. Intriguingly, ivermectin decreased collagen fiber deposition and suppressed transforming growth factor-β1 (TGF-β1) and fibronectin protein expression, highlighting its anti-fibrotic activity. This study revealed for the first time that ivermectin can suppress the nucleotide-binding oligomerization domain (NOD)-like receptor family pyrin domain-containing protein 3 (NLRP3) inflammasome, as manifested by the reduced gene expression of NLRP3 and the apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), with a subsequent decline in the interleukin-1β (IL-1β) level. In addition, ivermectin inhibited the expression of intracellular nuclear factor-κB (NF-κB) and hypoxia‑inducible factor‑1α (HIF-1α) proteins along with lowering the oxidative stress and apoptotic markers. Altogether, this study revealed that ivermectin could ameliorate pulmonary inflammation and fibrosis induced by bleomycin. These beneficial effects were mediated, at least partly, via the downregulation of TGF-β1 and fibronectin, as well as the suppression of NLRP3 inflammasome through modulating the expression of HIF‑1α and NF-κB.
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Affiliation(s)
- Mai A Abd-Elmawla
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt.
| | - Heba R Ghaiad
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt.
| | - Enas S Gad
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Sinai University, Ismailia 45511, Egypt
| | - Kawkab A Ahmed
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Cairo 12211, Egypt
| | - Maha Abdelmonem
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
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7
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Becker L, Lu CE, Montes-Mojarro IA, Layland SL, Khalil S, Nsair A, Duffy GP, Fend F, Marzi J, Schenke-Layland K. Raman microspectroscopy identifies fibrotic tissues in collagen-related disorders via deconvoluted collagen type I spectra. Acta Biomater 2023; 162:278-291. [PMID: 36931422 DOI: 10.1016/j.actbio.2023.03.016] [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: 11/23/2022] [Revised: 02/28/2023] [Accepted: 03/09/2023] [Indexed: 03/18/2023]
Abstract
Fibrosis is a consequence of the pathological remodeling of extracellular matrix (ECM) structures in the connective tissue of an organ. It is often caused by chronic inflammation, which over time, progressively leads to an excess deposition of collagen type I (COL I) that replaces healthy tissue structures, in many cases leaving a stiff scar. Increasing fibrosis can lead to organ failure and death; therefore, developing methods that potentially allow real-time monitoring of early onset or progression of fibrosis are highly valuable. In this study, the ECM structures of diseased and healthy human tissue from multiple organs were investigated for the presence of fibrosis using routine histology and marker-independent Raman microspectroscopy and Raman imaging. Spectral deconvolution of COL I Raman spectra allowed the discrimination of fibrotic and non-fibrotic COL I fibers. Statistically significant differences were identified in the amide I region of the spectral subpeak at 1608 cm-1, which was deemed to be representative for structural changes in COL I fibers in all examined fibrotic tissues. Raman spectroscopy-based methods in combination with this newly discovered spectroscopic biomarker potentially offer a diagnostic approach to non-invasively track and monitor the progression of fibrosis. STATEMENT OF SIGNIFICANCE: Current diagnosis of fibrosis still relies on histopathological examination with invasive biopsy procedures. Although, several non-invasive imaging techniques such as positron emission tomography, single-photon emission computed tomography and second harmonic generation are gradually employed in preclinical or clinical studies, these techniques are limited in spatial resolution and the morphological interpretation highly relies on individual experience and knowledge. In this study, we propose a non-destructive technique, Raman microspectroscopy, to discriminate fibrotic changes of collagen type I based on a molecular biomarker. The changes of the secondary structure of collagen type I can be identified by spectral deconvolution, which potentially can provide an automatic diagnosis for fibrotic tissues in the clinical applicaion.
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Affiliation(s)
- Lucas Becker
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Silcherstr. 7/1, Eberhard Karls University, 72076 Tübingen, Germany; Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", Eberhard Karls University, Tübingen, Germany
| | - Chuan-En Lu
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Silcherstr. 7/1, Eberhard Karls University, 72076 Tübingen, Germany
| | | | - Shannon L Layland
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Silcherstr. 7/1, Eberhard Karls University, 72076 Tübingen, Germany
| | - Suzan Khalil
- Department of Medicine/Cardiology, Cardiovascular Research Laboratories, David Geffen School of Medicine at UCLA, 675 Charles E. Young Drive South, MRL 3645 Los Angeles, CA, USA
| | - Ali Nsair
- Department of Medicine/Cardiology, Cardiovascular Research Laboratories, David Geffen School of Medicine at UCLA, 675 Charles E. Young Drive South, MRL 3645 Los Angeles, CA, USA
| | - Garry P Duffy
- Anatomy & Regenerative Medicine Institute, School of Medicine, College of Medicine, Nursing and Health Sciences, National University of Ireland Galway, H91 TK33, Galway, Ireland
| | - Falko Fend
- Institute of Pathology and Neuropathology, University Hospital Tübingen, Tübingen, Germany
| | - Julia Marzi
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Silcherstr. 7/1, Eberhard Karls University, 72076 Tübingen, Germany; Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", Eberhard Karls University, Tübingen, Germany; NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, 72770 Reutlingen, Germany
| | - Katja Schenke-Layland
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Silcherstr. 7/1, Eberhard Karls University, 72076 Tübingen, Germany; Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", Eberhard Karls University, Tübingen, Germany; NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, 72770 Reutlingen, Germany.
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8
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Loo JH, Wang Z, Chong RS. Caveolin-1 in vascular health and glaucoma: A critical vascular regulator and potential therapeutic target. Front Med (Lausanne) 2023; 10:1087123. [PMID: 36760400 PMCID: PMC9902660 DOI: 10.3389/fmed.2023.1087123] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 01/04/2023] [Indexed: 01/25/2023] Open
Abstract
Caveolin-1 (Cav-1) is an integral scaffolding membrane protein found in most cell types. Cav-1 has been found to contribute significantly to ocular function, with mutations of Cav-1 being associated with a genetic risk of glaucoma development. Raised intraocular pressure (IOP) is a major modifiable risk factor for glaucoma. Cav-1 may be involved in both IOP-dependent and independent mechanisms involving vascular dysregulation. Systemic vascular diseases including hypertension, diabetes and hyperlipidaemia, have been shown to be associated with glaucoma development. Cav-1 is closely interlinked with endothelial nitric oxide synthase pathways that mediate vascular function and prevent cardiovascular diseases. Endothelial nitric oxide synthase and endothelin-1 are key vasoactive molecules expressed in retinal blood vessels that function to autoregulate ocular blood flow (OBF). Disruptions in the homeostasis of OBF have led to a growing concept of impaired neurovascular coupling in glaucoma. The imbalance between perfusion and neuronal stimulation arising from Cav-1 depletion may result in relative ischemia of the optic nerve head and glaucomatous injury. OBF is also governed by circadian variation in IOP and systemic blood pressure (BP). Cav-1 has been shown to influence central BP variability and other circadian rhythms such as the diurnal phagolysosomal digestion of photoreceptor fragments and toxic substrates to maintain ocular health. Overall, the vast implications of Cav-1 on various ocular mechanisms leading to glaucoma suggest a potential for new therapeutics to enhance Cav-1 expression, which has seen success in other neurodegenerative diseases.
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Affiliation(s)
- Jing Hong Loo
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | | | - Rachel S. Chong
- Glaucoma Department, Singapore National Eye Center, Singapore, Singapore,Ocular Imaging Department, Singapore Eye Research Institute, Singapore, Singapore,*Correspondence: Rachel S. Chong ✉
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9
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Itano J, Taniguchi A, Senoo S, Asada N, Gion Y, Egusa Y, Guo L, Oda N, Araki K, Sato Y, Toyooka S, Kiura K, Maeda Y, Miyahara N. Neuropeptide Y Antagonizes Development of Pulmonary Fibrosis through IL-1β Inhibition. Am J Respir Cell Mol Biol 2022; 67:654-665. [PMID: 36122332 DOI: 10.1165/rcmb.2021-0542oc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Neuropeptide Y (NPY), a 36 amino acid residue polypeptide distributed throughout the nervous system, acts on various immune cells in many organs, including the respiratory system. However, little is known about its role in the pathogenesis of pulmonary fibrosis. This study was performed to determine the effects of NPY on pulmonary fibrosis. NPY-deficient and wild-type mice were intratracheally administered bleomycin. Inflammatory cells, cytokine concentrations, and morphological morphometry of the lungs were analyzed. Serum NPY concentrations were also measured in patients with idiopathic pulmonary fibrosis and healthy control subjects. NPY-deficient mice exhibited significantly enhanced pulmonary fibrosis and higher IL-1β concentrations in the lungs compared with wild-type mice. Exogenous NPY treatment suppressed the development of bleomycin-induced lung fibrosis and decreased IL-1β concentrations in the lungs. Moreover, IL-1β neutralization in NPY-deficient mice attenuated the fibrotic changes. NPY decreased IL-1β release, and Y1 receptor antagonists inhibited IL-1β release and induced epithelial-mesenchymal transition in human alveolar epithelial cells. Patients with idiopathic pulmonary fibrosis had lower NPY and greater IL-1β concentrations in the serums compared with healthy control subjects. NPY expression was mainly observed around bronchial epithelial cells in human idiopathic pulmonary fibrosis lungs. These data suggest that NPY plays a protective role against pulmonary fibrosis by suppressing IL-1β release, and manipulating the NPY-Y1 receptor axis could be a potential therapeutic strategy for delaying disease progression.
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Affiliation(s)
- Junko Itano
- Department of Hematology, Oncology and Respiratory Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Akihiko Taniguchi
- Department of Hematology, Oncology and Respiratory Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.,Department of Allergy and Respiratory Medicine, Okayama University Hospital, Okayama, Japan
| | - Satoru Senoo
- Department of Hematology, Oncology and Respiratory Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Noboru Asada
- Department of Hematology and Oncology, Okayama University Hospital, Okayama, Japan
| | - Yuka Gion
- Department of Medical Technology, Okayama University Graduate School of Health Sciences, Okayama, Japan
| | - Yuria Egusa
- Department of Medical Technology, Okayama University Graduate School of Health Sciences, Okayama, Japan
| | - Lili Guo
- Department of Medical Technology, Okayama University Graduate School of Health Sciences, Okayama, Japan
| | - Naohiro Oda
- Department of Hematology, Oncology and Respiratory Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kota Araki
- Department of General Thoracic Surgery, Breast and Endocrinological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yasuharu Sato
- Department of Medical Technology, Okayama University Graduate School of Health Sciences, Okayama, Japan
| | - Shinichi Toyooka
- Department of General Thoracic Surgery, Breast and Endocrinological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Katsuyuki Kiura
- Department of Allergy and Respiratory Medicine, Okayama University Hospital, Okayama, Japan
| | - Yoshinobu Maeda
- Department of Hematology, Oncology and Respiratory Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Nobuaki Miyahara
- Department of Allergy and Respiratory Medicine, Okayama University Hospital, Okayama, Japan.,Department of Medical Technology, Okayama University Graduate School of Health Sciences, Okayama, Japan
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10
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Fyn-kinase and caveolin-1 in the alveolar epithelial junctional adherence complex contribute to the early stages of pulmonary fibrosis. Eur J Pharm Sci 2022; 175:106236. [PMID: 35710078 DOI: 10.1016/j.ejps.2022.106236] [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: 01/26/2022] [Revised: 06/03/2022] [Accepted: 06/11/2022] [Indexed: 11/23/2022]
Abstract
Current pathophysiological findings indicate that damage to the alveolar epithelium plays a decisive role in the development of idiopathic pulmonary fibrosis (IPF). The available pharmacological interventions (i.e., oral pirfenidone and nintedanib) only slow down progression of the disease, but do not offer a cure. In order to develop new drug candidates, the pathophysiology of IPF needs to be better understood on a molecular level. It has previously been reported that a loss of caveolin-1 (Cav-1) contributes to profibrotic processes by causing reduced alveolar barrier function and fibrosis-like alterations of the lung-parenchyma. Conversely, overexpression of caveolin-1 appears to counteract the development of fibrosis by inhibiting the inflammasome NLRP3 and the associated expression of interleukin-1β. In this study, the interaction between Fyn-kinase and caveolin-1 in the alveolar epithelium of various bleomycin (BLM)/TGF-β damage models using precision-cut lung slices (PCLS), wildtype (WT) and caveolin-1 knockout (KO) mice as well as the human NCI-H441 cell line, were investigated. In WT mouse lung tissues, strong signals for Fyn-kinase were detected in alveolar epithelial type I cells, whereas in caveolin-1 KO animals, expression shifted to alveolar epithelial type II cells. Caveolin-1 and Fyn-kinase were found to be co-localized in isolated lipid rafts of NCI-H441 cell membrane fractions. These findings were corroborated by co-immunoprecipitation studies in which a co-localization of Cav-1 and Fyn-kinase was detected in the cell membrane of the alveolar epithelium. After TGF-β and BLM-induced damage to the alveolar epithelium both in PCLS and cell culture experiments, a decrease in caveolin-1 and Fyn-kinase was found. Furthermore, TEER (transepithelial electrical resistance) measurements indicated that TGF-β and BLM have a damaging effect on cell-cell contacts and thus impair the barrier function in NCI-H441 cell monolayers. This effect was attenuated after co-incubation with the Fyn-kinase inhibitor, PP-2. Our data suggest an involvement of Fyn-kinase and caveolin-1 in TGF-β/bleomycin-induced impairment of alveolar barrier function and thus a possible role in the early stages of pulmonary fibrosis. Fyn-kinase and/or its complex with caveolin-1 might, therefore, be novel therapeutic targets in IPF.
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11
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Popov LD. Deciphering the relationship between caveolae-mediated intracellular transport and signalling events. Cell Signal 2022; 97:110399. [PMID: 35820545 DOI: 10.1016/j.cellsig.2022.110399] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/02/2022] [Accepted: 07/05/2022] [Indexed: 11/30/2022]
Abstract
The caveolae-mediated transport across polarized epithelial cell barriers has been largely deciphered in the last decades and is considered the second essential intracellular transfer mechanism, after the clathrin-dependent endocytosis. The basic cell biology knowledge was supplemented recently, with the molecular mechanisms beyond caveolae generation implying the key contribution of the lipid-binding proteins (the structural protein Caveolin and the adapter protein Cavin), along with the bulb coat stabilizing molecules PACSIN-2 and Eps15 homology domain protein-2. The current attention is focused also on caveolae architecture (such as the bulb coat, the neck, the membrane funnel inside the bulb, and the associated receptors), and their specific tasks during the intracellular transport of various cargoes. Here, we resume the present understanding of the assembly, detachment, and internalization of caveolae from the plasma membrane lipid raft domains, and give an updated view on transcytosis and endocytosis, the two itineraries of cargoes transport via caveolae. The review adds novel data on the signalling molecules regulating caveolae intracellular routes and on the transport dysregulation in diseases. The therapeutic possibilities offered by exploitation of Caveolin-1 expression and caveolae trafficking, and the urgent issues to be uncovered conclude the review.
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Affiliation(s)
- Lucia-Doina Popov
- Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, 8, B.P. Hasdeu Street, 050568 Bucharest, Romania.
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12
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Garcia-Vilanova A, Olmo-Fontánez AM, Moliva JI, Allué-Guardia A, Singh H, Merritt RE, Maselli DJ, Peters JI, Restrepo BI, Wang Y, Schlesinger LS, Turner J, Weintraub ST, Torrelles JB. The aging human lung mucosa: A proteomics study. J Gerontol A Biol Sci Med Sci 2022; 77:1969-1974. [PMID: 35460553 PMCID: PMC9536443 DOI: 10.1093/gerona/glac091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Indexed: 11/13/2022] Open
Abstract
The older adult population, estimated to double by 2050, is at increased risk of respiratory infections and other pulmonary diseases. Biochemical changes in the lung alveolar lining fluid (ALF) and in alveolar compartment cells can alter local immune responses as we age, generating opportunities for invading pathogens to establish successful infections. Indeed, the lung alveolar space of older adults is a pro-inflammatory, pro-oxidative, dysregulated environment that remains understudied. We performed an exploratory, quantitative proteomic profiling of the soluble proteins present in ALF, developing insight into molecular fingerprints, pathways, and regulatory networks that characterize the alveolar space in old age, comparing it to that of younger individuals. We identified 457 proteins that were significantly differentially expressed in older adult ALF, including increased production of matrix metalloproteinases, markers of cellular senescence, antimicrobials, and proteins of neutrophilic granule origin, among others, suggesting that neutrophils in the lungs of older adults could be potential contributors to the dysregulated alveolar environment with increasing age. Finally, we describe a hypothetical regulatory network mediated by the Serum Response Factor that could explain the neutrophilic profile observed in the older adult population.
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Affiliation(s)
- Andreu Garcia-Vilanova
- Population Health and Host Pathogen Interactions Programs, Texas Biomedical Research Institute, San Antonio, TX
| | - Angélica M Olmo-Fontánez
- Population Health and Host Pathogen Interactions Programs, Texas Biomedical Research Institute, San Antonio, TX.,Integrated Biomedical Sciences Program, The University of Texas Health Science Center at San Antonio, TX
| | - Juan I Moliva
- Vaccine Research Center; National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Anna Allué-Guardia
- Population Health and Host Pathogen Interactions Programs, Texas Biomedical Research Institute, San Antonio, TX
| | - Harjinder Singh
- Division of Pulmonary and Critical Care Medicine, School of Medicine, UT-Health SA, San Antonio, TX
| | - Robert E Merritt
- Department of Surgery, College of Medicine, The Ohio State University, Columbus OH
| | - Diego J Maselli
- Division of Pulmonary and Critical Care Medicine, School of Medicine, UT-Health SA, San Antonio, TX
| | - Jay I Peters
- Division of Pulmonary and Critical Care Medicine, School of Medicine, UT-Health SA, San Antonio, TX
| | | | - Yufeng Wang
- Department of Molecular Microbiology and Immunology, South Texas Center for Emerging Infectious Diseases, UTSA, San Antonio, TX
| | - Larry S Schlesinger
- Population Health and Host Pathogen Interactions Programs, Texas Biomedical Research Institute, San Antonio, TX
| | - Joanne Turner
- Population Health and Host Pathogen Interactions Programs, Texas Biomedical Research Institute, San Antonio, TX
| | - Susan T Weintraub
- Department of Biochemistry and Structural Biology, UT-Health SA, San Antonio, TX
| | - Jordi B Torrelles
- Population Health and Host Pathogen Interactions Programs, Texas Biomedical Research Institute, San Antonio, TX
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13
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Song Z, Wang L, Cao Y, Liu Z, Zhang M, Zhang Z, Jiang S, Fan R, Hao T, Yang R, Wang B, Guan Z, Zhu L, Liu Z, Zhang S, Zhao L, Xu Z, Xu H, Dai G. Isoandrographolide inhibits NLRP3 inflammasome activation and attenuates silicosis in mice. Int Immunopharmacol 2022; 105:108539. [DOI: 10.1016/j.intimp.2022.108539] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/30/2021] [Accepted: 01/10/2022] [Indexed: 11/05/2022]
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14
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Yin D, Qiu J, Hu S, Cheng L, Li H, Cheng X, Wang S, Lu J. CAV1 is a prognostic predictor for patients with idiopathic pulmonary fibrosis and lung cancer. J Biosci 2022. [DOI: 10.1007/s12038-021-00245-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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He J, Li X, Yu M. Bioinformatics Analysis Identifies Potential Ferroptosis Key Genes in the Pathogenesis of Pulmonary Fibrosis. Front Genet 2022; 12:788417. [PMID: 35069688 PMCID: PMC8770739 DOI: 10.3389/fgene.2021.788417] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 12/20/2021] [Indexed: 12/17/2022] Open
Abstract
Objective: Ferroptosis has an important role in developing pulmonary fibrosis. The present project aimed to identify and validate the potential ferroptosis-related genes in pulmonary fibrosis by bioinformatics analyses and experiments. Methods: First, the pulmonary fibrosis tissue sequencing data were obtained from Gene Expression Omnibus (GEO) and FerrDb databases. Bioinformatics methods were used to analyze the differentially expressed genes (DEGs) between the normal control group and the pulmonary fibrosis group and extract ferroptosis-related DEGs. Hub genes were screened by enrichment analysis, protein-protein interaction (PPI) analysis, and random forest algorithm. Finally, mouse pulmonary fibrosis model was made for performing an exercise intervention and the hub genes’ expression was verified through qRT-PCR. Results: 13 up-regulated genes and 7 down-regulated genes were identified as ferroptosis-related DEGs by comparing 103 lung tissues with idiopathic pulmonary fibrosis (IPF) and 103 normal lung tissues. PPI results indicated the interactions among these ferroptosis-related genes. Kyoto Encyclopedia of Genes and Genomes (KEGG) Pathway enrichment and Genome-Ontology (GO) enrichment analyses showed that these ferroptosis-related genes involved in the organic anion transport, response to hypoxia, response to decrease oxygen level, HIF-1 signaling pathway, renal cell carcinoma, and arachidonic acid metabolism signaling pathway. The confirmed genes using PPI analysis and random forest algorithm included CAV1, NOS2, GDF15, HNF4A, and CDKN2A. qRT-PCR of the fibrotic lung tissues from the mouse model showed that the mRNA levels of NOS2 and GDF15 were up-regulated, while CAV1 and CDKN2A were down-regulated. Also, treadmill training led to an increased expression of CAV1 and CDKN2A and a decrease in the expression of NOS2 and GDF15. Conclusion: Using bioinformatics analysis, 20 potential genes were identified to be associated with ferroptosis in pulmonary fibrosis. CAV1, NOS2, GDF15, and CDKN2A were demonstrated to be influencing the development of pulmonary fibrosis by regulating ferroptosis. These findings suggested that, as an aerobic exercise treatment, treadmill training reduced ferroptosis in the pulmonary fibrosis tissues, and thus, reduces inflammation in the lungs. Aerobic exercise training initiate concomitantly with induction of pulmonary fibrosis reduces ferroptosis in lung. These results may develop our knowledge about pulmonary fibrosis and may contribute to its treatment.
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Affiliation(s)
- Jie He
- Clinical Medical College of Chengdu Medical College, Chengdu, China.,Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Xiaoyan Li
- Clinical Medical College of Chengdu Medical College, Chengdu, China.,Department of Endocrinology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Mi Yu
- Clinical Medical College of Chengdu Medical College, Chengdu, China.,Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
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16
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He R, Yuan X, Lv X, Liu Q, Tao L, Meng J. Caveolin-1 negatively regulates inflammation and fibrosis in silicosis. J Cell Mol Med 2021; 26:99-107. [PMID: 34889029 PMCID: PMC8742238 DOI: 10.1111/jcmm.17045] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 09/30/2021] [Accepted: 10/24/2021] [Indexed: 11/28/2022] Open
Abstract
Inhalation of crystalline silica causes silicosis, the most common and serious occupational disease, which is characterized by progressive lung inflammation and fibrosis. Recent studies revealed the anti-inflammatory and anti-fibrosis role of Caveolin-1 (Cav-1) in lung, but this role in silicosis has not been investigated. Thus, this study evaluated Cav-1 regulatory effects in silicosis. It was found that Cav-1 levels were significantly reduced in the lung from silicosis patients and silicotic mice. The silicosis models were established in C57BL/6 (wild-type) and Cav-1 deficiency (Cav-1-/- ) mice, and Cav-1-/- mice displayed wider alveolar septa, increased collagen deposition and more silicotic nodules. The mice peritoneal-derived macrophages were used to explore the role of Cav-1 in silica-induced inflammation, which plays a central role in mechanism of silicosis. Cav-1 inhibited silica-induced infiltration of inflammatory cells and secretion of inflammatory factors in vitro and in vivo, partly by downregulating NF-κB pathway. Additionally, silica uptake and expression of 4-hydroxynonenal in silicotic mice were observed, and it was found that Cav-1 absence triggered excessive silica deposition, causing a stronger oxidative stress response. These findings demonstrate the protective effects of Cav-1 in silica-induced lung injury, suggesting its potential therapeutic value in silicosis.
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Affiliation(s)
- RongLing He
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha, China
| | - XiangNing Yuan
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha, China.,Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Xin Lv
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha, China.,Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - QingXiang Liu
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha, China
| | - LiJian Tao
- Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha, China.,Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Jie Meng
- Department of Pulmonary and Critical Care Medicine, Third Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha, China
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17
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Mathew R. Critical Role of Caveolin-1 Loss/Dysfunction in Pulmonary Hypertension. Med Sci (Basel) 2021; 9:medsci9040058. [PMID: 34698188 PMCID: PMC8544475 DOI: 10.3390/medsci9040058] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/17/2021] [Accepted: 09/16/2021] [Indexed: 02/07/2023] Open
Abstract
Pulmonary hypertension (PH) is a rare disease with a high morbidity and mortality rate. A number of systemic diseases and genetic mutations are known to lead to PH. The main features of PH are altered vascular relaxation responses and the activation of proliferative and anti-apoptotic pathways, resulting in pulmonary vascular remodeling, elevated pulmonary artery pressure, and right ventricular hypertrophy, ultimately leading to right heart failure and premature death. Important advances have been made in the field of pulmonary pathobiology, and several deregulated signaling pathways have been shown to be associated with PH. Clinical and experimental studies suggest that, irrespective of the underlying disease, endothelial cell disruption and/or dysfunction play a key role in the pathogenesis of PH. Endothelial caveolin-1, a cell membrane protein, interacts with and regulates several transcription factors and maintains homeostasis. Disruption of endothelial cells leads to the loss or dysfunction of endothelial caveolin-1, resulting in reciprocal activation of proliferative and inflammatory pathways, leading to cell proliferation, medial hypertrophy, and PH, which initiates PH and facilitates its progression. The disruption of endothelial cells, accompanied by the loss of endothelial caveolin-1, is accompanied by enhanced expression of caveolin-1 in smooth muscle cells (SMCs) that leads to pro-proliferative and pro-migratory responses, subsequently leading to neointima formation. The neointimal cells have low caveolin-1 and normal eNOS expression that may be responsible for promoting nitrosative and oxidative stress, furthering cell proliferation and metabolic alterations. These changes have been observed in human PH lungs and in experimental models of PH. In hypoxia-induced PH, there is no endothelial disruption, loss of endothelial caveolin-1, or enhanced expression of caveolin-1 in SMCs. Hypoxia induces alterations in membrane composition without caveolin-1 or any other membrane protein loss. However, caveolin-1 is dysfunctional, resulting in cell proliferation, medial hypertrophy, and PH. These alterations are reversible upon removal of hypoxia, provided there is no associated EC disruption. This review examined the role of caveolin-1 disruption and dysfunction in PH.
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Affiliation(s)
- Rajamma Mathew
- Section of Pediatric Cardiology, Departments of Pediatrics and Physiology, New York Medical College, Valhalla, NY 10595, USA
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18
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Pang L, Yang S, Dai W, Wu S, Kong J. Role of caveolin-1 in human organ function and disease: friend or foe? Carcinogenesis 2021; 43:2-11. [PMID: 34436568 DOI: 10.1093/carcin/bgab080] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/14/2021] [Accepted: 08/25/2021] [Indexed: 12/13/2022] Open
Abstract
Caveolin-1 (Cav-1) is a structural protein component of caveolae, which are invaginations of the plasma membrane involved in various cellular processes, including endocytosis, extracellular matrix organization, cholesterol distribution, cell migration, and signaling. Mounting evidence over the last 10-15 years has demonstrated a central role of Cav-1 in many diseases, such as cancer, diabetes, and fibrosis. Cav-1 plays positive and negative roles in various diseases through its different regulation pathways. Here, we review the current knowledge on Cav-1 in different diseases and discuss the role of this protein in human organs and diseases.
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Affiliation(s)
- Liwei Pang
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Shaojie Yang
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Wanlin Dai
- Innovation Institute of China Medical University, Shenyang, Liaoning, China
| | - Shuodong Wu
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jing Kong
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
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19
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Zuo S, Wang B, Liu J, Kong D, Cui H, Jia Y, Wang C, Xu X, Chen G, Wang Y, Yang L, Zhang K, Ai D, Du J, Shen Y, Yu Y. ER-anchored CRTH2 antagonizes collagen biosynthesis and organ fibrosis via binding LARP6. EMBO J 2021; 40:e107403. [PMID: 34223653 PMCID: PMC8365266 DOI: 10.15252/embj.2020107403] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 05/11/2021] [Accepted: 05/20/2021] [Indexed: 02/06/2023] Open
Abstract
Excessive deposition of extracellular matrix, mainly collagen protein, is the hallmark of organ fibrosis. The molecular mechanisms regulating fibrotic protein biosynthesis are unclear. Here, we find that chemoattractant receptor homologous molecule expressed on TH2 cells (CRTH2), a plasma membrane receptor for prostaglandin D2, is trafficked to the endoplasmic reticulum (ER) membrane in fibroblasts in a caveolin-1-dependent manner. ER-anchored CRTH2 binds the collagen mRNA recognition motif of La ribonucleoprotein domain family member 6 (LARP6) and promotes the degradation of collagen mRNA in these cells. In line, CRTH2 deficiency increases collagen biosynthesis in fibroblasts and exacerbates injury-induced organ fibrosis in mice, which can be rescued by LARP6 depletion. Administration of CRTH2 N-terminal peptide reduces collagen production by binding to LARP6. Similar to CRTH2, bumetanide binds the LARP6 mRNA recognition motif, suppresses collagen biosynthesis, and alleviates bleomycin-triggered pulmonary fibrosis in vivo. These findings reveal a novel anti-fibrotic function of CRTH2 in the ER membrane via the interaction with LARP6, which may represent a therapeutic target for fibrotic diseases.
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Affiliation(s)
- Shengkai Zuo
- Tianjin Key Laboratory of Inflammatory BiologyCenter for Cardiovascular DiseasesKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)Department of PharmacologyThe Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjinChina
| | - Bei Wang
- Tianjin Key Laboratory of Inflammatory BiologyCenter for Cardiovascular DiseasesKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)Department of PharmacologyThe Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjinChina
| | - Jiao Liu
- Tianjin Key Laboratory of Inflammatory BiologyCenter for Cardiovascular DiseasesKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)Department of PharmacologyThe Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjinChina
| | - Deping Kong
- Tianjin Key Laboratory of Inflammatory BiologyCenter for Cardiovascular DiseasesKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)Department of PharmacologyThe Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjinChina
| | - Hui Cui
- School of Life Science and TechnologyShanghai Tech UniversityShanghaiChina
| | - Yaonan Jia
- School of Pharmaceutical SciencesZhengzhou UniversityZhengzhouChina
| | - Chenyao Wang
- Department of Inflammation and ImmunityLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - Xin Xu
- Tianjin Key Laboratory of Inflammatory BiologyCenter for Cardiovascular DiseasesKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)Department of PharmacologyThe Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjinChina
| | - Guilin Chen
- Tianjin Key Laboratory of Inflammatory BiologyCenter for Cardiovascular DiseasesKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)Department of PharmacologyThe Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjinChina
| | - Yuanyang Wang
- Tianjin Key Laboratory of Inflammatory BiologyCenter for Cardiovascular DiseasesKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)Department of PharmacologyThe Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjinChina
| | - Linlin Yang
- Department of PharmacologySchool of Basic Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Kai Zhang
- Department of Biochemistry and Molecular BiologySchool of Basic Medical SciencesTianjin Medical UniversityTianjinChina
| | - Ding Ai
- Department of Physiology and PathophysiologySchool of Basic Medical SciencesTianjin Medical UniversityTianjinChina
| | - Jie Du
- Beijing Anzhen Hospital of Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel DiseasesBeijingChina
| | - Yujun Shen
- Tianjin Key Laboratory of Inflammatory BiologyCenter for Cardiovascular DiseasesKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)Department of PharmacologyThe Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjinChina
| | - Ying Yu
- Tianjin Key Laboratory of Inflammatory BiologyCenter for Cardiovascular DiseasesKey Laboratory of Immune Microenvironment and Disease (Ministry of Education)Department of PharmacologyThe Province and Ministry Co‐sponsored Collaborative Innovation Center for Medical EpigeneticsSchool of Basic Medical SciencesTianjin Medical UniversityTianjinChina
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20
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Graustein AD, Berrington WR, Buckingham KJ, Nguyen FK, Joudeh LL, Rosenfeld M, Bamshad MJ, Gibson RL, Hawn TR, Emond MJ. Inflammasome Genetic Variants, Macrophage Function, and Clinical Outcomes in Cystic Fibrosis. Am J Respir Cell Mol Biol 2021; 65:157-166. [PMID: 33848452 DOI: 10.1165/rcmb.2020-0257oc] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Cystic fibrosis (CF) is characterized by chronic airway infection, inflammation, and tissue damage that lead to progressive respiratory failure. NLRP3 and NLRC4 are cytoplasmic pattern recognition receptors that activate the inflammasome, initiating a caspase-1-mediated response. We hypothesized that gain-of-function inflammasome responses are associated with worse outcomes in children with CF. We genotyped nonsynonymous variants in NLRP3 and the NLRC4 pathway from individuals in the EPIC (Early Pseudomonas Infection Control) Observational Study cohort and tested for association with CF outcomes. We generated knockouts of NLRP3 and NLRC4 in human macrophage-like cells and rescued knockouts with wild-type or variant forms of NLRP3 and NLRC4. We identified a SNP in NLRP3, p.(Q705K), that was associated with a higher rate of P. aeruginosa colonization (N = 609; P = 0.01; hazard ratio, 2.3 [Cox model]) and worsened lung function over time as measured by forced expiratory volume in 1 second (N = 445; P = 0.001 [generalized estimating equation]). We identified a SNP in NLRC4, p.(A929S), that was associated with a lower rate of P. aeruginosa colonization as part of a composite of rare variants (N = 405; P = 0.045; hazard ratio, 0.68 [Cox model]) and that was individually associated with protection from lung function decline (P < 0.001 [generalized estimating equation]). Rescue of the NLRP3 knockout with the p.(Q705K) variant produced significantly more IL-1β in response to NLRP3 stimulation than rescue with the wild type (P = 0.020 [Student's t test]). We identified a subset of children with CF at higher risk of early lung disease progression. Knowledge of these genetic modifiers could guide therapies targeting inflammasome pathways.
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Affiliation(s)
| | | | | | | | | | - Margaret Rosenfeld
- Department of Pediatrics, School of Medicine.,Division of Pulmonary and Sleep Medicine and
| | - Michael J Bamshad
- Department of Pediatrics, School of Medicine.,Department of Genome Sciences, and.,Division of Genetic Medicine, Seattle Children's Hospital, Seattle, Washington
| | - Ronald L Gibson
- Department of Pediatrics, School of Medicine.,Division of Pulmonary and Sleep Medicine and
| | | | - Mary J Emond
- Department of Biostatistics, University of Washington, Seattle, Washington; and
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21
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Abstract
Delivery of genetic material to tissues in vivo is an important technique used in research settings and is the foundation upon which clinical gene therapy is built. The lung is a prime target for gene delivery due to a host of genetic, acquired, and infectious diseases that manifest themselves there, resulting in many pathologies. However, the in vivo delivery of genetic material to the lung remains a practical problem clinically and is considered the major obstacle needed to be overcome for gene therapy. Currently there are four main strategies for in vivo gene delivery to the lung: viral vectors, liposomes, nanoparticles, and electroporation. Viral delivery uses several different genetically modified viruses that enter the cell and express desired genes that have been inserted to the viral genome. Liposomes use combinations of charged and neutral lipids that can encapsulate genetic cargo and enter cells through endogenous mechanisms, thereby delivering their cargoes. Nanoparticles are defined by their size (typically less than 100 nm) and are made up of many different classes of building blocks, including biological and synthetic polymers, cell penetrant and other peptides, and dendrimers, that also enter cells through endogenous mechanisms. Electroporation uses mild to moderate electrical pulses to create pores in the cell membrane through which delivered genetic material can enter a cell. An emerging fifth category, exosomes and extracellular vesicles, may have advantages of both viral and non-viral approaches. These extracellular vesicles bud from cellular membranes containing receptors and ligands that may aid cell targeting and which can be loaded with genetic material for efficient transfer. Each of these vectors can be used for different gene delivery applications based on mechanisms of action, side-effects, and other factors, and their use in the lung and possible clinical considerations is the primary focus of this review.
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Affiliation(s)
- Uday K Baliga
- Department of Pediatrics, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
- Department of Pathology, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
| | - David A Dean
- Department of Pediatrics, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
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Rathinasabapathy A, Copeland C, Crabtree A, Carrier EJ, Moore C, Shay S, Gladson S, Austin ED, Kenworthy AK, Loyd JE, Hemnes AR, West JD. Expression of a Human Caveolin-1 Mutation in Mice Drives Inflammatory and Metabolic Defect-Associated Pulmonary Arterial Hypertension. Front Med (Lausanne) 2020; 7:540. [PMID: 33015095 PMCID: PMC7516012 DOI: 10.3389/fmed.2020.00540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 07/30/2020] [Indexed: 12/20/2022] Open
Abstract
Background: In 2012, mutations in Cav1 were found to be the driving mutation in several cases of heritable pulmonary arterial hypertension (PAH). These mutations replaced the last 21 amino acids of Cav1 with a novel 22-amino-acid sequence. Because previously only Cav1 knockouts had been studied in the context of PAH, examining the in vivo effects of this novel mutation holds promise for new understanding of the role of Cav1 in disease etiology. Methods: The new 22 amino acids created by the human mutation were knocked into the native mouse Cav1 locus. The mice underwent hemodynamic, energy balance, and inflammatory measurements, both at baseline and after being stressed with either a metabolic or an inflammatory challenge [low-dose lipopolysaccharide (LPS)]. To metabolically challenge the mice, they were injected with streptozotocin (STZ) and fed a high-fat diet for 12 weeks. Results: Very little mutant protein was found in vivo (roughly 2% of wild-type by mass spectrometry), probably because of degradation after failure to traffic from the endoplasmic reticulum. The homozygous mutants developed a mild, low-penetrance PAH similar to that described previously in knockouts, and neither baseline nor metabolic nor inflammatory stress resulted in pressures above normal in heterozygous animals. The homozygous mutants had increased lean mass and worsened oral glucose tolerance, as previously described in knockouts. Novel findings include the preservation of Cav2 and accessory proteins in the liver and the kidney, while they are lost with homozygous Cav1 mutation in the lungs. We also found that the homozygous mutants had a significantly lower tolerance to voluntary spontaneous exercise than the wild-type mice, with the heterozygous mice at an intermediate level. The mutants also had higher circulating monocytes, with both heterozygous and homozygous animals having higher pulmonary MCP1 and MCP5 proteins. The heterozygous animals also lost weight at an LPS challenge level at which the wild-type mice continued to gain weight. Conclusions: The Cav1 mutation identified in human patients in 2012 is molecularly similar to a knockout of Cav1. It results in not only metabolic deficiencies and mild pulmonary hypertension, as expected, but also an inflammatory phenotype and reduced spontaneous exercise.
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Affiliation(s)
| | - Courtney Copeland
- Pulmonary and Critical Care Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States
| | - Amber Crabtree
- Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Erica J Carrier
- Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Christy Moore
- Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Sheila Shay
- Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Santhi Gladson
- Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Eric D Austin
- Pediatrics, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Anne K Kenworthy
- Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - James E Loyd
- Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Anna R Hemnes
- Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - James D West
- Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
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