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Gomez HM, Haw TJ, Ilic D, Robinson P, Donovan C, Croft AJ, Vanka KS, Small E, Carroll OR, Kim RY, Mayall JR, Beyene T, Palanisami T, Ngo DTM, Zosky GR, Holliday EG, Jensen ME, McDonald VM, Murphy VE, Gibson PG, Horvat JC. Landscape fire smoke airway exposure impairs respiratory and cardiac function and worsens experimental asthma. J Allergy Clin Immunol 2024; 154:209-221.e6. [PMID: 38513838 DOI: 10.1016/j.jaci.2024.02.022] [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: 05/09/2023] [Revised: 02/13/2024] [Accepted: 02/22/2024] [Indexed: 03/23/2024]
Abstract
BACKGROUND Millions of people are exposed to landscape fire smoke (LFS) globally, and inhalation of LFS particulate matter (PM) is associated with poor respiratory and cardiovascular outcomes. However, how LFS affects respiratory and cardiovascular function is less well understood. OBJECTIVE We aimed to characterize the pathophysiologic effects of representative LFS airway exposure on respiratory and cardiac function and on asthma outcomes. METHODS LFS was generated using a customized combustion chamber. In 8-week-old female BALB/c mice, low (25 μg/m3, 24-hour equivalent) or moderate (100 μg/m3, 24-hour equivalent) concentrations of LFS PM (10 μm and below [PM10]) were administered daily for 3 (short-term) and 14 (long-term) days in the presence and absence of experimental asthma. Lung inflammation, gene expression, structural changes, and lung function were assessed. In 8-week-old male C57BL/6 mice, low concentrations of LFS PM10 were administered for 3 days. Cardiac function and gene expression were assessed. RESULTS Short- and long-term LFS PM10 airway exposure increased airway hyperresponsiveness and induced steroid insensitivity in experimental asthma, independent of significant changes in airway inflammation. Long-term LFS PM10 airway exposure also decreased gas diffusion. Short-term LFS PM10 airway exposure decreased cardiac function and expression of gene changes relating to oxidative stress and cardiovascular pathologies. CONCLUSIONS We characterized significant detrimental effects of physiologically relevant concentrations and durations of LFS PM10 airway exposure on lung and heart function. Our study provides a platform for assessment of mechanisms that underpin LFS PM10 airway exposure on respiratory and cardiovascular disease outcomes.
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Affiliation(s)
- Henry M Gomez
- School of Biomedical Sciences and Pharmacy, University of Newcastle and Immune Health Program, Hunter Medical Research Institute, Newcastle, Australia
| | - Tatt J Haw
- Heart and Stroke Research Program, Hunter Medical Research Institute, New Lambton Heights, Newcastle, Australia; College of Health, Medicine, and Wellbeing, Centre of Excellence Newcastle Cardio-Oncology Research Group, University of Newcastle, Callaghan, Newcastle, Australia
| | - Dusan Ilic
- Newcastle Institute for Energy and Resources, University of Newcastle, Callaghan, Australia
| | - Peter Robinson
- Newcastle Institute for Energy and Resources, University of Newcastle, Callaghan, Australia
| | - Chantal Donovan
- School of Biomedical Sciences and Pharmacy, University of Newcastle and Immune Health Program, Hunter Medical Research Institute, Newcastle, Australia; School of Life Sciences, University of Technology Sydney, Faculty of Science, Sydney, Australia
| | - Amanda J Croft
- Heart and Stroke Research Program, Hunter Medical Research Institute, New Lambton Heights, Newcastle, Australia; College of Health, Medicine, and Wellbeing, Centre of Excellence Newcastle Cardio-Oncology Research Group, University of Newcastle, Callaghan, Newcastle, Australia
| | - Kanth S Vanka
- School of Biomedical Sciences and Pharmacy, University of Newcastle and Immune Health Program, Hunter Medical Research Institute, Newcastle, Australia; Newcastle Institute for Energy and Resources, University of Newcastle, Callaghan, Australia
| | - Ellen Small
- School of Biomedical Sciences and Pharmacy, University of Newcastle and Immune Health Program, Hunter Medical Research Institute, Newcastle, Australia
| | - Olivia R Carroll
- School of Biomedical Sciences and Pharmacy, University of Newcastle and Immune Health Program, Hunter Medical Research Institute, Newcastle, Australia
| | - Richard Y Kim
- School of Biomedical Sciences and Pharmacy, University of Newcastle and Immune Health Program, Hunter Medical Research Institute, Newcastle, Australia; School of Life Sciences, University of Technology Sydney, Faculty of Science, Sydney, Australia
| | - Jemma R Mayall
- School of Biomedical Sciences and Pharmacy, University of Newcastle and Immune Health Program, Hunter Medical Research Institute, Newcastle, Australia
| | - Tesfalidet Beyene
- School of Medicine and Public Health, University of Newcastle and Asthma and Breathing Program, Hunter Medical Research Institute, Newcastle, Australia
| | - Thava Palanisami
- Global Innovative Centre for Advanced Nanomaterials, University of Newcastle, Callaghan, Australia
| | - Doan T M Ngo
- Heart and Stroke Research Program, Hunter Medical Research Institute, New Lambton Heights, Newcastle, Australia; College of Health, Medicine, and Wellbeing, Centre of Excellence Newcastle Cardio-Oncology Research Group, University of Newcastle, Callaghan, Newcastle, Australia
| | - Graeme R Zosky
- Menzies Institute for Medical Research, College of Health and Medicine, University of Tasmania, Hobart, Australia; College of Health and Medicine, Tasmanian School of Medicine, University of Tasmania, Hobart, Australia
| | - Elizabeth G Holliday
- School of Medicine and Public Health, University of Newcastle, Callaghan, Australia
| | - Megan E Jensen
- School of Medicine and Public Health, University of Newcastle and Asthma and Breathing Program, Hunter Medical Research Institute, Newcastle, Australia
| | - Vanessa M McDonald
- School of Medicine and Public Health, University of Newcastle and Asthma and Breathing Program, Hunter Medical Research Institute, Newcastle, Australia
| | - Vanessa E Murphy
- School of Medicine and Public Health, University of Newcastle and Asthma and Breathing Program, Hunter Medical Research Institute, Newcastle, Australia
| | - Peter G Gibson
- School of Medicine and Public Health, University of Newcastle and Asthma and Breathing Program, Hunter Medical Research Institute, Newcastle, Australia
| | - Jay C Horvat
- School of Biomedical Sciences and Pharmacy, University of Newcastle and Immune Health Program, Hunter Medical Research Institute, Newcastle, Australia.
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2
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Koziol-White C, Gebski E, Cao G, Panettieri RA. Precision cut lung slices: an integrated ex vivo model for studying lung physiology, pharmacology, disease pathogenesis and drug discovery. Respir Res 2024; 25:231. [PMID: 38824592 PMCID: PMC11144351 DOI: 10.1186/s12931-024-02855-6] [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: 04/08/2024] [Accepted: 05/18/2024] [Indexed: 06/03/2024] Open
Abstract
Precision Cut Lung Slices (PCLS) have emerged as a sophisticated and physiologically relevant ex vivo model for studying the intricacies of lung diseases, including fibrosis, injury, repair, and host defense mechanisms. This innovative methodology presents a unique opportunity to bridge the gap between traditional in vitro cell cultures and in vivo animal models, offering researchers a more accurate representation of the intricate microenvironment of the lung. PCLS require the precise sectioning of lung tissue to maintain its structural and functional integrity. These thin slices serve as invaluable tools for various research endeavors, particularly in the realm of airway diseases. By providing a controlled microenvironment, precision-cut lung slices empower researchers to dissect and comprehend the multifaceted interactions and responses within lung tissue, thereby advancing our understanding of pulmonary pathophysiology.
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Affiliation(s)
- Cynthia Koziol-White
- Rutgers Institute for Translational Medicine and Science, The State University of NJ, 08901, Rutgers, New Brunswick, NJ, USA.
| | - Eric Gebski
- Rutgers Institute for Translational Medicine and Science, The State University of NJ, 08901, Rutgers, New Brunswick, NJ, USA
| | - Gaoyaun Cao
- Rutgers Institute for Translational Medicine and Science, The State University of NJ, 08901, Rutgers, New Brunswick, NJ, USA
| | - Reynold A Panettieri
- Rutgers Institute for Translational Medicine and Science, The State University of NJ, 08901, Rutgers, New Brunswick, NJ, USA
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3
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Nizamoglu M, Joglekar MM, Almeida CR, Larsson Callerfelt AK, Dupin I, Guenat OT, Henrot P, van Os L, Otero J, Elowsson L, Farre R, Burgess JK. Innovative three-dimensional models for understanding mechanisms underlying lung diseases: powerful tools for translational research. Eur Respir Rev 2023; 32:230042. [PMID: 37495250 PMCID: PMC10369168 DOI: 10.1183/16000617.0042-2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 05/04/2023] [Indexed: 07/28/2023] Open
Abstract
Chronic lung diseases result from alteration and/or destruction of lung tissue, inevitably causing decreased breathing capacity and quality of life for patients. While animal models have paved the way for our understanding of pathobiology and the development of therapeutic strategies for disease management, their translational capacity is limited. There is, therefore, a well-recognised need for innovative in vitro models to reflect chronic lung diseases, which will facilitate mechanism investigation and the advancement of new treatment strategies. In the last decades, lungs have been modelled in healthy and diseased conditions using precision-cut lung slices, organoids, extracellular matrix-derived hydrogels and lung-on-chip systems. These three-dimensional models together provide a wide spectrum of applicability and mimicry of the lung microenvironment. While each system has its own limitations, their advantages over traditional two-dimensional culture systems, or even over animal models, increases the value of in vitro models. Generating new and advanced models with increased translational capacity will not only benefit our understanding of the pathobiology of lung diseases but should also shorten the timelines required for discovery and generation of new therapeutics. This article summarises and provides an outline of the European Respiratory Society research seminar "Innovative 3D models for understanding mechanisms underlying lung diseases: powerful tools for translational research", held in Lisbon, Portugal, in April 2022. Current in vitro models developed for recapitulating healthy and diseased lungs are outlined and discussed with respect to the challenges associated with them, efforts to develop best practices for model generation, characterisation and utilisation of models and state-of-the-art translational potential.
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Affiliation(s)
- Mehmet Nizamoglu
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, The Netherlands
- Both authors contributed equally
| | - Mugdha M Joglekar
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, The Netherlands
- Both authors contributed equally
| | - Catarina R Almeida
- Department of Medical Sciences, Institute of Biomedicine (iBiMED), University of Aveiro, Aveiro, Portugal
| | | | - Isabelle Dupin
- Centre de Recherche Cardio-thoracique de Bordeaux, Université de Bordeaux, Pessac, France
- INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, Pessac, France
| | - Olivier T Guenat
- Organs-on-Chip Technologies, ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
- Department of Pulmonary Medicine, University Hospital of Bern, Bern, Switzerland
- Department of General Thoracic Surgery, University Hospital of Bern, Bern, Switzerland
| | - Pauline Henrot
- Centre de Recherche Cardio-thoracique de Bordeaux, Université de Bordeaux, Pessac, France
- INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, Pessac, France
- Service d'exploration fonctionnelle respiratoire, CHU de Bordeaux, Pessac, France
| | - Lisette van Os
- Organs-on-Chip Technologies, ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Jorge Otero
- Unit of Biophysics and Bioengineering, School of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
- CIBER de Enfermedades Respiratorias, Madrid, Spain
| | - Linda Elowsson
- Lung Biology, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Ramon Farre
- Unit of Biophysics and Bioengineering, School of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
- CIBER de Enfermedades Respiratorias, Madrid, Spain
- Institut Investigacions Biomediques August Pi Sunyer, Barcelona, Spain
| | - Janette K Burgess
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, W.J. Kolff Institute for Biomedical Engineering and Materials Science-FB41, Groningen, The Netherlands
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Lam M, Lamanna E, Organ L, Donovan C, Bourke JE. Perspectives on precision cut lung slices-powerful tools for investigation of mechanisms and therapeutic targets in lung diseases. Front Pharmacol 2023; 14:1162889. [PMID: 37261291 PMCID: PMC10228656 DOI: 10.3389/fphar.2023.1162889] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 04/19/2023] [Indexed: 06/02/2023] Open
Abstract
Precision cut lung slices (PCLS) have emerged as powerful experimental tools for respiratory research. Pioneering studies using mouse PCLS to visualize intrapulmonary airway contractility have been extended to pulmonary arteries and for assessment of novel bronchodilators and vasodilators as therapeutics. Additional disease-relevant outcomes, including inflammatory, fibrotic, and regenerative responses, are now routinely measured in PCLS from multiple species, including humans. This review provides an overview of established and innovative uses of PCLS as an intermediary between cellular and organ-based studies and focuses on opportunities to increase their application to investigate mechanisms and therapeutic targets to oppose excessive airway contraction and fibrosis in lung diseases.
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Affiliation(s)
- Maggie Lam
- Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia
- Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Emma Lamanna
- Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Institut Pasteur, Unit of Antibodies in Therapy and Pathology, INSERM UMR1222, Paris, France
| | - Louise Organ
- Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Chantal Donovan
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
- Hunter Medical Research Institute and The University of Newcastle, Newcastle, NSW, Australia
| | - Jane E. Bourke
- Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia
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5
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Kim D, Hogan JO, White C. TASK inhibition by mild acidosis increases Ca 2+ oscillations to mediate pH sensing in rat carotid body chemoreceptor cells. Am J Physiol Lung Cell Mol Physiol 2023; 324:L259-L270. [PMID: 36692168 PMCID: PMC9970648 DOI: 10.1152/ajplung.00099.2022] [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: 03/28/2022] [Revised: 11/10/2022] [Accepted: 01/14/2023] [Indexed: 01/25/2023] Open
Abstract
Severe levels of acidosis (pH < 6.8) have been shown to cause a sustained rise in cytosolic Ca2+ concentration in carotid body Type 1 (glomus) cells. To understand how physiologically relevant levels of acidosis regulate Ca2+ signaling in glomus cells, we studied the effects of small changes in extracellular pH (pHo) on the kinetics of Ca2+ oscillations. A decrease in pHo from 7.4 to 7.3 (designated mild) and 7.2 (designated moderate) acidosis produced significant increases in the frequency and amplitude of Ca2+ oscillations. These effects of acidosis on Ca2+ oscillations were not blocked by NS383 and amiloride [acid-sensing ion channel (ASIC) inhibitors]. Mild and moderate levels of acidosis, however, caused a small but significant inhibition of two-pore domain acid-sensing K+ channels (TASK) (TASK-1- and TASK-3-like channels) and depolarized the cell by 6-13 mV. Acidosis-induced increase in Ca2+ oscillations was inhibited by nifedipine (1 µM; L-type Cav inhibitor) and by TTA-P2 (20 µM; T-type Cav inhibitor). Mild inhibition of TASK activity by N-[(2,4-difluorophenyl)methyl]-2'-[[[2-(4methoxyphenyl)acetyl]amino]methyl][1,1'-biphenyl]-2-carboxamide (A1899) (0.3 µM) and 1-[1-[6-[[1,1'-biphenyl]-4-ylcarbonyl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine-4-yl]-4-piperidinyl]-1-butanon (PK-THPP) (0.1 µM) increased Ca2+ oscillation frequency to levels similar to those observed with mild-moderate acidosis. Mild acidosis (pHo 7.3) and mild hypoxia (∼5%O2) produced similar levels of changes in the kinetics of Ca2+ oscillations. Block of tetraethylammonium (TEA)-sensitive Kv channels did not affect acid-induced increase in Ca2+ oscillations. Our study shows that mild and moderate levels of acidosis increase the frequency and amplitude of Ca2+ oscillations primarily by inhibition of TASK without involving ASICs, and suggests a major role of TASK for signal transduction in response to a physiological change in pHo.
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Affiliation(s)
- Donghee Kim
- Department of Physiology and Biophysics, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, United States
| | - James O Hogan
- Department of Physiology and Biophysics, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, United States
| | - Carl White
- Department of Physiology and Biophysics, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, United States
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6
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MacFarlane PM, Mayer CA, Caplan AI, Raffay TM, Mayer AJ, Bonfield TL. Human bone marrow-derived mesenchymal stem cells rescue neonatal CPAP-induced airway hyperreactivity. Respir Physiol Neurobiol 2022; 302:103913. [PMID: 35436602 PMCID: PMC9936817 DOI: 10.1016/j.resp.2022.103913] [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: 02/28/2022] [Accepted: 04/13/2022] [Indexed: 11/15/2022]
Abstract
Continuous positive airway pressure (CPAP) is a primary non-invasive mode of respiratory support for preterm infants. However, emerging evidence suggests CPAP could be an underlying contributor to the unintended pathophysiology of wheezing and associated airway hyperreactivity (AHR) in former preterm infants. The therapeutic benefits of mesenchymal stem cells (MSCs) have been demonstrated in a variety of animal models and several clinical trials are currently underway to assess their safety profiles in the setting of prematurity and bronchopulmonary dysplasia (BPD). In the present study, using a mouse model of neonatal CPAP, we investigated whether conditioned medium harvested from cultures of human bone-marrow derived mesenchymal stem cells (hMSC) could rescue the CPAP-induced AHR, based upon previous observations of their anti-AHR properties. Newborn mice (male and female) were fitted with a custom-made mask for delivery of daily CPAP 3 h/day for the first 7 postnatal days. At postnatal day 21 (two weeks after CPAP ended), lungs were removed, precision-cut lung slices were sectioned and incubated for 48 h in vitro in conditioned medium collected from cultures of three different hMSC donors. As expected, CPAP resulted in AHR to methacholine compared to untreated control mice. hMSC conditioned medium from the cultures of all three donors completely reversed AHR. These data reveal potential therapeutic benefits of hMSC therapy, which may be capable of rescuing the long-term adverse effects of neonatal CPAP on human airway function.
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Affiliation(s)
- PM MacFarlane
- Department of Pediatrics, Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, OH 44106, USA, Correspondence to: Department of Pediatrics, Case Western Reserve University, Rainbow Babies & Children’s Hospital, 11100 Euclid Ave, Cleveland, OH 44106-6010, USA. (P. MacFarlane)
| | - CA Mayer
- Department of Pediatrics, Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, OH 44106, USA
| | - AI Caplan
- Skeletal Research Center, Department of Biology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - TM Raffay
- Department of Pediatrics, Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, OH 44106, USA
| | - AJ Mayer
- Department of Pediatrics, Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, OH 44106, USA
| | - TL Bonfield
- Department of Genetics and Genome Sciences, Department of Pediatrics and National Center of Regenerative Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
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7
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Morgan LM, Martin SL, Mullins ND, Hollywood MA, Thornbury KD, Sergeant GP. Modulation of carbachol-induced Ca2+ oscillations in airway smooth muscle cells by PGE2. Cell Calcium 2022; 103:102547. [DOI: 10.1016/j.ceca.2022.102547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 01/31/2022] [Accepted: 02/01/2022] [Indexed: 11/02/2022]
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8
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Qu M, Lu P, Bellve K, Lifshitz LM, ZhuGe R. Mode Switch of Ca 2 + Oscillation-Mediated Uterine Peristalsis and Associated Embryo Implantation Impairments in Mouse Adenomyosis. Front Physiol 2021; 12:744745. [PMID: 34803733 PMCID: PMC8599363 DOI: 10.3389/fphys.2021.744745] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 10/12/2021] [Indexed: 11/13/2022] Open
Abstract
Adenomyosis is a debilitating gynecological disease of the uterus with no medicinal cure. The tissue injury and repair hypothesis for adenomyosis suggests that uterine hyperperistalsis or dysperistalsis plays a pivotal role in establishing adenomyotic lesions. However, specific impairments in uterine peristalsis and the underlying cellular signals for these changes in adenomyosis remain elusive. Here, we report a precision-cut uterine slice preparation that preserves in vivo uterine architecture and generates peristalsis similar to that seen in the whole uterus. We found that uterine peristalsis in neonatal mice at day 14 and adult mice at day 55 presents as bursts with multiple peaks induced by intracellular Ca2+ oscillations. Using a mouse model of adenomyosis induced by tamoxifen, a selective estrogen receptor modulator, we discovered that uterine peristalsis and Ca2+ oscillations from adenomyotic uteri on days 14 and 55 become spikes (single peaks) with smaller amplitudes. The peak frequency of Ca2+ oscillations or peristalsis does not show a difference between control and adenomyotic mice. However, both the estimated force generated by uterine peristalsis and the total Ca2+ raised by Ca2+ oscillations are smaller in uteri from adenomyotic mice. Uteri from adenomyotic mice on day 14, but not on day 55, exhibit hyperresponsiveness to oxytocin. Embryo implantations are decreased in adenomyotic adult mice. Our results reveal a mode switch from bursts to spikes (rather than an increased peak frequency) of uterine Ca2+ oscillations and peristalsis and concurrent hyperresponsiveness to oxytocin in the neonatal stage are two characteristics of adenomyosis. These characteristics may contribute to embryo implantation impairments and decreased fertility in adenomyosis.
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Affiliation(s)
- Mingzi Qu
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA, United States
| | - Ping Lu
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA, United States
| | - Karl Bellve
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, United States
| | - Lawrence M Lifshitz
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, United States
| | - Ronghua ZhuGe
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA, United States
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9
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Abstract
Live imaging is critical to determining the dynamics and spatial interactions of cells within the tissue environment. In the lung, this has proven to be difficult due to the motion brought about by ventilation and cardiac contractions. A previous version of this Current Protocols in Cytometry article reported protocols for imaging ex vivo live lung slices and the intact mouse lung. Here, we update those protocols by adding new methodologies, new approaches for quantitative image analysis, and new areas of potential application. © 2020 Wiley Periodicals LLC. Basic Protocol 1: Live imaging of lung slices Support Protocol 1: Staining lung sections with fluorescent antibodies Basic Protocol 2: Live imaging in the mouse lung Support Protocol 2: Intratracheal instillations Support Protocol 3: Intravascular instillations Support Protocol 4: Monitoring vital signs of the mouse during live lung imaging Support Protocol 5: Antibodies Support Protocol 6: Fluorescent reporter mice Basic Protocol 3: Quantification of neutrophil-platelet aggregation in pulmonary vasculature Basic Protocol 4: Quantification of platelet-dependent pulmonary thrombosis Basic Protocol 5: Quantification of pulmonary vascular permeability.
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Affiliation(s)
- Tomasz Brzoska
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.,Division of Hematology/Oncology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Tomasz W Kaminski
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Margaret F Bennewitz
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia
| | - Prithu Sundd
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.,Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania.,Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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10
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Jo MH, Kim BC, Sung K, Panettieri RA, An SS, Liu J, Ha T. Molecular Nanomechanical Mapping of Histamine-Induced Smooth Muscle Cell Contraction and Shortening. ACS NANO 2021; 15:11585-11596. [PMID: 34197709 PMCID: PMC10144385 DOI: 10.1021/acsnano.1c01782] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Mechanical response to external stimuli is a conserved feature of many cell types. For example, neurotransmitters (e.g., histamine) trigger calcium signals that induce actomyosin-regulated contraction of airway smooth muscle (ASM); the resulting cell shortening causes airway narrowing, the excess of which can cause asthma. Despite intensive studies, however, it remains unclear how physical forces are propagated through focal adhesion (FA)-the major force-transmission machinery of the cell-during ASM shortening. We provide a nanomechanical platform to directly image single molecule forces during ASM cell shortening by repurposing DNA tension sensors. Surprisingly, cell shortening and FA disassembly that immediately precedes it occurred long after histamine-evoked increases in intracellular calcium levels ([Ca2+]i). Our mathematical model that fully integrates cell edge protrusion and retraction with contractile forces acting on FA predicted that (1) stabilization of FA impedes cell shortening and (2) the disruption of FAs is preceded by their strengthening through actomyosin-activated molecular tension. We confirmed these predictions via real-time imaging and molecular force measurements. Together, our work highlights a key role of FA dynamics in regulating ASM contraction induced by an allergen with potential therapeutic implications.
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Affiliation(s)
- Myung Hyun Jo
- Department of Biophysics and Biophysical Chemistry, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Byoung Choul Kim
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Division of Nano-Bioengineering, Incheon National University, Incheon 22012, South Korea
| | - Keewon Sung
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Reynold A. Panettieri
- Rutgers Institute for Translational Medicine and Science, The State University of New Jersey, New Brunswick, NJ 08901, USA
| | - Steven S. An
- Rutgers Institute for Translational Medicine and Science, The State University of New Jersey, New Brunswick, NJ 08901, USA
- Department of Pharmacology, Rutgers-Robert Wood Johnson Medical School, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Jian Liu
- Department of Cell Biology and Center for Cell Dynamics, Johns Hopkins School of Medicine, Baltimore, MD 20205, USA
| | - Taekjip Ha
- Department of Biophysics and Biophysical Chemistry, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Howard Hughes Medical Institute, Baltimore, MD 21205, USA
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Kim SY, Mongey R, Griffiths M, Hind M, Dean CH. An Ex Vivo Acid Injury and Repair (AIR) Model Using Precision-Cut Lung Slices to Understand Lung Injury and Repair. ACTA ACUST UNITED AC 2020; 10:e85. [PMID: 33217226 DOI: 10.1002/cpmo.85] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Recent advances in cell culture models like air-liquid interface culture and ex vivo models such as organoids have advanced studies of lung biology; however, gaps exist between these models and tools that represent the complexity of the three-dimensional environment of the lung. Precision-cut lung slices (PCLS) mimic the in vivo environment and bridge the gap between in vitro and in vivo models. We have established the acid injury and repair (AIR) model where a spatially restricted area of tissue is injured using drops of HCl combined with Pluronic gel. Injury and repair are assessed by immunofluorescence using robust markers, including Ki67 for cell proliferation and prosurfactant protein C for alveolar type 2/progenitor cells. Importantly, the AIR model enables the study of injury and repair in mouse lung tissue without the need for an initial in vivo injury, and the results are highly reproducible. Here, we present detailed protocols for the generation of PCLS and the AIR model. We also describe methods to analyze and quantify injury in AIR-PCLS by immunostaining with established early repair markers and fluorescence imaging. This novel ex vivo model is a versatile tool for studying lung cell biology in acute lung injury and for semi-high-throughput screening of potential therapeutics. © 2020 Wiley Periodicals LLC. Basic Protocol 1: Generation of precision-cut lung slices Basic Protocol 2: The acid injury and repair model Basic Protocol 3: Analysis of AIR-PCLS: Immunostaining and imaging.
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Affiliation(s)
- Sally Yunsun Kim
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Róisín Mongey
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Mark Griffiths
- National Heart and Lung Institute, Imperial College London, London, United Kingdom.,Peri-Operative Medicine Department, St Bartholomew's Hospital, London, United Kingdom
| | - Matthew Hind
- National Heart and Lung Institute, Imperial College London, London, United Kingdom.,National Institute for Health Research (NIHR) Respiratory Biomedical Research Unit at the Royal Brompton & Harefield NHS Foundation Trust and Imperial College, London, United Kingdom
| | - Charlotte H Dean
- National Heart and Lung Institute, Imperial College London, London, United Kingdom.,MRC Harwell Institute, Harwell Campus, Oxfordshire, United Kingdom
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12
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Veerati PC, Mitchel JA, Reid AT, Knight DA, Bartlett NW, Park JA, Grainge CL. Airway mechanical compression: its role in asthma pathogenesis and progression. Eur Respir Rev 2020; 29:190123. [PMID: 32759373 PMCID: PMC8008491 DOI: 10.1183/16000617.0123-2019] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 01/30/2020] [Indexed: 12/22/2022] Open
Abstract
The lung is a mechanically active organ, but uncontrolled or excessive mechanical forces disrupt normal lung function and can contribute to the development of disease. In asthma, bronchoconstriction leads to airway narrowing and airway wall buckling. A growing body of evidence suggests that pathological mechanical forces induced by airway buckling alone can perpetuate disease processes in asthma. Here, we review the data obtained from a variety of experimental models, including in vitro, ex vivo and in vivo approaches, which have been used to study the impact of mechanical forces in asthma pathogenesis. We review the evidence showing that mechanical compression alters the biological and biophysical properties of the airway epithelium, including activation of the epidermal growth factor receptor pathway, overproduction of asthma-associated mediators, goblet cell hyperplasia, and a phase transition of epithelium from a static jammed phase to a mobile unjammed phase. We also define questions regarding the impact of mechanical forces on the pathology of asthma, with a focus on known triggers of asthma exacerbations such as viral infection.
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Affiliation(s)
- Punnam Chander Veerati
- School of Medicine and Public Health, University of Newcastle, Callaghan, Australia
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, University of Newcastle, New Lambton Heights, Australia
| | - Jennifer A Mitchel
- Molecular and Integrative Physiological Sciences Program, Dept of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Andrew T Reid
- School of Medicine and Public Health, University of Newcastle, Callaghan, Australia
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, University of Newcastle, New Lambton Heights, Australia
| | - Darryl A Knight
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, University of Newcastle, New Lambton Heights, Australia
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, Australia
- Dept of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
- Research and Academic Affairs, Providence Health Care Research Institute, Vancouver, Canada
| | - Nathan W Bartlett
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, University of Newcastle, New Lambton Heights, Australia
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, Australia
| | - Jin-Ah Park
- Molecular and Integrative Physiological Sciences Program, Dept of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Chris L Grainge
- School of Medicine and Public Health, University of Newcastle, Callaghan, Australia
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, University of Newcastle, New Lambton Heights, Australia
- Dept of Respiratory and Sleep Medicine, John Hunter Hospital, Newcastle, Australia
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13
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Bonvini SJ, Birrell MA, Dubuis E, Adcock JJ, Wortley MA, Flajolet P, Bradding P, Belvisi MG. Novel airway smooth muscle-mast cell interactions and a role for the TRPV4-ATP axis in non-atopic asthma. Eur Respir J 2020; 56:13993003.01458-2019. [PMID: 32299856 PMCID: PMC7330131 DOI: 10.1183/13993003.01458-2019] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 02/27/2020] [Indexed: 01/28/2023]
Abstract
Mast cell–airway smooth muscle (ASM) interactions play a major role in the immunoglobulin (Ig)E- dependent bronchoconstriction seen in asthma but less is known about IgE-independent mechanisms of mast cell activation. Transient receptor potential cation channel, subfamily V, member 4 (TRPV4) activation causes contraction of human ASM via the release of cysteinyl leukotrienes (cysLTs) but the mechanism is unknown. The objective of the present study was to investigate a role for IgE-independent, mast cell–ASM interaction in TRPV4-induced bronchospasm. A technique not previously applied to respiratory research now uncovers important IgE-independent mechanisms involved in human mast cell–airway smooth muscle interactions that may be responsible for the bronchospasm associated with non-atopic asthmahttp://bit.ly/2U1n5nT
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Affiliation(s)
- Sara J Bonvini
- Respiratory Pharmacology Group, Airway Disease, National Heart and Lung Institute, Imperial College London, London, UK.,Research and Early Development, Respiratory and Immunology, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.,Contributed equally
| | - Mark A Birrell
- Respiratory Pharmacology Group, Airway Disease, National Heart and Lung Institute, Imperial College London, London, UK.,Research and Early Development, Respiratory and Immunology, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.,Contributed equally
| | - Eric Dubuis
- Respiratory Pharmacology Group, Airway Disease, National Heart and Lung Institute, Imperial College London, London, UK
| | - John J Adcock
- Respiratory Pharmacology Group, Airway Disease, National Heart and Lung Institute, Imperial College London, London, UK.,Research and Early Development, Respiratory and Immunology, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Michael A Wortley
- Respiratory Pharmacology Group, Airway Disease, National Heart and Lung Institute, Imperial College London, London, UK
| | - Pauline Flajolet
- Respiratory Pharmacology Group, Airway Disease, National Heart and Lung Institute, Imperial College London, London, UK
| | - Peter Bradding
- Dept of Infection, Immunity and Inflammation, University of Leicester University, Institute for Lung Health, Glenfield Hospital, Leicester, UK
| | - Maria G Belvisi
- Respiratory Pharmacology Group, Airway Disease, National Heart and Lung Institute, Imperial College London, London, UK .,Research and Early Development, Respiratory and Immunology, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
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14
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Sarcoplasmic reticulum and calcium signaling in muscle cells: Homeostasis and disease. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2020; 350:197-264. [PMID: 32138900 DOI: 10.1016/bs.ircmb.2019.12.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The sarco/endoplasmic reticulum is an extensive, dynamic and heterogeneous membranous network that fulfills multiple homeostatic functions. Among them, it compartmentalizes, stores and releases calcium within the intracellular space. In the case of muscle cells, calcium released from the sarco/endoplasmic reticulum in the vicinity of the contractile machinery induces cell contraction. Furthermore, sarco/endoplasmic reticulum-derived calcium also regulates gene transcription in the nucleus, energy metabolism in mitochondria and cytosolic signaling pathways. These diverse and overlapping processes require a highly complex fine-tuning that the sarco/endoplasmic reticulum provides by means of its numerous tubules and cisternae, specialized domains and contacts with other organelles. The sarco/endoplasmic reticulum also possesses a rich calcium-handling machinery, functionally coupled to both contraction-inducing stimuli and the contractile apparatus. Such is the importance of the sarco/endoplasmic reticulum for muscle cell physiology, that alterations in its structure, function or its calcium-handling machinery are intimately associated with the development of cardiometabolic diseases. Cardiac hypertrophy, insulin resistance and arterial hypertension are age-related pathologies with a common mechanism at the muscle cell level: the accumulation of damaged proteins at the sarco/endoplasmic reticulum induces a stress response condition termed endoplasmic reticulum stress, which impairs proper organelle function, ultimately leading to pathogenesis.
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15
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Kim D, Hogan JO, White C. Ca 2+ oscillations in rat carotid body type 1 cells in normoxia and hypoxia. Am J Physiol Cell Physiol 2020; 318:C430-C438. [PMID: 31913694 DOI: 10.1152/ajpcell.00442.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We studied the mechanisms by which carotid body glomus (type 1) cells produce spontaneous Ca2+ oscillations in normoxia and hypoxia. In cells perfused with normoxic solution at 37°C, we observed relatively uniform, low-frequency Ca2+ oscillations in >60% of cells, with each cell showing its own intrinsic frequency and amplitude. The mean frequency and amplitude of Ca2+ oscillations were 0.6 ± 0.1 Hz and 180 ± 42 nM, respectively. The duration of each Ca2+ oscillation ranged from 14 to 26 s (mean of ∼20 s). Inhibition of inositol (1,4,5)-trisphosphate receptor and store-operated Ca2+ entry (SOCE) using 2-APB abolished Ca2+ oscillations. Inhibition of endoplasmic reticulum Ca2+-ATPase (SERCA) using thapsigargin abolished Ca2+ oscillations. ML-9, an inhibitor of STIM1 translocation, also strongly reduced Ca2+ oscillations. Inhibitors of L- and T-type Ca2+ channels (Cav; verapamil>nifedipine>TTA-P2) markedly reduced the frequency of Ca2+ oscillations. Thus, Ca2+ oscillations observed in normoxia were caused by cyclical Ca2+ fluxes at the ER, which was supported by Ca2+ influx via Ca2+ channels. Hypoxia (2-5% O2) increased the frequency and amplitude of Ca2+ oscillations, and Cav inhibitors (verapamil>nifedipine>>TTA-P2) reduced these effects of hypoxia. Our study shows that Ca2+ oscillations represent the basic Ca2+ signaling mechanism in normoxia and hypoxia in CB glomus cells.
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Affiliation(s)
- Donghee Kim
- Department of Physiology and Biophysics, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois
| | - James O Hogan
- Department of Physiology and Biophysics, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois
| | - Carl White
- Department of Physiology and Biophysics, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois
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16
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Singh BK, Lu W, Schmidt Paustian AM, Ge MQ, Koziol-White CJ, Flayer CH, Killingbeck SS, Wang N, Dong X, Riese MJ, Deshpande DA, Panettieri RA, Haczku A, Kambayashi T. Diacylglycerol kinase ζ promotes allergic airway inflammation and airway hyperresponsiveness through distinct mechanisms. Sci Signal 2019; 12:12/597/eaax3332. [PMID: 31481522 DOI: 10.1126/scisignal.aax3332] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Asthma is a chronic allergic inflammatory airway disease caused by aberrant immune responses to inhaled allergens, which leads to airway hyperresponsiveness (AHR) to contractile stimuli and airway obstruction. Blocking T helper 2 (TH2) differentiation represents a viable therapeutic strategy for allergic asthma, and strong TCR-mediated ERK activation blocks TH2 differentiation. Here, we report that targeting diacylglycerol (DAG) kinase zeta (DGKζ), a negative regulator of DAG-mediated cell signaling, protected against allergic asthma by simultaneously reducing airway inflammation and AHR though independent mechanisms. Targeted deletion of DGKζ in T cells decreased type 2 inflammation without reducing AHR. In contrast, loss of DGKζ in airway smooth muscle cells decreased AHR but not airway inflammation. T cell-specific enhancement of ERK signaling was only sufficient to limit type 2 airway inflammation, not AHR. Pharmacological inhibition of DGK diminished both airway inflammation and AHR in mice and also reduced bronchoconstriction of human airway samples in vitro. These data suggest that DGK is a previously unrecognized therapeutic target for asthma and reveal that the inflammatory and AHR components of asthma are not as interdependent as generally believed.
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Affiliation(s)
- Brenal K Singh
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Wen Lu
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Amanda M Schmidt Paustian
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Moyar Q Ge
- Pulmonary, Critical Care and Sleep Division, University of California, Davis, Davis, CA 95616, USA
| | - Cynthia J Koziol-White
- Rutgers Institute for Translational Medicine and Science, Rutgers University, New Brunswick, NJ 08901, USA
| | - Cameron H Flayer
- Pulmonary, Critical Care and Sleep Division, University of California, Davis, Davis, CA 95616, USA
| | - Sara S Killingbeck
- Pulmonary, Critical Care and Sleep Division, University of California, Davis, Davis, CA 95616, USA
| | - Nadan Wang
- Department of Medicine, Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Xinzhong Dong
- The Solomon H. Snyder Department of Neuroscience, Center for Sensory Biology, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Matthew J Riese
- Blood Research Institute, Blood Center of Wisconsin, Milwaukee, WI 53226, USA
| | - Deepak A Deshpande
- Department of Medicine, Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Reynold A Panettieri
- Rutgers Institute for Translational Medicine and Science, Rutgers University, New Brunswick, NJ 08901, USA
| | - Angela Haczku
- Pulmonary, Critical Care and Sleep Division, University of California, Davis, Davis, CA 95616, USA
| | - Taku Kambayashi
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.
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17
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Regulation of Airway Smooth Muscle Contraction in Health and Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1124:381-422. [PMID: 31183836 DOI: 10.1007/978-981-13-5895-1_16] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Airway smooth muscle (ASM) extends from the trachea throughout the bronchial tree to the terminal bronchioles. In utero, spontaneous phasic contraction of fetal ASM is critical for normal lung development by regulating intraluminal fluid movement, ASM differentiation, and release of key growth factors. In contrast, phasic contraction appears to be absent in the adult lung, and regulation of tonic contraction and airflow is under neuronal and humoral control. Accumulating evidence suggests that changes in ASM responsiveness contribute to the pathophysiology of lung diseases with lifelong health impacts.Functional assessments of fetal and adult ASM and airways have defined pharmacological responses and signaling pathways that drive airway contraction and relaxation. Studies using precision-cut lung slices, in which contraction of intrapulmonary airways and ASM calcium signaling can be assessed simultaneously in situ, have been particularly informative. These combined approaches have defined the relative importance of calcium entry into ASM and calcium release from intracellular stores as drivers of spontaneous phasic contraction in utero and excitation-contraction coupling.Increased contractility of ASM in asthma contributes to airway hyperresponsiveness. Studies using animal models and human ASM and airways have characterized inflammatory and other mechanisms underlying increased reactivity to contractile agonists and reduced bronchodilator efficacy of β2-adrenoceptor agonists in severe diseases. Novel bronchodilators and the application of bronchial thermoplasty to ablate increased ASM within asthmatic airways have the potential to overcome limitations of current therapies. These approaches may directly limit excessive airway contraction to improve outcomes for difficult-to-control asthma and other chronic lung diseases.
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18
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Wu X, van Dijk EM, Bos IST, Kistemaker LEM, Gosens R. Mouse Lung Tissue Slice Culture. Methods Mol Biol 2019; 1940:297-311. [PMID: 30788834 DOI: 10.1007/978-1-4939-9086-3_21] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Precision-cut lung slices (PCLS) represent an ex vivo model widely used in visualizing interactions between lung structure and function. The major advantage of this technique is that the presence, differentiation state, and localization of the more than 40 cell types that make up the lung are in accordance with the physiological situation found in lung tissue, including the right localization and patterning of extracellular matrix elements. Here we describe the methodology involved in preparing and culturing PCLS followed by detailed practical information about their possible applications.
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Affiliation(s)
- Xinhui Wu
- Faculty of Science and Engineering, Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands.,Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Eline M van Dijk
- Faculty of Science and Engineering, Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands.,Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - I Sophie T Bos
- Faculty of Science and Engineering, Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands.,Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Loes E M Kistemaker
- Faculty of Science and Engineering, Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands.,Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Reinoud Gosens
- Faculty of Science and Engineering, Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands. .,Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
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19
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Calzetta L, Rogliani P, Page C, Rinaldi B, Cazzola M, Matera MG. Pharmacological characterization of the interaction between tiotropium bromide and olodaterol on human bronchi and small airways. Pulm Pharmacol Ther 2019; 56:39-50. [DOI: 10.1016/j.pupt.2019.03.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/08/2019] [Accepted: 03/08/2019] [Indexed: 12/20/2022]
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20
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Shigemura M, Lecuona E, Angulo M, Homma T, Rodríguez DA, Gonzalez-Gonzalez FJ, Welch LC, Amarelle L, Kim SJ, Kaminski N, Budinger GRS, Solway J, Sznajder JI. Hypercapnia increases airway smooth muscle contractility via caspase-7-mediated miR-133a-RhoA signaling. Sci Transl Med 2018; 10:eaat1662. [PMID: 30185650 PMCID: PMC6889079 DOI: 10.1126/scitranslmed.aat1662] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 06/07/2018] [Accepted: 08/16/2018] [Indexed: 12/12/2022]
Abstract
The elevation of carbon dioxide (CO2) in tissues and the bloodstream (hypercapnia) occurs in patients with severe lung diseases, including chronic obstructive pulmonary disease (COPD). Whereas hypercapnia has been recognized as a marker of COPD severity, a role for hypercapnia in disease pathogenesis remains unclear. We provide evidence that CO2 acts as a signaling molecule in mouse and human airway smooth muscle cells. High CO2 activated calcium-calpain signaling and consequent smooth muscle cell contraction in mouse airway smooth muscle cells. The signaling was mediated by caspase-7-induced down-regulation of the microRNA-133a (miR-133a) and consequent up-regulation of Ras homolog family member A and myosin light-chain phosphorylation. Exposure of wild-type, but not caspase-7-null, mice to hypercapnia increased airway contraction and resistance. Deletion of the Caspase-7 gene prevented hypercapnia-induced airway contractility, which was restored by lentiviral transfection of a miR-133a antagonist. In a cohort of patients with severe COPD, hypercapnic patients had higher airway resistance, which improved after correction of hypercapnia. Our data suggest a specific molecular mechanism by which the development of hypercapnia may drive COPD pathogenesis and progression.
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Affiliation(s)
- Masahiko Shigemura
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan
| | - Emilia Lecuona
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Martín Angulo
- Pathophysiology Department, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Tetsuya Homma
- Division of Allergology and Respiratory Medicine, Department of Internal Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Diego A Rodríguez
- Pulmonology Department, Hospital del Mar, Institut Hospital del Mar d'Investigacions Me`diques, Universitat Pompeu Fabra, Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), ISCiii, Barcelona, Spain
| | | | - Lynn C Welch
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Luciano Amarelle
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA
- Pathophysiology Department, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Seok-Jo Kim
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, IL 60612, USA
| | - Naftali Kaminski
- Department of Internal Medicine, Section of Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, New Haven, CT 06520, USA
| | - G R Scott Budinger
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Julian Solway
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA.
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21
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Shimazu Y, Zhang B, Yue Z, Wallace GG, Fukuda J. Engineering of perfusable double-layered vascular structures using contraction of spheroid-embedded hydrogel and electrochemical cell detachment. J Biosci Bioeng 2018; 127:114-120. [PMID: 30072116 DOI: 10.1016/j.jbiosc.2018.07.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 06/21/2018] [Accepted: 07/06/2018] [Indexed: 12/19/2022]
Abstract
Perfusable vasculatures are essential for engineering three-dimensional thick tissues and organs in the fields of tissue engineering and regenerative medicine. Here, we describe an approach for the fabrication of double-layered vascular-like structures (DVSs) composed of a monolayer of human vascular endothelial cells (HUVECs) covered with a dense human smooth muscle cell (SMC) layer. HUVECs were attached to a gold needle via the oligopeptide self-assembled monolayer and grown to form a HUVEC monolayer that was subsequently embedded in a photo-crosslinkable gelatin hydrogel containing SMC spheroids in a culture chamber. During four days of culture, the hydrogel significantly contracted and formed a dense SMC layer around the needle. The binding between the HUVEC layer and the gold needle was cleaved by applying a negative potential to desorb the oligopeptide and the needle was extracted from the chamber, resulting in a perfusable DVS composed of HUVEC and SMC layers. The DVS was cultured under perfusion, and the cells in the DVS showed greater expressions of SMC-specific genes compared to those of spheroids. The DVS possessed a dynamic contraction ability in response to acetylcholine as observed in the in vivo SMC layer. This study proposes a promising approach for the fabrication of perfusable vasculatures for the engineering of fully vascularized tissues and organs.
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Affiliation(s)
- Yuka Shimazu
- Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Binbin Zhang
- Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan; ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Zhilian Yue
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Gordon G Wallace
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Junji Fukuda
- Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan.
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22
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Debelleix S, Siao-Him Fa V, Begueret H, Berger P, Kamaev A, Ousova O, Marthan R, Fayon M. Montelukast reverses airway remodeling in actively sensitized young mice. Pediatr Pulmonol 2018; 53:701-709. [PMID: 29493871 DOI: 10.1002/ppul.23980] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 02/10/2018] [Indexed: 12/22/2022]
Abstract
UNLABELLED Asthma is characterized by airway hyperresponsiveness (AHR) and inflammation leading to airway remodeling (AR). In children, AR may occur very early prior to the age of 6 years. Treatments to prevent or reverse AR are unknown. AIM We sought to determine (i) whether short allergenic sensitization at a young age in a mouse model may induce enhanced AR and inflammation compared to adults; (ii) the effect of Montelukast on such AR. METHODS Immature and adult Balb/c mice were sensitized and challenged with ovalbumin. AHR and AR were measured using cultured precision-cut lung slices and inflammation by bronchoalveolar lavage. Experiments were repeated after administration of Montelukast. RESULTS OVA-challenged mice developed AHR to methacholine regardless of age of first exposure to OVA. Young mice developed greater thickened basement membrane, increased smooth muscle mass, and increased area of bronchovascular fibrosis compared with adult mice. Cellular infiltrates in BAL differed depending upon animal age at first exposure with higher eosinophilia measured in younger animals. Montelukast decreased ASM mass, BAL cellularity. CONCLUSION We provide thus evidence for a greater degree of AR after allergenic sensitization and challenge in younger mice versus adults. This study provides proof of concept that airway remodeling can be prevented and reversed in this case by anti-asthmatic drug Montelukast in this model.
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Affiliation(s)
- Stephane Debelleix
- Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,CHU de Bordeaux, Service de Pneumo-Pédiatrie, Service d'anatomopathologie, Service d'Explorations Fonctionnelles Respiratoires, Bordeaux, France
| | - Valérie Siao-Him Fa
- Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,CHU de Bordeaux, Service de Pneumo-Pédiatrie, Service d'anatomopathologie, Service d'Explorations Fonctionnelles Respiratoires, Bordeaux, France
| | - Hugues Begueret
- Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,CHU de Bordeaux, Service de Pneumo-Pédiatrie, Service d'anatomopathologie, Service d'Explorations Fonctionnelles Respiratoires, Bordeaux, France
| | - Patrick Berger
- Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,CHU de Bordeaux, Service de Pneumo-Pédiatrie, Service d'anatomopathologie, Service d'Explorations Fonctionnelles Respiratoires, Bordeaux, France
| | - Andy Kamaev
- Department of general practice, Pavlov First Saint-Petersburg State Medical University, St. Petersburg, Russia
| | - Olga Ousova
- Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,CHU de Bordeaux, Service de Pneumo-Pédiatrie, Service d'anatomopathologie, Service d'Explorations Fonctionnelles Respiratoires, Bordeaux, France
| | - Roger Marthan
- Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,CHU de Bordeaux, Service de Pneumo-Pédiatrie, Service d'anatomopathologie, Service d'Explorations Fonctionnelles Respiratoires, Bordeaux, France
| | - Michael Fayon
- Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,CHU de Bordeaux, Service de Pneumo-Pédiatrie, Service d'anatomopathologie, Service d'Explorations Fonctionnelles Respiratoires, Bordeaux, France
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23
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Henriquez M, Fonseca M, Perez-Zoghbi JF. Purinergic receptor stimulation induces calcium oscillations and smooth muscle contraction in small pulmonary veins. J Physiol 2018; 596:2491-2506. [PMID: 29790164 DOI: 10.1113/jp274731] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 04/11/2018] [Indexed: 01/05/2023] Open
Abstract
KEY POINTS We investigated the excitation-contraction coupling mechanisms in small pulmonary veins (SPVs) in rat precision-cut lung slices. We found that SPVs contract strongly and reversibly in response to extracellular ATP and other vasoconstrictors, including angiotensin-II and endothelin-1. ATP-induced vasoconstriction in SPVs was associated with the stimulation of purinergic P2Y2 receptors in vascular smooth muscle cell, activation of phospholipase C-β and the generation of intracellular Ca2+ oscillations mediated by cyclic Ca2+ release events via the inositol 1,4,5-trisphosphate receptor. Active constriction of SPVs may play an important role in the development of pulmonary hypertension and pulmonary oedema. ABSTRACT The small pulmonary veins (SPVs) may play a role in the development of pulmonary hypertension and pulmonary oedema via active changes in SPV diameter, mediated by vascular smooth muscle cell (VSMC) contraction. However, the excitation-contraction coupling mechanisms during vasoconstrictor stimulation remain poorly understood in these veins. We used rat precision-cut lung slices and phase-contrast and confocal microscopy to investigate dynamic changes in SPV cross-sectional luminal area and intracellular Ca2+ signalling in their VSMCs. We found that the SPV (∼150 μm in diameter) contract strongly in response to extracellular ATP and other vasoconstrictors, including angiotensin-II and endothelin-1. ATP-induced SPV contraction was fast, concentration-dependent, completely reversible upon ATP washout, and inhibited by purinergic receptor antagonists suramin and AR-C118925 but not by MRS2179. Immunofluorescence showed purinergic P2Y2 receptors expressed in SPV VSMCs. ATP-induced SPV contraction was inhibited by phospholipase Cβ inhibitor U73122 and accompanied by intracellular Ca2+ oscillations in the VSMCs. These Ca2+ oscillations and SPV contraction were inhibited by the inositol 1,4,5-trisphosphate receptor inhibitor 2-APB but not by ryanodine. The results of the present study suggest that ATP-induced vasoconstriction in SPVs is associated with the activation of purinergic P2Y2 receptors in VSMCs and the generation of Ca2+ oscillations.
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Affiliation(s)
- Mauricio Henriquez
- Program of Physiology and Biophysics, ICBM, Faculty of Medicine, University of Chile, Independencia 1027, Santiago, Chile
| | - Marcelo Fonseca
- Program of Physiology and Biophysics, ICBM, Faculty of Medicine, University of Chile, Independencia 1027, Santiago, Chile
| | - Jose F Perez-Zoghbi
- Department of Anesthesiology, College of Physicians & Surgeons, Columbia University Medical Center, New York, NY, USA
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24
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Keshavarz M, Skill M, Hollenhorst MI, Maxeiner S, Walecki M, Pfeil U, Kummer W, Krasteva-Christ G. Caveolin-3 differentially orchestrates cholinergic and serotonergic constriction of murine airways. Sci Rep 2018; 8:7508. [PMID: 29760450 PMCID: PMC5951923 DOI: 10.1038/s41598-018-25445-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 04/16/2018] [Indexed: 01/22/2023] Open
Abstract
The mechanisms of controlling airway smooth muscle (ASM) tone are of utmost clinical importance as inappropriate constriction is a hallmark in asthma and chronic obstructive pulmonary disease. Receptors for acetylcholine and serotonin, two relevant mediators in this context, appear to be incorporated in specialized, cholesterol-rich domains of the plasma membrane, termed caveolae due to their invaginated shape. The structural protein caveolin-1 partly accounts for anchoring of these receptors. We here determined the role of the other major caveolar protein, caveolin-3 (cav-3), in orchestrating cholinergic and serotonergic ASM responses, utilizing newly generated cav-3 deficient mice. Cav-3 deficiency fully abrogated serotonin-induced constriction of extrapulmonary airways in organ baths while leaving intrapulmonary airways unaffected, as assessed in precision cut lung slices. The selective expression of cav-3 in tracheal, but not intrapulmonary bronchial epithelial cells, revealed by immunohistochemistry, might explain the differential effects of cav-3 deficiency on serotonergic ASM constriction. The cholinergic response of extrapulmonary airways was not altered, whereas a considerable increase was observed in cav-3-/- intrapulmonary bronchi. Thus, cav-3 differentially organizes serotonergic and cholinergic signaling in ASM through mechanisms that are specific for airways of certain caliber and anatomical position. This may allow for selective and site-specific intervention in hyperreactive states.
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Affiliation(s)
- M Keshavarz
- Institute of Anatomy and Cell Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - M Skill
- Institute of Anatomy and Cell Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - M I Hollenhorst
- Institute of Anatomy and Cell Biology, School of Medicine, Saarland University, Saarbrucken, Germany
| | - S Maxeiner
- Institute of Anatomy and Cell Biology, School of Medicine, Saarland University, Saarbrucken, Germany
| | - M Walecki
- Institute of Anatomy and Cell Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - U Pfeil
- Institute of Anatomy and Cell Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - W Kummer
- Institute of Anatomy and Cell Biology, Justus-Liebig-University Giessen, Giessen, Germany.,German Center for Lung Research (DZL), Marburg, Germany
| | - G Krasteva-Christ
- Institute of Anatomy and Cell Biology, Justus-Liebig-University Giessen, Giessen, Germany. .,German Center for Lung Research (DZL), Marburg, Germany. .,Institute of Anatomy and Cell Biology, School of Medicine, Saarland University, Saarbrucken, Germany.
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25
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Neuhaus V, Danov O, Konzok S, Obernolte H, Dehmel S, Braubach P, Jonigk D, Fieguth HG, Zardo P, Warnecke G, Martin C, Braun A, Sewald K. Assessment of the Cytotoxic and Immunomodulatory Effects of Substances in Human Precision-cut Lung Slices. J Vis Exp 2018. [PMID: 29806827 PMCID: PMC6101160 DOI: 10.3791/57042] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Respiratory diseases in their broad diversity need appropriate model systems to understand the underlying mechanisms and enable development of new therapeutics. Additionally, registration of new substances requires appropriate risk assessment with adequate testing systems to avoid the risk of individuals being harmed, for example, in the working environment. Such risk assessments are usually conducted in animal studies. In view of the 3Rs principle and public skepticism against animal experiments, human alternative methods, such as precision-cut lung slices (PCLS), have been evolving. The present paper describes the ex vivo technique of human PCLS to study the immunomodulatory potential of low-molecular-weight substances, such as ammonium hexachloroplatinate (HClPt). Measured endpoints include viability and local respiratory inflammation, marked by altered secretion of cytokines and chemokines. Pro-inflammatory cytokines, tumor necrosis factor alpha (TNF-α), and interleukin 1 alpha (IL-1α) were significantly increased in human PCLS after exposure to a sub-toxic concentration of HClPt. Even though the technique of PCLS has been substantially optimized over the past decades, its applicability for the testing of immunomodulation is still in development. Therefore, the results presented here are preliminary, even though they show the potential of human PCLS as a valuable tool in respiratory research.
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Affiliation(s)
- Vanessa Neuhaus
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of REBIRTH Cluster of Excellence
| | - Olga Danov
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of REBIRTH Cluster of Excellence
| | - Sebastian Konzok
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of REBIRTH Cluster of Excellence
| | - Helena Obernolte
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of REBIRTH Cluster of Excellence
| | - Susann Dehmel
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of REBIRTH Cluster of Excellence
| | - Peter Braubach
- Institute for Pathology, Hannover Medical School, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH)
| | - Danny Jonigk
- Institute for Pathology, Hannover Medical School, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH)
| | - Hans-Gerd Fieguth
- Division of Thoracic and Vascular Surgery, Klinikum Region Hannover (KRH)
| | - Patrick Zardo
- Department of Cardiothoracic, Transplantation and Vascular Surgery (HTTG), Hannover Medical School, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH)
| | - Gregor Warnecke
- Department of Cardiothoracic, Transplantation and Vascular Surgery (HTTG), Hannover Medical School, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH)
| | - Christian Martin
- Institute of Pharmacology and Toxicology, RWTH Aachen University
| | - Armin Braun
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of REBIRTH Cluster of Excellence; Institute for Immunology, Hannover Medical School
| | - Katherina Sewald
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of REBIRTH Cluster of Excellence;
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26
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Calzetta L, Matera MG, Facciolo F, Cazzola M, Rogliani P. Beclomethasone dipropionate and formoterol fumarate synergistically interact in hyperresponsive medium bronchi and small airways. Respir Res 2018; 19:65. [PMID: 29650006 PMCID: PMC5897944 DOI: 10.1186/s12931-018-0770-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 04/02/2018] [Indexed: 12/15/2022] Open
Abstract
Background Corticosteroids increase the expression of β2-adrenoceptors (β2-ARs) and protect them against down-regulation. Conversely, β2-AR agonists improve the anti-inflammatory action of corticosteroids. Nevertheless, it is still uncertain whether adding a long-acting β2-AR agonist (LABA) to an inhaled corticosteroid (ICS) results in an additive effect, or there is true synergy. Therefore, the aim of this study was to pharmacologically characterize the interaction between the ICS beclomethasone diproprionate (BDP) and the LABA formoterol fumarate (FF) in a validated human ex vivo model of bronchial asthma. Methods Human medium and small airways were stimulated by histamine and treated with different concentrations of BDP and FF, administered alone and in combination at concentration-ratio reproducing ex vivo that of the currently available fixed-dose combination (FDC; BDP/FF 100:6 combination-ratio). Experiments were performed in non-sensitized (NS) and passively sensitized (PS) airways. The pharmacological interaction was assessed by using Bliss Independence and Unified Theory equations. Results BDP/FF synergistically increased the overall bronchorelaxation in NS and PS airways (+ 15.15% ± 4.02%; P < 0.05 vs. additive effect). At low-to-medium concentrations the synergistic interaction was greater in PS than in NS bronchioles (+ 16.68% ± 3.02% and + 7.27% ± 3.05%, respectively). In PS small airways a very strong synergistic interaction (Combination Index: 0.08; + 20.04% ± 2.18% vs. additive effect) was detected for the total concentrations of BDP/FF combination corresponding to 10.6 ng/ml. Conclusion BDP/FF combination synergistically relaxed human bronchi; the extent of such an interaction was very strong at low-to-medium concentrations in PS small airways. Trial registration Not applicable. Electronic supplementary material The online version of this article (10.1186/s12931-018-0770-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Luigino Calzetta
- Unit of Respiratory Medicine, Department of Experimental Medicine and Surgery, University of Rome "Tor Vergata", Via Montpellier 1, 00133, Rome, Italy
| | - Maria Gabriella Matera
- Unit of Pharmacology, Department of Experimental Medicine, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Francesco Facciolo
- Thoracic Surgery Unit, "Regina Elena" National Cancer Institute, Rome, Italy
| | - Mario Cazzola
- Unit of Respiratory Medicine, Department of Experimental Medicine and Surgery, University of Rome "Tor Vergata", Via Montpellier 1, 00133, Rome, Italy
| | - Paola Rogliani
- Unit of Respiratory Medicine, Department of Experimental Medicine and Surgery, University of Rome "Tor Vergata", Via Montpellier 1, 00133, Rome, Italy.
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27
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De Vries RD, Rennick LJ, Duprex WP, De Swart RL. Paramyxovirus Infections in Ex Vivo Lung Slice Cultures of Different Host Species. Methods Protoc 2018; 1:E12. [PMID: 31164557 PMCID: PMC6526457 DOI: 10.3390/mps1020012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 03/11/2018] [Accepted: 03/21/2018] [Indexed: 11/17/2022] Open
Abstract
In vivo experiments in animal models of disease are of crucial importance for viral tropism and pathogenesis studies. However, these experiments must be complemented with in vitro and ex vivo experiments. Here, we describe a protocol for the preparation and ex vivo infection of lung slices from different mammalian host species with various respiratory paramyxoviruses expressing fluorescent reporter proteins, and suggest follow-up experiments including immunohistochemistry, flow cytometry and confocal microscopy.
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Affiliation(s)
- Rory D De Vries
- Department of Viroscience, Erasmus MC, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands.
| | - Linda J Rennick
- Department of Microbiology, Boston University School of Medicine, Boston, MA 02118, USA.
| | - W Paul Duprex
- Department of Microbiology, Boston University School of Medicine, Boston, MA 02118, USA.
| | - Rik L De Swart
- Department of Viroscience, Erasmus MC, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands.
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28
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Herbert J, Thiermann H, Worek F, Wille T. Precision cut lung slices as test system for candidate therapeutics in organophosphate poisoning. Toxicology 2017; 389:94-100. [DOI: 10.1016/j.tox.2017.07.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/14/2017] [Accepted: 07/18/2017] [Indexed: 01/23/2023]
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29
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Bai Y, Krishnamoorthy N, Patel KR, Rosas I, Sanderson MJ, Ai X. Cryopreserved Human Precision-Cut Lung Slices as a Bioassay for Live Tissue Banking. A Viability Study of Bronchodilation with Bitter-Taste Receptor Agonists. Am J Respir Cell Mol Biol 2017; 54:656-63. [PMID: 26550921 DOI: 10.1165/rcmb.2015-0290ma] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Human precision-cut lung slices (hPCLSs) provide a unique ex vivo model for translational research. However, the limited and unpredictable availability of human lung tissue greatly impedes their use. Here, we demonstrate that cryopreservation of hPCLSs facilitates banking of live human lung tissue for routine use. Our results show that cryopreservation had little effect on overall cell viability and vital functions of immune cells, including phagocytes and T lymphocytes. In addition, airway contraction and relaxation in response to specific agonists and antagonists, respectively, were unchanged after cryopreservation. At the subcellular level, cryopreserved hPCLSs maintained Ca(2+)-dependent regulatory mechanisms for the control of airway smooth muscle cell contractility. To exemplify the use of cryopreserved hPCLSs in smooth muscle research, we provide evidence that bitter-taste receptor (TAS2R) agonists relax airways by blocking Ca(2+) oscillations in airway smooth muscle cells. In conclusion, the banking of cryopreserved hPCLSs provides a robust bioassay for translational research of lung physiology and disease.
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Affiliation(s)
- Yan Bai
- 1 Pulmonary, Allergy, Sleep and Critical Care Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Nandini Krishnamoorthy
- 2 Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts; and
| | - Kruti R Patel
- 1 Pulmonary, Allergy, Sleep and Critical Care Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Ivan Rosas
- 2 Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts; and
| | - Michael J Sanderson
- 3 Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Xingbin Ai
- 1 Pulmonary, Allergy, Sleep and Critical Care Medicine, Boston University School of Medicine, Boston, Massachusetts.,2 Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts; and
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30
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Carusela MF, Rubí JM. Entropic rectification and current inversion in a pulsating channel. J Chem Phys 2017. [DOI: 10.1063/1.4982884] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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31
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Rosner SR, Pascoe CD, Blankman E, Jensen CC, Krishnan R, James AL, Elliot JG, Green FH, Liu JC, Seow CY, Park JA, Beckerle MC, Paré PD, Fredberg JJ, Smith MA. The actin regulator zyxin reinforces airway smooth muscle and accumulates in airways of fatal asthmatics. PLoS One 2017; 12:e0171728. [PMID: 28278518 PMCID: PMC5344679 DOI: 10.1371/journal.pone.0171728] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 01/24/2017] [Indexed: 01/21/2023] Open
Abstract
Bronchospasm induced in non-asthmatic human subjects can be easily reversed by a deep inspiration (DI) whereas bronchospasm that occurs spontaneously in asthmatic subjects cannot. This physiological effect of a DI has been attributed to the manner in which a DI causes airway smooth muscle (ASM) cells to stretch, but underlying molecular mechanisms-and their failure in asthma-remain obscure. Using cells and tissues from wild type and zyxin-/- mice we report responses to a transient stretch of physiologic magnitude and duration. At the level of the cytoskeleton, zyxin facilitated repair at sites of stress fiber fragmentation. At the level of the isolated ASM cell, zyxin facilitated recovery of contractile force. Finally, at the level of the small airway embedded with a precision cut lung slice, zyxin slowed airway dilation. Thus, at each level zyxin stabilized ASM structure and contractile properties at current muscle length. Furthermore, when we examined tissue samples from humans who died as the result of an asthma attack, we found increased accumulation of zyxin compared with non-asthmatics and asthmatics who died of other causes. Together, these data suggest a biophysical role for zyxin in fatal asthma.
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Affiliation(s)
- Sonia R. Rosner
- Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Christopher D. Pascoe
- University of British Columbia Center for Heart Lung Innovation, St Paul Hospital, Vancouver, British Columbia, Canada
| | - Elizabeth Blankman
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, United States of America
| | - Christopher C. Jensen
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, United States of America
| | - Ramaswamy Krishnan
- Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America
| | - Alan L. James
- Department of Pulmonary Physiology and Sleep Medicine, West Australian Sleep Disorders Research Institute, Sir Charles Gairdner Hospital, Nedlands, West Australia, Australia
- School of Medicine and Pharmacology, University of Western Australia, Perth, Western Australia, Australia
| | - John G. Elliot
- Department of Pulmonary Physiology and Sleep Medicine, West Australian Sleep Disorders Research Institute, Sir Charles Gairdner Hospital, Nedlands, West Australia, Australia
| | - Francis H. Green
- Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jeffrey C. Liu
- University of British Columbia Center for Heart Lung Innovation, St Paul Hospital, Vancouver, British Columbia, Canada
| | - Chun Y. Seow
- University of British Columbia Center for Heart Lung Innovation, St Paul Hospital, Vancouver, British Columbia, Canada
| | - Jin-Ah Park
- Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Mary C. Beckerle
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, United States of America
- Department of Biology, University of Utah, Salt Lake City, Utah, United States of America
| | - Peter D. Paré
- University of British Columbia Center for Heart Lung Innovation, St Paul Hospital, Vancouver, British Columbia, Canada
| | - Jeffrey J. Fredberg
- Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Mark A. Smith
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, United States of America
- Department of Biology, University of Utah, Salt Lake City, Utah, United States of America
- * E-mail:
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32
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Hiorns JE, Bidan CM, Jensen OE, Gosens R, Kistemaker LEM, Fredberg JJ, Butler JP, Krishnan R, Brook BS. Airway and Parenchymal Strains during Bronchoconstriction in the Precision Cut Lung Slice. Front Physiol 2016; 7:309. [PMID: 27559314 PMCID: PMC4989902 DOI: 10.3389/fphys.2016.00309] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 07/07/2016] [Indexed: 01/25/2023] Open
Abstract
The precision-cut lung slice (PCLS) is a powerful tool for studying airway reactivity, but biomechanical measurements to date have largely focused on changes in airway caliber. Here we describe an image processing tool that reveals the associated spatio-temporal changes in airway and parenchymal strains. Displacements of sub-regions within the PCLS are tracked in phase-contrast movies acquired after addition of contractile and relaxing drugs. From displacement maps, strains are determined across the entire PCLS or along user-specified directions. In a representative mouse PCLS challenged with 10(-4)M methacholine, as lumen area decreased, compressive circumferential strains were highest in the 50 μm closest to the airway lumen while expansive radial strains were highest in the region 50-100 μm from the lumen. However, at any given distance from the airway the strain distribution varied substantially in the vicinity of neighboring small airways and blood vessels. Upon challenge with the relaxant agonist chloroquine, although most strains disappeared, residual positive strains remained a long time after addition of chloroquine, predominantly in the radial direction. Taken together, these findings establish strain mapping as a new tool to elucidate local dynamic mechanical events within the constricting airway and its supporting parenchyma.
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Affiliation(s)
- Jonathan E Hiorns
- School of Mathematical Sciences, University of Nottingham Nottingham, UK
| | - Cécile M Bidan
- Laboratoire Interdisciplinaire de Physique, Centre National de la Recherche Scientifique, Université Grenoble AlpesGrenoble, France; Department of Molecular Pharmacology, University of GroningenGroningen, Netherlands; Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Harvard Medical SchoolBoston, MA, USA
| | - Oliver E Jensen
- School of Mathematics, University of Manchester Manchester, UK
| | - Reinoud Gosens
- Department of Molecular Pharmacology, University of Groningen Groningen, Netherlands
| | - Loes E M Kistemaker
- Department of Molecular Pharmacology, University of Groningen Groningen, Netherlands
| | - Jeffrey J Fredberg
- Department of Environmental Health, Harvard School of Public Health Boston, MA, USA
| | - Jim P Butler
- Department of Environmental Health, Harvard School of Public Health Boston, MA, USA
| | - Ramaswamy Krishnan
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School Boston, MA, USA
| | - Bindi S Brook
- School of Mathematical Sciences, University of Nottingham Nottingham, UK
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33
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Contribution of concentration-sensitive sodium channels to the absorption of alveolar fluid in mice. Respir Physiol Neurobiol 2016; 231:45-54. [PMID: 27259686 DOI: 10.1016/j.resp.2016.05.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 04/29/2016] [Accepted: 05/29/2016] [Indexed: 01/11/2023]
Abstract
The concentration-sensitive sodium channel (Nac) is activated by an increase in the extracellular sodium concentration. Although the expression of Nac in alveolar type II epithelial cells (AEC II) has been reported previously, the physiological role of Nac in the lung has not been established. We characterized Nac expression and examined amiloride-insensitive sodium transport mediated by Nac in mouse lung. Immunofluorescence studies revealed that Nac did not colocalize with either aquaporin 5 or cystic fibrosis transmembrane conductance regulator, but partially colocalized with the epithelial sodium channel γ-subunit. Immunoelectron microscopy studies showed that Nac localized at the basolateral membrane of pulmonary microvascular endothelial cells (PMVECs). Nac mRNA and protein were expressed in PMVECs isolated from the lungs of mice. Image analysis indicated that sodium influx into the alveolar wall was dependent on increases in extracellular sodium concentration. We conclude that Nac expressed in PMVECs and AEC II contributes to the reabsorption of sodium via an amiloride-insensitive pathway during alveolar fluid clearance.
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Khan MA. Dynamics of airway response in lung microsections: a tool for studying airway-extra cellular matrix interactions. J Biomed Sci 2016; 23:43. [PMID: 27176036 PMCID: PMC4865010 DOI: 10.1186/s12929-016-0263-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 05/06/2016] [Indexed: 01/27/2023] Open
Abstract
The biological configuration of extracellular matrix (ECM) plays a key role in how mechanical interactions of the airway with its parenchymal attachments affect the dynamics of airway responses in different pulmonary disorders including asthma, emphysema and chronic bronchitis. It is now recognized that mechanical interactions between airway tissue and ECM play a key regulatory role on airway physiology and kinetics that can lead to the reorganization and remodeling of airway connective tissue. A connective tissue is composed of airway smooth muscle cells (ASM) and the ECM, which includes variety of glycoproteins and therefore the extent of interactions between ECM and ASM affects airway dynamics during exacerbations of major pulmonary disorders. Measurement of the velocity and magnitude of airway closure or opening provide important insights into the functions of the airway contractile apparatus and the interactions with its surrounding connective tissues. This review highlights suitability of lung microsection technique in studying measurements of airway dynamics (narrowing/opening) and associated structural distortions in airway compartments.
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Affiliation(s)
- Mohammad Afzal Khan
- Department of Comparative Medicine, King Faisal Specialist Hospital and Research Centre, MBC 03, P.O. Box 3354, Riyadh, 11211, Kingdom of Saudi Arabiana.
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35
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Ding H, Jiang H, Hou Z. Entropic transport without external force in confined channel with oscillatory boundary. J Chem Phys 2015; 143:244119. [DOI: 10.1063/1.4939081] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Huai Ding
- Department of Chemical Physics & Hefei National Laboratory for Physical Sciences at Microscales, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Huijun Jiang
- Department of Chemical Physics & Hefei National Laboratory for Physical Sciences at Microscales, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhonghuai Hou
- Department of Chemical Physics & Hefei National Laboratory for Physical Sciences at Microscales, University of Science and Technology of China, Hefei, Anhui 230026, China
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36
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Donovan C, Seow HJ, Royce SG, Bourke JE, Vlahos R. Alteration of Airway Reactivity and Reduction of Ryanodine Receptor Expression by Cigarette Smoke in Mice. Am J Respir Cell Mol Biol 2015; 53:471-8. [DOI: 10.1165/rcmb.2014-0400oc] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Mizuta K, Zhang Y, Mizuta F, Hoshijima H, Shiga T, Masaki E, Emala CW. Novel identification of the free fatty acid receptor FFAR1 that promotes contraction in airway smooth muscle. Am J Physiol Lung Cell Mol Physiol 2015; 309:L970-82. [PMID: 26342087 DOI: 10.1152/ajplung.00041.2015] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 08/31/2015] [Indexed: 02/03/2023] Open
Abstract
Obesity is one of the major risk factors for asthma. Previous studies have demonstrated that free fatty acid levels are elevated in the plasma of obese individuals. Medium- and long-chain free fatty acids act as endogenous ligands for the free fatty acid receptors FFAR1/GPR40 and FFAR4/GPR120, which couple to Gq proteins. We investigated whether FFAR1 and FFAR4 are expressed on airway smooth muscle and whether they activate Gq-coupled signaling and modulate airway smooth muscle tone. We detected the protein expression of FFAR1 and FFAR4 in freshly dissected native human and guinea pig airway smooth muscle and cultured human airway smooth muscle (HASM) cells by immunoblotting and immunohistochemistry. The long-chain free fatty acids (oleic acid and linoleic acid) and GW9508 (FFAR1/FFAR4 dual agonist) dose-dependently stimulated transient intracellular Ca(2+) concentration ([Ca(2+)]i) increases and inositol phosphate synthesis in HASM cells. Downregulation of FFAR1 or FFAR4 in HASM cells by small interfering RNA led to a significant inhibition of the long-chain free fatty acids-induced transient [Ca(2+)]i increases. Oleic acid, linoleic acid, or GW9508 stimulated stress fiber formation in HASM cells, potentiated acetylcholine-contracted guinea pig tracheal rings, and attenuated the relaxant effect of isoproterenol after an acetylcholine-induced contraction. In contrast, TUG-891 (FFAR4 agonist) did not induce the stress fiber formation or potentiate acetylcholine-induced contraction. These results suggest that FFAR1 is the functionally dominant free fatty acid receptor in both human and guinea pig airway smooth muscle. The free fatty acid sensors expressed on airway smooth muscle could be an important modulator of airway smooth muscle tone.
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Affiliation(s)
- Kentaro Mizuta
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, New York; Department of Dento-oral Anesthesiology, Tohoku University Graduate School of Dentistry, Sendai, Japan; and
| | - Yi Zhang
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, New York
| | - Fumiko Mizuta
- Department of Dento-oral Anesthesiology, Tohoku University Graduate School of Dentistry, Sendai, Japan; and
| | - Hiroshi Hoshijima
- Department of Dento-oral Anesthesiology, Tohoku University Graduate School of Dentistry, Sendai, Japan; and
| | - Toshiya Shiga
- Department of Anesthesiology, Chemotherapy Research Institute, Kaken Hospital, International University of Health and Welfare, Chiba, Japan
| | - Eiji Masaki
- Department of Dento-oral Anesthesiology, Tohoku University Graduate School of Dentistry, Sendai, Japan; and
| | - Charles W Emala
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, New York
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Song X, Zhao C, Dai C, Ren Y, An N, Wen H, Pan LI, Cheng M, Zhang Y. Suppression of the increasing level of acetylcholine-stimulated intracellular Ca 2+ in guinea pig airway smooth muscle cells by mabuterol. Biomed Rep 2015; 3:778-786. [PMID: 26623015 PMCID: PMC4660599 DOI: 10.3892/br.2015.502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 06/10/2015] [Indexed: 11/05/2022] Open
Abstract
The present study aimed to establish an effective method for the in vitro culture of guinea pig airway smooth muscle (ASM) cells, and also investigate the suppressive effect of mabuterol hydrochloride (Mab) on the increased level of intracellular Ca2+ in ASM cells induced with acetylcholine (Ach). Two different methods, i.e. with or without collagenase to pretreat tracheal tissues, were applied to the manufacture of ASM cells. Cell viability was determined with the 3-(4,5-dimethylthinazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Immunocytochemistry and immunofluorescence were used for the identification of ASM cells. Different concentration levels (10-3, 10-4, 10-5, 10-6 and 10-7 mmol/l) of Mab were administered 5 min before Ach (10-4 M) treatment, respectively. The Ca2+ fluorescent probe, Fura-2/AM or Fluo-3/AM were applied to the inspection of Ca2+ fluorescent intensity with Varioskan Flash, immunocytometry systems and an inverted system microscope, respectively. The results showed that the fresh method, in which isolated tracheal tissues were previously treated with collagenase for 20 min, was more advantageous for the preparation of guinea pig ASM cells compared to when the enzyme was not used. The time for the ASM cells to initially migrate out of the 'tissue blocks' and the culture having to be generated due to the thick cell density was significantly less. On identification with immunocytochemistry or immunofluorescent staining, >95% of the cells were ASM cells. Mab (10-3-10-7 mmol/l) significantly suppressed the elevation of intracellular Ca2+ induced by Ach in a concentration-dependent manner. The inhibitory rates of intracellular Ca2+ by different concentrations of Mab, from low to high, were 14.93, 24.73, 40.06, 48.54 and 57.13%, respectively, when Varioskan Flash was used for determination. In conclusion, this novel method has a shorter harvesting period for ASM cells. Mab can suppress the increasing level of intracellular Ca2+ induced by Ach in guinea pig ASM cells. Further investigation into the precise mechanisms of action is required.
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Affiliation(s)
- Xirui Song
- Department of Pharmacology, School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, P.R. China
| | - Chao Zhao
- Department of Pharmacology, School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, P.R. China
| | - Cailing Dai
- Department of Pharmacology, School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, P.R. China
| | - Yanxin Ren
- Department of Pharmacology, School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, P.R. China
| | - Nan An
- Department of Pharmacology, School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, P.R. China
| | - Huimin Wen
- Department of Pharmacology, School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, P.R. China
| | - L I Pan
- Department of Medicine Chemistry, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, P.R. China ; Key Laboratory of Structure Based Drug Design and Discovery, Ministry of Education, Shenyang, Liaoning 110016, P.R. China
| | - Maosheng Cheng
- Department of Medicine Chemistry, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, P.R. China ; Key Laboratory of Structure Based Drug Design and Discovery, Ministry of Education, Shenyang, Liaoning 110016, P.R. China
| | - Yuyang Zhang
- Department of Pharmacology, School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, P.R. China
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Mayer CA, Martin RJ, MacFarlane PM. Increased airway reactivity in a neonatal mouse model of continuous positive airway pressure. Pediatr Res 2015; 78:145-51. [PMID: 25950451 PMCID: PMC4506702 DOI: 10.1038/pr.2015.90] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 02/11/2015] [Indexed: 11/10/2022]
Abstract
BACKGROUND Continuous positive airway pressure (CPAP) is a primary form of respiratory support used in the intensive care of preterm infants, but its long-term effects on airway (AW) function are unknown. METHODS We developed a neonatal mouse model of CPAP treatment to determine whether it modifies later AW reactivity. Unanesthetized spontaneously breathing mice were fitted with a mask to deliver CPAP (6 cmH2O, 3 h/day) for 7 consecutive days starting at postnatal day 1. AW reactivity to methacholine was assessed using the in vitro living lung slice preparation. RESULTS One week of CPAP increased AW responsiveness to methacholine in male, but not female mice, compared to untreated control animals. The AW hyper-reactivity of male mice persisted for 2 wk (at P21) after CPAP treatment ended. Four days of CPAP, however, did not significantly increase AW reactivity. Females also exhibited AW hyper-reactivity at P21, suggesting a delayed response to early (7 d) CPAP treatment. The effects of 7 d of CPAP on hyper-reactivity to methacholine were unique to smaller AWs whereas larger ones were relatively unaffected. CONCLUSION These data may be important to our understanding of the potential long-term consequences of neonatal CPAP therapy used in the intensive care of preterm infants.
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Affiliation(s)
- Catherine A. Mayer
- Department of Pediatrics, Division of Neonatology, Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, OH, USA 44106
| | - Richard J. Martin
- Department of Pediatrics, Division of Neonatology, Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, OH, USA 44106
| | - Peter M. MacFarlane
- Department of Pediatrics, Division of Neonatology, Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, OH, USA 44106,Corresponding Author: Peter MacFarlane. Department of Pediatrics, Case Western Reserve University, Rainbow Babies & Children’s Hospital, 11100 Euclid Avenue, Cleveland, Ohio 44106-6010. USA, Phone: 216-368-4628/Fax: 216-844-3380,
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40
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Ding H, Jiang H, Hou Z. Entropic stochastic resonance without external force in oscillatory confined space. J Chem Phys 2015; 142:194109. [DOI: 10.1063/1.4921372] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Huai Ding
- Department of Chemical Physics and Hefei National Laboratory for Physical Sciences at Microscales, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Huijun Jiang
- Department of Chemical Physics and Hefei National Laboratory for Physical Sciences at Microscales, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhonghuai Hou
- Department of Chemical Physics and Hefei National Laboratory for Physical Sciences at Microscales, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, China
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41
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Yoo HY, Park SJ, Kim HJ, Kim WK, Kim SJ. Integrative understanding of hypoxic pulmonary vasoconstriction using in vitro models: from ventilated/perfused lung to single arterial myocyte. Integr Med Res 2014; 3:180-188. [PMID: 28664095 PMCID: PMC5481745 DOI: 10.1016/j.imr.2014.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 08/27/2014] [Accepted: 08/27/2014] [Indexed: 10/25/2022] Open
Abstract
Contractile response of a pulmonary artery (PA) to hypoxia (hypoxic pulmonary vasoconstriction; HPV) is a unique physiological reaction. HPV is beneficial for the optimal distribution of blood flow to differentially ventilated alveolar regions in the lung, thereby preventing systemic hypoxemia. Numerous in vitro studies have been conducted to elucidate the mechanisms underlying HPV. These studies indicate that PA smooth muscle cells (PASMCs) sense lowers the oxygen partial pressure (PO2) and contract under hypoxia. As for the PO2-sensing molecules, a variety of ion channels in PASMCs had been suggested. Nonetheless, the modulator(s) of the ion channels alone cannot mimic HPV in the experiments using PA segments and/or isolated organs. We compared the hypoxic responses of PASMCs, PAs, lung slices, and total lungs using a variety of methods (e.g., patch-clamp technique, isometric contraction measurement, video analysis of precision-cut lung slices, and PA pressure measurement in ventilated/perfused lungs). In this review, the relevant results are compared to provide a comprehensive understanding of HPV. Integration of the influences from surrounding tissues including blood cells as well as the hypoxic regulation of ion channels in PASMCs are indispensable for insights into HPV and other related clinical conditions.
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Affiliation(s)
- Hae Young Yoo
- Red Cross College of Nursing, Chung-Ang University, Seoul, Korea
| | - Su Jung Park
- Department of Physiology, College of Medicine, Seoul National University, Seoul, Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Korea.,Ischemic/Hypoxic Disease Institute, College of Medicine, Seoul National University, Seoul, Korea
| | - Hae Jin Kim
- Department of Physiology, College of Medicine, Seoul National University, Seoul, Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Korea.,Ischemic/Hypoxic Disease Institute, College of Medicine, Seoul National University, Seoul, Korea
| | - Woo Kyung Kim
- Department of Internal Medicine and Channelopathy Research Institute (CRC), College of Medicine, Dongguk University, Goyang, Korea
| | - Sung Joon Kim
- Department of Physiology, College of Medicine, Seoul National University, Seoul, Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Korea.,Ischemic/Hypoxic Disease Institute, College of Medicine, Seoul National University, Seoul, Korea
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42
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Abstract
The clinical manifestations of asthma are caused by obstruction of the conducting airways of the lung. Two airway cell types are critical for asthma pathogenesis: epithelial cells and smooth muscle cells. Airway epithelial cells, which are the first line of defense against inhaled pathogens and particles, initiate airway inflammation and produce mucus, an important contributor to airway obstruction. The other main cause of airway obstruction is contraction of airway smooth muscle. Complementary experimental approaches involving cultured cells, animal models, and human clinical studies have provided many insights into diverse mechanisms that contribute to airway epithelial and smooth muscle cell pathology in this complex disease.
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Affiliation(s)
- David J Erle
- Lung Biology Center and Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
| | - Dean Sheppard
- Lung Biology Center and Department of Medicine, University of California, San Francisco, San Francisco, CA 94143
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43
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Lelkes E, Headley MB, Thornton EE, Looney MR, Krummel MF. The spatiotemporal cellular dynamics of lung immunity. Trends Immunol 2014; 35:379-86. [PMID: 24974157 DOI: 10.1016/j.it.2014.05.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 05/19/2014] [Accepted: 05/21/2014] [Indexed: 01/08/2023]
Abstract
The lung is a complex structure that is interdigitated with immune cells. Understanding the 4D process of normal and defective lung function and immunity has been a centuries-old problem. Challenges intrinsic to the lung have limited adequate microscopic evaluation of its cellular dynamics in real time, until recently. Because of emerging technologies, we now recognize alveolar-to-airway transport of inhaled antigen. We understand the nature of neutrophil entry during lung injury and are learning more about cellular interactions during inflammatory states. Insights are also accumulating in lung development and the metastatic niche of the lung. Here we assess the developing technology of lung imaging, its merits for studies of pathophysiology and areas where further advances are needed.
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Affiliation(s)
- Efrat Lelkes
- Department of Pediatrics, University of California-San Francisco, 513 Parnassus Avenue, HSW 518, San Francisco, CA 94143-0511, USA; Department of Pathology, University of California-San Francisco, 513 Parnassus Avenue, HSW 518, San Francisco, CA 94143-0511, USA
| | - Mark B Headley
- Department of Pathology, University of California-San Francisco, 513 Parnassus Avenue, HSW 518, San Francisco, CA 94143-0511, USA
| | - Emily E Thornton
- Department of Pathology, University of California-San Francisco, 513 Parnassus Avenue, HSW 518, San Francisco, CA 94143-0511, USA
| | - Mark R Looney
- Department of Medicine, University of California-San Francisco, 513 Parnassus Avenue, HSE 1355A, San Francisco, CA 94143-0511, USA
| | - Matthew F Krummel
- Department of Pathology, University of California-San Francisco, 513 Parnassus Avenue, HSW 518, San Francisco, CA 94143-0511, USA.
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Koopmans T, Anaparti V, Castro-Piedras I, Yarova P, Irechukwu N, Nelson C, Perez-Zoghbi J, Tan X, Ward JPT, Wright DB. Ca2+ handling and sensitivity in airway smooth muscle: emerging concepts for mechanistic understanding and therapeutic targeting. Pulm Pharmacol Ther 2014; 29:108-20. [PMID: 24831539 DOI: 10.1016/j.pupt.2014.05.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Revised: 03/28/2014] [Accepted: 05/01/2014] [Indexed: 02/01/2023]
Abstract
Free calcium ions within the cytosol serve as a key secondary messenger system for a diverse range of cellular processes. Dysregulation of cytosolic Ca(2+) handling in airway smooth muscle (ASM) has been implicated in asthma, and it has been hypothesised that this leads, at least in part, to associated changes in both the architecture and function of the lung. Significant research is therefore directed towards furthering our understanding of the mechanisms which control ASM cytosolic calcium, in addition to those regulating the sensitivity of its downstream effector targets to calcium. Key aspects of the recent developments in this field were discussed at the 8th Young Investigators' Symposium on Smooth Muscle (2013, Groningen, The Netherlands), and are outlined in this review.
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Affiliation(s)
- T Koopmans
- Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands
| | - V Anaparti
- Department of Immunology, University of Manitoba, Winnipeg, Canada
| | - I Castro-Piedras
- Cell Physiology and Molecular Biophysics, Texas Tech University Health Sciences Center, TX, USA
| | - P Yarova
- Cardiff School of Biosciences, Cardiff University, UK
| | - N Irechukwu
- Division of Asthma, Allergy and Lung Biology, King's College London, UK
| | - C Nelson
- School of Science & Technology, Nottingham Trent University, Nottingham, UK
| | - J Perez-Zoghbi
- Cell Physiology and Molecular Biophysics, Texas Tech University Health Sciences Center, TX, USA
| | - X Tan
- Lung Inflammation & Infection Lab, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - J P T Ward
- Division of Asthma, Allergy and Lung Biology, King's College London, UK
| | - D B Wright
- Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands; Division of Asthma, Allergy and Lung Biology, King's College London, UK.
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45
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Experimental lens capsular bag model for posterior capsule opacification. Cell Tissue Res 2014; 357:101-8. [DOI: 10.1007/s00441-014-1870-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 02/28/2014] [Indexed: 10/25/2022]
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46
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Assessment of immunotoxicity induced by chemicals in human precision-cut lung slices (PCLS). Toxicol In Vitro 2014; 28:588-99. [PMID: 24412833 DOI: 10.1016/j.tiv.2013.12.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 12/17/2013] [Accepted: 12/23/2013] [Indexed: 11/23/2022]
Abstract
Occupational asthma can be induced by a number of chemicals at the workplace. Risk assessment of potential sensitizers is mostly performed in animal experiments. With increasing public demand for alternative methods, human precision-cut lung slices (PCLS) have been developed as an ex vivo model. Human PCLS were exposed to increasing concentrations of 20 industrial chemicals including 4 respiratory allergens, 11 contact allergens, and 5 non-sensitizing irritants. Local respiratory irritation was characterized and expressed as 75% (EC25) and 50% (EC50) cell viability with respect to controls. Dose-response curves of all chemicals except for phenol were generated. Local respiratory inflammation was quantified by measuring the production of cytokines and chemokines. TNF-α and IL-1α were increased significantly in human PCLS after exposure to the respiratory sensitizers trimellitic anhydride (TMA) and ammonium hexachloroplatinate (HClPt) at subtoxic concentrations, while contact sensitizers and non-sensitizing irritants failed to induce the release of these cytokines to the same extent. Interestingly, significant increases in T(H)1/T(H)2 cytokines could be detected only after exposure to HClPt at a subtoxic concentration. In conclusion, allergen-induced cytokines were observed but not considered as biomarkers for the differentiation between respiratory and contact sensitizers. Our preliminary results show an ex vivo model which might be used for prediction of chemical-induced toxicity, but is due to its complex three-dimensional structure not applicable for a simple screening of functional and behavior changes of certain cell populations such as dendritic cells and T-cells in response to allergens.
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47
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Abstract
Live lung imaging has spanned the discovery of capillaries in the frog lung by Malpighi to the current use of single and multiphoton imaging of intravital and isolated perfused lung preparations incorporating fluorescent molecular probes and transgenic reporter mice. Along the way, much has been learned about the unique microcirculation of the lung, including immune cell migration and the mechanisms by which cells at the alveolar-capillary interface communicate with each other. In this review, we highlight live lung imaging techniques as applied to the role of mitochondria in lung immunity, mechanisms of signal transduction in lung compartments, studies on the composition of alveolar wall liquid, and neutrophil and platelet trafficking in the lung under homeostatic and inflammatory conditions. New applications of live lung imaging and the limitations of current techniques are discussed.
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Affiliation(s)
- Mark R. Looney
- Departments of Medicine and Laboratory Medicine, University of California, San Francisco, California 94143
| | - Jahar Bhattacharya
- Division of Pulmonary Allergy and Critical Care, Department of Medicine, and Department of Physiology & Cellular Biophysics, Columbia University College of Physicians & Surgeons, New York, New York 10032
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48
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Castro-Piedras I, Perez-Zoghbi JF. Hydrogen sulphide inhibits Ca2+ release through InsP3 receptors and relaxes airway smooth muscle. J Physiol 2013; 591:5999-6015. [PMID: 24144878 DOI: 10.1113/jphysiol.2013.257790] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Hydrogen sulphide (H2S) is a signalling molecule that appears to regulate diverse cell physiological process in several organs and systems including vascular and airway smooth muscle cell (SMC) contraction. Decreases in endogenous H2S synthesis have been associated with the development of cardiovascular diseases and asthma. Here we investigated the mechanism of airway SMC relaxation induced by H2S in small intrapulmonary airways using mouse lung slices and confocal and phase-contrast video microscopy. Exogenous H2S donor Na2S (100 μm) reversibly inhibited Ca(2+) release and airway contraction evoked by inositol-1,4,5-trisphosphate (InsP3) uncaging in airway SMCs. Similarly, InsP3-evoked Ca(2+) release and contraction was inhibited by endogenous H2S precursor l-cysteine (10 mm) but not by l-serine (10 mm) or either amino acid in the presence of dl-propargylglycine (PPG). Consistent with the inhibition of Ca(2+) release through InsP3 receptors (InsP3Rs), Na2S reversibly inhibited acetylcholine (ACh)-induced Ca(2+) oscillations in airway SMCs. In addition, Na2S, the H2S donor GYY-4137, and l-cysteine caused relaxation of airways pre-contracted with either ACh or 5-hydroxytryptamine (5-HT). Na2S-induced airway relaxation was resistant to a guanylyl cyclase inhibitor (ODQ) and a protein kinase G inhibitor (Rp-8-pCPT-cGMPS). The effects of H2S on InsP3-evoked Ca(2+) release and contraction as well as on the relaxation of agonist-contracted airways were mimicked by the thiol-reducing agent dithiothreitol (DTT, 10 mm) and inhibited by the oxidizing agent diamide (30 μm). These studies indicate that H2S causes airway SMC relaxation by inhibiting Ca(2+) release through InsP3Rs and consequent reduction of agonist-induced Ca(2+) oscillations in SMCs. The results suggest a novel role for endogenously produced H2S that involves the modulation of InsP3-evoked Ca(2+) release - a cell-signalling system of critical importance for many physiological and pathophysiological processes.
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Affiliation(s)
- Isabel Castro-Piedras
- J. F. Perez-Zoghbi: Department of Cell Physiology and Molecular Biophysics, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79423, USA.
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49
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Castro-Piedras I, Perez-Zoghbi JF. Hydrogen sulphide inhibits Ca2+ release through InsP3 receptors and relaxes airway smooth muscle. J Physiol 2013. [PMID: 24144878 DOI: 10.1113/jphysiol.2013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Hydrogen sulphide (H2S) is a signalling molecule that appears to regulate diverse cell physiological process in several organs and systems including vascular and airway smooth muscle cell (SMC) contraction. Decreases in endogenous H2S synthesis have been associated with the development of cardiovascular diseases and asthma. Here we investigated the mechanism of airway SMC relaxation induced by H2S in small intrapulmonary airways using mouse lung slices and confocal and phase-contrast video microscopy. Exogenous H2S donor Na2S (100 μm) reversibly inhibited Ca(2+) release and airway contraction evoked by inositol-1,4,5-trisphosphate (InsP3) uncaging in airway SMCs. Similarly, InsP3-evoked Ca(2+) release and contraction was inhibited by endogenous H2S precursor l-cysteine (10 mm) but not by l-serine (10 mm) or either amino acid in the presence of dl-propargylglycine (PPG). Consistent with the inhibition of Ca(2+) release through InsP3 receptors (InsP3Rs), Na2S reversibly inhibited acetylcholine (ACh)-induced Ca(2+) oscillations in airway SMCs. In addition, Na2S, the H2S donor GYY-4137, and l-cysteine caused relaxation of airways pre-contracted with either ACh or 5-hydroxytryptamine (5-HT). Na2S-induced airway relaxation was resistant to a guanylyl cyclase inhibitor (ODQ) and a protein kinase G inhibitor (Rp-8-pCPT-cGMPS). The effects of H2S on InsP3-evoked Ca(2+) release and contraction as well as on the relaxation of agonist-contracted airways were mimicked by the thiol-reducing agent dithiothreitol (DTT, 10 mm) and inhibited by the oxidizing agent diamide (30 μm). These studies indicate that H2S causes airway SMC relaxation by inhibiting Ca(2+) release through InsP3Rs and consequent reduction of agonist-induced Ca(2+) oscillations in SMCs. The results suggest a novel role for endogenously produced H2S that involves the modulation of InsP3-evoked Ca(2+) release - a cell-signalling system of critical importance for many physiological and pathophysiological processes.
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Affiliation(s)
- Isabel Castro-Piedras
- J. F. Perez-Zoghbi: Department of Cell Physiology and Molecular Biophysics, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79423, USA.
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Paramyxovirus infections in ex vivo lung slice cultures of different host species. J Virol Methods 2013; 193:159-65. [DOI: 10.1016/j.jviromet.2013.06.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 05/31/2013] [Accepted: 06/08/2013] [Indexed: 11/18/2022]
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