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Airway Epithelial Cells Drive Airway Smooth Muscle Cell Phenotype Switching to the Proliferative and Pro-inflammatory Phenotype

The increased mass of airway smooth muscle (ASM) in the airways of asthmatic patients may contribute to the pathology of this disease by increasing the capacity for airway narrowing. Evidence for the airway epithelium as a participant in ASM remodeling is accruing. To investigate mechanisms by which...

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Autores principales: O’Sullivan, M. J., Jang, J. H., Panariti, A., Bedrat, A., Ijpma, G., Lemos, B., Park, J. A., Lauzon, A. M., Martin, J. G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8290262/
https://www.ncbi.nlm.nih.gov/pubmed/34295265
http://dx.doi.org/10.3389/fphys.2021.687654
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author O’Sullivan, M. J.
Jang, J. H.
Panariti, A.
Bedrat, A.
Ijpma, G.
Lemos, B.
Park, J. A.
Lauzon, A. M.
Martin, J. G.
author_facet O’Sullivan, M. J.
Jang, J. H.
Panariti, A.
Bedrat, A.
Ijpma, G.
Lemos, B.
Park, J. A.
Lauzon, A. M.
Martin, J. G.
author_sort O’Sullivan, M. J.
collection PubMed
description The increased mass of airway smooth muscle (ASM) in the airways of asthmatic patients may contribute to the pathology of this disease by increasing the capacity for airway narrowing. Evidence for the airway epithelium as a participant in ASM remodeling is accruing. To investigate mechanisms by which airway epithelial cells induce ASM cell (ASMC) proliferation, we have employed a co-culture model to explore markers of ASMC proliferative phenotype. Co-culture with epithelial cells led to incorporation of bromodeoxyuridine into ASMCs, indicating augmented proliferation and an associated increase in mRNA of the pro-proliferative co-transcription factor Elk1. Although the mitogen heparin-binding epidermal growth factor (HB-EGF) was augmented in the co-culture supernatant, the ASMC epidermal growth factor receptor (EGFR), an effector of HB-EGF induced proliferation, did not mediate epithelial-induced proliferation. The co-culture increased the expression of ASMC mRNA for the pro-inflammatory cytokines IL-6 and IL-8 as well as the pro-proliferative microRNA miR-210. The transcriptional repressor Max-binding protein (Mnt), a putative target of miR-210, was transcriptionally repressed in co-cultured ASMCs. Together, these data indicate that the airway epithelium-induced proliferative phenotype of ASMCs is not driven by EGFR signaling, but rather may be dependent on miR210 targeting of tumor suppressor Mnt.
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spelling pubmed-82902622021-07-21 Airway Epithelial Cells Drive Airway Smooth Muscle Cell Phenotype Switching to the Proliferative and Pro-inflammatory Phenotype O’Sullivan, M. J. Jang, J. H. Panariti, A. Bedrat, A. Ijpma, G. Lemos, B. Park, J. A. Lauzon, A. M. Martin, J. G. Front Physiol Physiology The increased mass of airway smooth muscle (ASM) in the airways of asthmatic patients may contribute to the pathology of this disease by increasing the capacity for airway narrowing. Evidence for the airway epithelium as a participant in ASM remodeling is accruing. To investigate mechanisms by which airway epithelial cells induce ASM cell (ASMC) proliferation, we have employed a co-culture model to explore markers of ASMC proliferative phenotype. Co-culture with epithelial cells led to incorporation of bromodeoxyuridine into ASMCs, indicating augmented proliferation and an associated increase in mRNA of the pro-proliferative co-transcription factor Elk1. Although the mitogen heparin-binding epidermal growth factor (HB-EGF) was augmented in the co-culture supernatant, the ASMC epidermal growth factor receptor (EGFR), an effector of HB-EGF induced proliferation, did not mediate epithelial-induced proliferation. The co-culture increased the expression of ASMC mRNA for the pro-inflammatory cytokines IL-6 and IL-8 as well as the pro-proliferative microRNA miR-210. The transcriptional repressor Max-binding protein (Mnt), a putative target of miR-210, was transcriptionally repressed in co-cultured ASMCs. Together, these data indicate that the airway epithelium-induced proliferative phenotype of ASMCs is not driven by EGFR signaling, but rather may be dependent on miR210 targeting of tumor suppressor Mnt. Frontiers Media S.A. 2021-07-06 /pmc/articles/PMC8290262/ /pubmed/34295265 http://dx.doi.org/10.3389/fphys.2021.687654 Text en Copyright © 2021 O’Sullivan, Jang, Panariti, Bedrat, Ijpma, Lemos, Park, Lauzon and Martin. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Physiology
O’Sullivan, M. J.
Jang, J. H.
Panariti, A.
Bedrat, A.
Ijpma, G.
Lemos, B.
Park, J. A.
Lauzon, A. M.
Martin, J. G.
Airway Epithelial Cells Drive Airway Smooth Muscle Cell Phenotype Switching to the Proliferative and Pro-inflammatory Phenotype
title Airway Epithelial Cells Drive Airway Smooth Muscle Cell Phenotype Switching to the Proliferative and Pro-inflammatory Phenotype
title_full Airway Epithelial Cells Drive Airway Smooth Muscle Cell Phenotype Switching to the Proliferative and Pro-inflammatory Phenotype
title_fullStr Airway Epithelial Cells Drive Airway Smooth Muscle Cell Phenotype Switching to the Proliferative and Pro-inflammatory Phenotype
title_full_unstemmed Airway Epithelial Cells Drive Airway Smooth Muscle Cell Phenotype Switching to the Proliferative and Pro-inflammatory Phenotype
title_short Airway Epithelial Cells Drive Airway Smooth Muscle Cell Phenotype Switching to the Proliferative and Pro-inflammatory Phenotype
title_sort airway epithelial cells drive airway smooth muscle cell phenotype switching to the proliferative and pro-inflammatory phenotype
topic Physiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8290262/
https://www.ncbi.nlm.nih.gov/pubmed/34295265
http://dx.doi.org/10.3389/fphys.2021.687654
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