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Luo J, Liu H, Li DKJ, Song B, Zhang Y. Repression of the expression of proinflammatory genes by mitochondrial transcription factor A is linked to its alternative splicing regulation in human lung epithelial cells. BMC Immunol 2021; 22:74. [PMID: 34876009 PMCID: PMC8650232 DOI: 10.1186/s12865-021-00464-2] [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: 02/04/2021] [Accepted: 10/29/2021] [Indexed: 12/13/2022] Open
Abstract
Background Mitochondrial transcription factor A (TFAM) is associated with a number of neurodegenerative diseases and also with asthma. TFAM deficiency-induced mitochondrial DNA stress primes the antiviral innate immune response in mouse embryonic fibroblasts. However, the role of TFAM in asthma related inflammation remains obscure. The purpose of this study was to investigate the regulatory mechanism of TFAM in asthma. Results In this study, we overexpressed TFAM in human lung epithelial cells (A549), then obtained the TFAM-regulated transcriptome by Illumina sequencing technology. Transcriptome analysis revealed that TFAM overexpression down-regulated and up-regulated the expression of 642 and 169 differentially expressed genes (DEGs), respectively. The TFAM-repressed genes were strongly enriched in cytokine-mediated signaling pathway, type I interferon- and INF-γ-mediated signaling pathways, and viral response pathways. We also revealed that 2563 alternative splicing events in 1796 alternative splicing genes (ASGs) were de-regulated upon TFAM overexpression. These TFAM-responding ASGs were enriched in DNA repair, nerve growth factor receptor signaling pathway, and also transcription regulation. Further analysis revealed that the promoters of TFAM-repressed DEGs were enriched by DNA binding motifs of transcription factors whose alternative splicing was regulated by TFAM. Conclusions These findings suggest that TFAM regulates not only immune response gene expression in human lung epithelial cells, but also pre-mRNA alternative splicing which may mediate transcriptional regulation; this TFAM-centered gene regulation network could be targeted in developing therapies against various diseases. Supplementary Information The online version contains supplementary material available at 10.1186/s12865-021-00464-2.
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Affiliation(s)
- Jinsong Luo
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.
| | - Hong Liu
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Daniel K Jun Li
- ABLife BioBigData Institute, Wuhan, Hubei, China.,Department of Biology and Biotechnology, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, Hubei, China
| | - Bin Song
- ABLife BioBigData Institute, Wuhan, Hubei, China
| | - Yi Zhang
- ABLife BioBigData Institute, Wuhan, Hubei, China
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2
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Li J, Tiwari A, Mirzakhani H, Wang AL, Kho AT, McGeachie MJ, Litonjua AA, Weiss ST, Tantisira KG. Circulating MicroRNA: Incident Asthma Prediction and Vitamin D Effect Modification. J Pers Med 2021; 11:jpm11040307. [PMID: 33923455 PMCID: PMC8073146 DOI: 10.3390/jpm11040307] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 04/03/2021] [Accepted: 04/07/2021] [Indexed: 12/23/2022] Open
Abstract
Of children with recurrent wheezing in early childhood, approximately half go on to develop asthma. MicroRNAs have been described as excellent non-invasive biomarkers due to their prognostic utility. We hypothesized that circulating microRNAs can predict incident asthma and that that prediction might be modified by vitamin D. We selected 75 participants with recurrent wheezing at 3 years old from the Vitamin D Antenatal Asthma Reduction Trial (VDAART). Plasma samples were collected at age 3 and sequenced for small RNA-Seq. The read counts were normalized and filtered by depth and coverage. Logistic regression was employed to associate miRNAs at age 3 with asthma status at age 5. While the overall effect of miRNA on asthma occurrence was weak, we identified 38 miRNAs with a significant interaction effect with vitamin D and 32 miRNAs with a significant main effect in the high vitamin D treatment group in VDAART. We validated the VDAART results in Project Viva for both the main effect and interaction effect. Meta-analysis was performed on both cohorts to obtain the combined effect and a logistic regression model was used to predict incident asthma at age 7 in Project Viva. Of the 23 overlapped miRNAs in the stratified and interaction analysis above, 9 miRNAs were replicated in Project Viva with strong effect size and remained in the meta-analysis of the two populations. The target genes of the 9 miRNAs were enriched for asthma-related Kyoto Encyclopedia of Genes and Genomes (KEGG) signaling pathways. Using logistic regression, microRNA hsa-miR-574-5p had a good prognostic ability for incident asthma prognosis with an area under the receiver operating characteristic (AUROC) of 0.83. In conclusion, miRNAs appear to be good biomarkers of incident asthma, but only when vitamin D level is considered.
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Affiliation(s)
- Jiang Li
- Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China;
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (A.T.); (H.M.); (A.L.W.); (A.T.K.); (M.J.M.); (S.T.W.)
| | - Anshul Tiwari
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (A.T.); (H.M.); (A.L.W.); (A.T.K.); (M.J.M.); (S.T.W.)
| | - Hooman Mirzakhani
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (A.T.); (H.M.); (A.L.W.); (A.T.K.); (M.J.M.); (S.T.W.)
| | - Alberta L. Wang
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (A.T.); (H.M.); (A.L.W.); (A.T.K.); (M.J.M.); (S.T.W.)
| | - Alvin T. Kho
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (A.T.); (H.M.); (A.L.W.); (A.T.K.); (M.J.M.); (S.T.W.)
- Computational Health Informatics Program, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Michael J. McGeachie
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (A.T.); (H.M.); (A.L.W.); (A.T.K.); (M.J.M.); (S.T.W.)
| | - Augusto A. Litonjua
- Division of Pediatric Pulmonary Medicine, Golisano Children’s Hospital at Strong, University of Rochester Medical Center, Rochester, NY 14642, USA;
| | - Scott T. Weiss
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (A.T.); (H.M.); (A.L.W.); (A.T.K.); (M.J.M.); (S.T.W.)
| | - Kelan G. Tantisira
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (A.T.); (H.M.); (A.L.W.); (A.T.K.); (M.J.M.); (S.T.W.)
- Division of Pediatric Respiratory Medicine, Rady Children’s Hospital San Diego, University of California, San Diego, CA 92123, USA
- Correspondence: ; Tel.: +1-(858)-966-5846; Fax: +1-(858)-966-8457
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3
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Esteves P, Blanc L, Celle A, Dupin I, Maurat E, Amoedo N, Cardouat G, Ousova O, Gales L, Bellvert F, Begueret H, Thumerel M, Dupuy JW, Desbenoit N, Marthan R, Girodet PO, Rossignol R, Berger P, Trian T. Crucial role of fatty acid oxidation in asthmatic bronchial smooth muscle remodelling. Eur Respir J 2021; 58:13993003.04252-2020. [PMID: 33833033 DOI: 10.1183/13993003.04252-2020] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 03/26/2021] [Indexed: 11/05/2022]
Abstract
BACKGROUND Bronchial smooth muscle (BSM) remodelling in asthma is related to an increased mitochondrial biogenesis and enhanced BSM cell proliferation in asthma. Since (i) mitochondria produce the highest levels of cellular energy and (ii) fatty acid beta-oxidation is the most powerful way to produce ATP, we hypothesized that, in asthmatic BSM cells, energetic metabolism is shifted towards the beta-oxidation of fatty acids. OBJECTIVES We aimed to characterize BSM cell metabolism in asthma both in vitro and ex vivo to identify a novel target for reducing BSM cell proliferation. METHODS Twenty-one asthmatic and 31 non-asthmatic patients were enrolled. We used metabolomic and proteomic approaches to study BSM cells. Oxidative stress, ATP synthesis, fatty acid endocytosis, metabolite production, metabolic capabilities, mitochondrial networks, cell proliferation and apoptosis were assessed on BSM cells. Fatty acid content was assessed in vivo using MALDI-spectrometry imaging. RESULTS Asthmatic BSM cells were characterized by an increased rate of mitochondrial respiration with a stimulated ATP production and mitochondrial β-oxidation. Fatty acid consumption was increased in asthmatic BSM both in vitro and ex vivo. Proteome remodelling of asthmatic BSM occurred via 2 canonical mitochondrial pathways. The levels of CPT2 and LDL-receptor, which internalize fatty acids through mitochondrial and cell membranes, respectively, were both increased in asthmatic BSM cells. Blocking CPT2 or LDL-receptor drastically and specifically reduced asthmatic BSM cell proliferation. CONCLUSION This study demonstrates a metabolic switch towards mitochondrial beta-oxidation in asthmatic BSM and identifies fatty acid metabolism as a new key target to reduce BSM remodelling in asthma.
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Affiliation(s)
- Pauline Esteves
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France
| | - Landry Blanc
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,CNRS, UMR5248, Institute of Chemistry & Biology of Membranes & Nano objects, Functional Genomics Center (CGFB), Proteomics Facility, Université de Bordeaux, Bordeaux, France
| | - Alexis Celle
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France
| | - Isabelle Dupin
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France
| | - Elise Maurat
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France
| | - Nivea Amoedo
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France
| | - Guillaume Cardouat
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France
| | - Olga Ousova
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France
| | - Lara Gales
- CNRS 5504, INRA 792, INSA Toulouse, Toulouse Biotechnology Institute, Bio & Chemical Engineering, Université de Toulouse, MetaToul, Toulouse, France
| | - Florian Bellvert
- CNRS 5504, INRA 792, INSA Toulouse, Toulouse Biotechnology Institute, Bio & Chemical Engineering, Université de Toulouse, MetaToul, Toulouse, France
| | - Hugues Begueret
- Service d'exploration fonctionnelle respiratoire, Service de chirurgie thoracique, Service d'anatomopathologie, CIC 1401, CHU de Bordeaux, Bordeaux, France
| | - Matthieu Thumerel
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France.,Service d'exploration fonctionnelle respiratoire, Service de chirurgie thoracique, Service d'anatomopathologie, CIC 1401, CHU de Bordeaux, Bordeaux, France
| | - Jean-William Dupuy
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,CNRS, UMR5248, Institute of Chemistry & Biology of Membranes & Nano objects, Functional Genomics Center (CGFB), Proteomics Facility, Université de Bordeaux, Bordeaux, France
| | - Nicolas Desbenoit
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,CNRS, UMR5248, Institute of Chemistry & Biology of Membranes & Nano objects, Functional Genomics Center (CGFB), Proteomics Facility, Université de Bordeaux, Bordeaux, France
| | - Roger Marthan
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France.,Service d'exploration fonctionnelle respiratoire, Service de chirurgie thoracique, Service d'anatomopathologie, CIC 1401, CHU de Bordeaux, Bordeaux, France
| | - Pierre-Olivier Girodet
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France.,Service d'exploration fonctionnelle respiratoire, Service de chirurgie thoracique, Service d'anatomopathologie, CIC 1401, CHU de Bordeaux, Bordeaux, France
| | - Rodrigue Rossignol
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France
| | - Patrick Berger
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France.,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France.,Service d'exploration fonctionnelle respiratoire, Service de chirurgie thoracique, Service d'anatomopathologie, CIC 1401, CHU de Bordeaux, Bordeaux, France.,Co-last author
| | - Thomas Trian
- Centre de Recherche Cardio-thoracique de Bordeaux, U1045, MRGM, Functional Genomics Center (CGFB), CIC 1401, CELLOMET, Univ-Bordeaux, Bordeaux, France .,Centre de Recherche Cardio-thoracique de Bordeaux, U1045, U1211, CIC 1401, INSERM, Bordeaux, France.,Co-last author
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4
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Beaufils F, Esteves P, Enaud R, Germande O, Celle A, Marthan R, Trian T, Fayon M, Berger P. Mitochondria are involved in bronchial smooth muscle remodeling in severe preschool wheezers. J Allergy Clin Immunol 2021; 148:645-651.e11. [PMID: 33819511 DOI: 10.1016/j.jaci.2021.03.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 02/01/2021] [Accepted: 03/09/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Bronchial remodeling is a key feature of asthma that is already present in preschoolers with wheezing. Moreover, bronchial smooth muscle (BSM) remodeling at preschool age is predictive of asthma at school age. However, the mechanism responsible for BSM remodeling in preschoolers with wheezing remains totally unknown. In contrast, in adult asthma, BSM remodeling has been associated with an increase in BSM cell proliferation related to increased mitochondrial mass and biogenesis triggered by an altered calcium homeostasis. Indeed, BSM cell proliferation was decreased in vitro by the calcium channel blocker gallopamil. OBJECTIVE Our aim was to investigate the mechanisms involved in BSM cell proliferation in preschoolers with severe wheezing, with special attention to the role of mitochondria and calcium signaling. METHODS Bronchial tissue samples obtained from 12 preschool controls without wheezing and 10 preschoolers with severe wheezing were used to measure BSM mass and establish primary BSM cell cultures. BSM cell proliferation was assessed by manual counting and flow cytometry, ATP content was assessed by bioluminescence, mitochondrial respiration was assessed by using either the Seahorse or Oroboros technique, mitochondrial mass and biogenesis were assessed by immunoblotting, and calcium response to carbachol was assessed by confocal microscopy. The effect of gallopamil was also evaluated. RESULTS BSM mass, cell proliferation, ATP content, mitochondrial respiration, mass and biogenesis, and calcium response were all increased in preschoolers with severe wheezing compared with in the controls. Gallopamil significantly decreased BSM mitochondrial biogenesis and mass, as well as cell proliferation. CONCLUSION Mitochondria are key players in BSM cell proliferation in preschoolers with severe wheezing and could represent a potential target to treat BSM remodeling at an early stage of the disease.
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Affiliation(s)
- Fabien Beaufils
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; CHU de Bordeaux, Service d'exploration fonctionnelle respiratoire, Service de Pédiatrie médicale, Bordeaux, France
| | - Pauline Esteves
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France
| | - Raphaël Enaud
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; CHU de Bordeaux, Service d'exploration fonctionnelle respiratoire, Service de Pédiatrie médicale, Bordeaux, France
| | - Ophélie Germande
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France
| | - Alexis Celle
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France
| | - Roger Marthan
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; CHU de Bordeaux, Service d'exploration fonctionnelle respiratoire, Service de Pédiatrie médicale, Bordeaux, France
| | - Thomas Trian
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France
| | - Michael Fayon
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; CHU de Bordeaux, Service d'exploration fonctionnelle respiratoire, Service de Pédiatrie médicale, Bordeaux, France
| | - Patrick Berger
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France; CHU de Bordeaux, Service d'exploration fonctionnelle respiratoire, Service de Pédiatrie médicale, Bordeaux, France.
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5
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Fang L, Roth M, S'ng CT, Tamm M, Han B, Hoang BX. Zinc salicylate reduces airway smooth muscle cells remodelling by blocking mTOR and activating p21 (Waf1/Cip1). J Nutr Biochem 2020; 89:108563. [PMID: 33326841 DOI: 10.1016/j.jnutbio.2020.108563] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 08/22/2020] [Accepted: 11/24/2020] [Indexed: 12/17/2022]
Abstract
Asthma is characterized by chronic inflammation and tissue remodeling of the airways. Remodeling is resistant to pharmaceutical therapies. This study investigated the effect of zinc salicylate-methylsulfonylmethane (Zn-Sal-MSM) compared to zinc salicylate (Zn-Sal), or sodium salicylate (Na-Sal), or zinc chloride (ZnCl2) on remodeling parameters of human airway smooth muscle cells (ASMC). Human ASMC obtained from asthma patients (n=7) and non-asthma controls (n=7) were treated with one of the reagents. Cell proliferation and viability was determined by direct cell counts and MTT assay. The expression of and phosphorylation proteins was determined by Western-blotting, ELISA, immunofluorescence, and mass spectrometry. Extracellular matrix deposition by ELISA. Zn-Sal-MSM, Zn-Sal and Na-Sal (0.1-100 µg/mL) significantly reduced PDGF-BB-induced proliferation in a concentration dependent manner, while ZnCl2 was toxic. The reduced proliferation correlated with increased expression of the cell cycle inhibitor p21(Waf1/Cip1), and reduced activity of Akt, p70S6K, and Erk1/2. Zn-Sal-MSM, Zn-Sal, but not Na-Sal reduced the deposition of fibronectin and collagen type-I. Furthermore, Zn-Sal-MSM reduced the mitochondria specific COX4 expression. Mass spectrometry indicated that Zn-Sal-MSM modified the expression of several signaling proteins and zinc-dependent enzymes. In conclusion, Zn-Sal-MSM and Zn-Sal potentially prevent airway wall remodeling in asthma by inhibition of both the Erk1/2 and mTOR signaling pathways.
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Affiliation(s)
- Lei Fang
- Pulmonary Cell Research/Pneumology, Department of Biomedicine/Internal Medicine, University and University Hospital Basel, Basel, Switzerland
| | - Michael Roth
- Pulmonary Cell Research/Pneumology, Department of Biomedicine/Internal Medicine, University and University Hospital Basel, Basel, Switzerland.
| | | | - Michael Tamm
- Pulmonary Cell Research/Pneumology, Department of Biomedicine/Internal Medicine, University and University Hospital Basel, Basel, Switzerland
| | - Bo Han
- Cordoba-Nimni Tissue Engineering and Drug Discovery Lab, Department of Surgery, University of Southern California, Los Angeles, California
| | - Ba Xuan Hoang
- Cordoba-Nimni Tissue Engineering and Drug Discovery Lab, Department of Surgery, University of Southern California, Los Angeles, California
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6
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Uddin MA, Barabutis N. P53 in the impaired lungs. DNA Repair (Amst) 2020; 95:102952. [PMID: 32846356 PMCID: PMC7437512 DOI: 10.1016/j.dnarep.2020.102952] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 08/13/2020] [Indexed: 12/12/2022]
Abstract
Our laboratory is focused on investigating the supportive role of P53 towards the maintenance of lung homeostasis. Acute lung injury, acute respiratory distress syndrome, chronic obstructive pulmonary disease, pulmonary fibrosis, bronchial asthma, pulmonary arterial hypertension, pneumonia and tuberculosis are respiratory pathologies, associated with dysfunctions of this endothelium defender (P53). Herein we review the evolving role of P53 towards the aforementioned inflammatory disorders, to potentially reveal new therapeutic possibilities in pulmonary disease.
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Affiliation(s)
- Mohammad A Uddin
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, Louisiana 71201, USA
| | - Nektarios Barabutis
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, Louisiana 71201, USA.
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7
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McAlinden KD, Naidu V, Sohal SS, Sharma P. In utero Exposure to Nicotine Containing Electronic Cigarettes Increases the Risk of Allergic Asthma in Female Offspring. Am J Physiol Lung Cell Mol Physiol 2020; 319:L1061-L1061. [PMID: 32783625 DOI: 10.1152/ajplung.00230.2019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
E-cigarettes (eCig) are being considered as an alternative to quit cigarette smoking while their long-term effect on lung pathophysiology are unknown. Maternal eCig-vaping may be promoted and considered as a safer cigarette smoking-replacement during pregnancy thus needing further assessment. Using murine models of in utero vaping and allergic asthma with complementary in vitro experiments we tested whether maternal eCig vaping enhances features of allergic asthma in offspring. Female BALB/c mice were exposed to either eCig vapor (± nicotine) or room air. Female offspring from these mothers were subjected to an ovalbumin (OVA)-induced allergic asthma model. Lung function and airway inflammation was assessed. Tissues were histologically assessed with H&E, Periodic Acid-Schiff and Masson's trichrome. Mitochondrial homeostasis protein expression was measured using immunohistochemistry while human airway smooth muscle (ASM) and Beas-2B cells were used to further measure cellular function and mitochondrial respiration. Allergen-challenge in mice lead to significant increase in airway inflammation, development of airway hyperresponsiveness (AHR) and increase in mucus and airway wall thickening (hallmark features of allergic asthma). Allergic asthma features were significantly enhanced in offspring from eCig (+Nicotine)-exposed mothers and were mainly reliant upon Th2-dependent inflammation with complementary changes in mitochondrial homeostasis. Further, in vitro data demonstrated that eCig (±Nicotine)-exposure impaired airway cell homeostasis and perturbed mitochondrial function. Collectively, maternal eCig vaping enhanced and worsened features of allergic asthma and this could partly be attributed to aberrant mitochondrial function.
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Affiliation(s)
| | | | - Sukhwinder Singh Sohal
- Respiratory Translational Research Group, School of Health Sciences, University of Tasmania, Australia
| | - Pawan Sharma
- Medicine, Thomas Jefferson University, United States
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8
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Beaufils F, Marthan R, Berger P. Bnip3 as a potential target to treat airway smooth muscle remodeling in asthma? Am J Physiol Lung Cell Mol Physiol 2020; 318:L212. [PMID: 31910033 DOI: 10.1152/ajplung.00431.2019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Fabien Beaufils
- INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, Université de Bordeaux, Bordeaux, France.,Service d'Explorations Fonctionnelles Respiratoires, Centre Hospitalier Universitaire de Bordeaux, Pessac, France
| | - Roger Marthan
- INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, Université de Bordeaux, Bordeaux, France.,Service d'Explorations Fonctionnelles Respiratoires, Centre Hospitalier Universitaire de Bordeaux, Pessac, France
| | - Patrick Berger
- INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, Université de Bordeaux, Bordeaux, France.,Service d'Explorations Fonctionnelles Respiratoires, Centre Hospitalier Universitaire de Bordeaux, Pessac, France
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9
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Pan S, Deshpande DA. Reply to Letter to the Editor: "Bnip3 as a potential target to treat airway smooth muscle remodeling in asthma?". Am J Physiol Lung Cell Mol Physiol 2020; 318:L213-L214. [PMID: 31910034 DOI: 10.1152/ajplung.00470.2019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Shi Pan
- Center for Translational Medicine, Jane and Leonard Korman Lung Center, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Deepak A Deshpande
- Center for Translational Medicine, Jane and Leonard Korman Lung Center, Thomas Jefferson University, Philadelphia, Pennsylvania
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10
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Esteves P, Celle A, Berger P, Trian T. [Bronchial smooth muscle mitochondria: A new target for asthma therapy?]. Rev Mal Respir 2020; 37:201-204. [PMID: 32139106 DOI: 10.1016/j.rmr.2020.02.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 01/12/2020] [Indexed: 12/30/2022]
Abstract
The main purpose of this review is to highlight mitochondria as a new therapeutic target to prevent bronchial smooth muscle (BSM) remodeling in asthma. Severe asthmatic patients, representing 5-10% of all asthmatics, are characterized by an increased BSM mass which is highly correlated with the severity of the disease and the rate of exacerbations. None of the current asthma therapies are effective in reducing BSM remodelling. This review, based on the current literature, reports the role of mitochondria in BSM, particularly in calcium signaling.
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Affiliation(s)
- P Esteves
- Université Bordeaux, centre de recherche cardio-thoracique de Bordeaux, U1045, CIC 1401, 33600 Pessac, France; Inserm, centre de recherche cardio-thoracique de Bordeaux, U1045, CIC 1401, 33600 Pessac, France.
| | - A Celle
- Université Bordeaux, centre de recherche cardio-thoracique de Bordeaux, U1045, CIC 1401, 33600 Pessac, France; Inserm, centre de recherche cardio-thoracique de Bordeaux, U1045, CIC 1401, 33600 Pessac, France
| | - P Berger
- Université Bordeaux, centre de recherche cardio-thoracique de Bordeaux, U1045, CIC 1401, 33600 Pessac, France; Inserm, centre de recherche cardio-thoracique de Bordeaux, U1045, CIC 1401, 33600 Pessac, France; CHU de Bordeaux, service d'exploration fonctionnelle respiratoire, CIC 1401, 33604 Pessac, France
| | - T Trian
- Université Bordeaux, centre de recherche cardio-thoracique de Bordeaux, U1045, CIC 1401, 33600 Pessac, France; Inserm, centre de recherche cardio-thoracique de Bordeaux, U1045, CIC 1401, 33600 Pessac, France
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11
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Wang ZN, Su RN, Yang BY, Yang KX, Yang LF, Yan Y, Chen ZG. Potential Role of Cellular Senescence in Asthma. Front Cell Dev Biol 2020; 8:59. [PMID: 32117985 PMCID: PMC7026390 DOI: 10.3389/fcell.2020.00059] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 01/22/2020] [Indexed: 12/18/2022] Open
Abstract
Cellular senescence is a complicated process featured by irreversible cell cycle arrest and senescence-associated secreted phenotype (SASP), resulting in accumulation of senescent cells, and low-grade inflammation. Cellular senescence not only occurs during the natural aging of normal cells, but also can be accelerated by various pathological factors. Cumulative studies have shown the role of cellular senescence in the pathogenesis of chronic lung diseases including chronic obstructive pulmonary diseases (COPD) and idiopathic pulmonary fibrosis (IPF) by promoting airway inflammation and airway remodeling. Recently, great interest has been raised in the involvement of cellular senescence in asthma. Limited but valuable data has indicated accelerating cellular senescence in asthma. This review will compile current findings regarding the underlying relationship between cellular senescence and asthma, mainly through discussing the potential mechanisms of cellular senescence in asthma, the impact of senescent cells on the pathobiology of asthma, and the efficiency and feasibility of using anti-aging therapies in asthmatic patients.
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Affiliation(s)
- Zhao-Ni Wang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Ruo-Nan Su
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Bi-Yuan Yang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ke-Xin Yang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Li-Fen Yang
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yan Yan
- Guangdong Provincial Key Laboratory of Biomedical Imaging, Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China.,Center for Interventional Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China
| | - Zhuang-Gui Chen
- Department of Pediatrics, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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12
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Fang L, Sun Q, Roth M. Immunologic and Non-Immunologic Mechanisms Leading to Airway Remodeling in Asthma. Int J Mol Sci 2020; 21:ijms21030757. [PMID: 31979396 PMCID: PMC7037330 DOI: 10.3390/ijms21030757] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 01/18/2020] [Accepted: 01/20/2020] [Indexed: 02/07/2023] Open
Abstract
Asthma increases worldwide without any definite reason and patient numbers double every 10 years. Drugs used for asthma therapy relax the muscles and reduce inflammation, but none of them inhibited airway wall remodeling in clinical studies. Airway wall remodeling can either be induced through pro-inflammatory cytokines released by immune cells, or direct binding of IgE to smooth muscle cells, or non-immunological stimuli. Increasing evidence suggests that airway wall remodeling is initiated early in life by epigenetic events that lead to cell type specific pathologies, and modulate the interaction between epithelial and sub-epithelial cells. Animal models are only available for remodeling in allergic asthma, but none for non-allergic asthma. In human asthma, the mechanisms leading to airway wall remodeling are not well understood. In order to improve the understanding of this asthma pathology, the definition of “remodeling” needs to be better specified as it summarizes a wide range of tissue structural changes. Second, it needs to be assessed if specific remodeling patterns occur in specific asthma pheno- or endo-types. Third, the interaction of the immune cells with tissue forming cells needs to be assessed in both directions; e.g., do immune cells always stimulate tissue cells or are inflamed tissue cells calling immune cells to the rescue? This review aims to provide an overview on immunologic and non-immunologic mechanisms controlling airway wall remodeling in asthma.
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Affiliation(s)
- Lei Fang
- Pulmonary Cell Research & Pneumology, University Hospital & University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland;
| | - Qinzhu Sun
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China;
| | - Michael Roth
- Pulmonary Cell Research & Pneumology, University Hospital & University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland;
- Correspondence: ; Tel.: +41-61-265-2337
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13
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Allard B, Levardon H, Esteves P, Celle A, Maurat E, Thumerel M, Girodet PO, Trian T, Berger P. Asthmatic Bronchial Smooth Muscle Increases CCL5-Dependent Monocyte Migration in Response to Rhinovirus-Infected Epithelium. Front Immunol 2020; 10:2998. [PMID: 31969885 PMCID: PMC6956660 DOI: 10.3389/fimmu.2019.02998] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 12/06/2019] [Indexed: 12/26/2022] Open
Abstract
Asthma exacerbations, a major concern in therapeutic strategies, are most commonly triggered by viral respiratory infections, particularly with human rhinovirus (HRV). Infection of bronchial epithelial (BE) cells by HRV triggers inflammation, notably monocyte recruitment. The increase of bronchial smooth muscle (BSM) mass in asthma, a hallmark of bronchial remodeling, is associated with the annual rate of exacerbations. The aim of the present study was to assess whether or not BSM could increase monocyte migration induced by HRV-infected BE. We used an advanced in vitro model of co-culture of human BE cells in air-liquid interface with human BSM cells from control and asthmatic patients. Inflammation triggered by HRV infection (HRV-16, MOI 0.1, 1 h) was assessed at 24 h with transcriptomic analysis and multiplex ELISA. In vitro CD14+ monocyte migration was evaluated with modified Boyden chamber. Results showed that HRV-induced monocyte migration was substantially increased in the co-culture model with asthmatic BSM, compared with control BSM. Furthermore, the well-known monocyte migration chemokine, CCL2, was not involved in this increased migration. However, we demonstrated that CCL5 was further increased in the asthmatic BSM co-culture and that anti-CCL5 blocking antibody significantly decreased monocyte migration induced by HRV-infected BE. Taken together, our findings highlight a new role of BSM cells in HRV-induced inflammation and provide new insights in mucosal immunology which may open new opportunities for prevention and/or treatment of asthma exacerbation.
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Affiliation(s)
- Benoit Allard
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, Département de Pharmacologie, CIC 1401, Bordeaux, France.,INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France
| | - Hannah Levardon
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, Département de Pharmacologie, CIC 1401, Bordeaux, France.,INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France
| | - Pauline Esteves
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, Département de Pharmacologie, CIC 1401, Bordeaux, France.,INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France
| | - Alexis Celle
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, Département de Pharmacologie, CIC 1401, Bordeaux, France.,INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France
| | - Elise Maurat
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, Département de Pharmacologie, CIC 1401, Bordeaux, France.,INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France
| | - Matthieu Thumerel
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, Département de Pharmacologie, CIC 1401, Bordeaux, France.,INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France.,CHU de Bordeaux, Service d'Exploration Fonctionnelle Respiratoire, Service de Chirurgie Thoracique, CIC 1401, Pessac, France
| | - Pierre Olivier Girodet
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, Département de Pharmacologie, CIC 1401, Bordeaux, France.,INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France.,CHU de Bordeaux, Service d'Exploration Fonctionnelle Respiratoire, Service de Chirurgie Thoracique, CIC 1401, Pessac, France
| | - Thomas Trian
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, Département de Pharmacologie, CIC 1401, Bordeaux, France.,INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France
| | - Patrick Berger
- Univ-Bordeaux, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, Département de Pharmacologie, CIC 1401, Bordeaux, France.,INSERM, Centre de Recherche Cardio-thoracique de Bordeaux, U1045, CIC 1401, Bordeaux, France.,CHU de Bordeaux, Service d'Exploration Fonctionnelle Respiratoire, Service de Chirurgie Thoracique, CIC 1401, Pessac, France
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14
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Hudon Thibeault AA, Laprise C. Cell-Specific DNA Methylation Signatures in Asthma. Genes (Basel) 2019; 10:E932. [PMID: 31731604 PMCID: PMC6896152 DOI: 10.3390/genes10110932] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/08/2019] [Accepted: 11/12/2019] [Indexed: 12/18/2022] Open
Abstract
Asthma is a complex trait, often associated with atopy. The genetic contribution has been evidenced by familial occurrence. Genome-wide association studies allowed for associating numerous genes with asthma, as well as identifying new loci that have a minor contribution to its phenotype. Considering the role of environmental exposure on asthma development, an increasing amount of literature has been published on epigenetic modifications associated with this pathology and especially on DNA methylation, in an attempt to better understand its missing heritability. These studies have been conducted in different tissues, but mainly in blood or its peripheral mononuclear cells. However, there is growing evidence that epigenetic changes that occur in one cell type cannot be directly translated into another one. In this review, we compare alterations in DNA methylation from different cells of the immune system and of the respiratory tract. The cell types in which data are obtained influences the global status of alteration of DNA methylation in asthmatic individuals compared to control (an increased or a decreased DNA methylation). Given that several genes were cell-type-specific, there is a great need for comparative studies on DNA methylation from different cells, but from the same individuals in order to better understand the role of epigenetics in asthma pathophysiology.
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Affiliation(s)
- Andrée-Anne Hudon Thibeault
- Département des sciences fondamentales, Université du Québec à Chicoutimi (UQAC), Saguenay, G7H 2B1 QC, Canada;
- Centre intersectoriel en santé durable (CISD), Université du Québec à Chicoutimi (UQAC), Saguenay, G7H 2B1 QC, Canada
- Quebec Respiratory Health Network, Quebec, G1V 4G5 QC, Canada
| | - Catherine Laprise
- Département des sciences fondamentales, Université du Québec à Chicoutimi (UQAC), Saguenay, G7H 2B1 QC, Canada;
- Centre intersectoriel en santé durable (CISD), Université du Québec à Chicoutimi (UQAC), Saguenay, G7H 2B1 QC, Canada
- Quebec Respiratory Health Network, Quebec, G1V 4G5 QC, Canada
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15
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Hough KP, Trevor JL, Strenkowski JG, Wang Y, Chacko BK, Tousif S, Chanda D, Steele C, Antony VB, Dokland T, Ouyang X, Zhang J, Duncan SR, Thannickal VJ, Darley-Usmar VM, Deshane JS. Exosomal transfer of mitochondria from airway myeloid-derived regulatory cells to T cells. Redox Biol 2018; 18:54-64. [PMID: 29986209 PMCID: PMC6031096 DOI: 10.1016/j.redox.2018.06.009] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 06/21/2018] [Accepted: 06/23/2018] [Indexed: 12/11/2022] Open
Abstract
Chronic inflammation involving both innate and adaptive immune cells is implicated in the pathogenesis of asthma. Intercellular communication is essential for driving and resolving inflammatory responses in asthma. Emerging studies suggest that extracellular vesicles (EVs) including exosomes facilitate this process. In this report, we have used a range of approaches to show that EVs contain markers of mitochondria derived from donor cells which are capable of sustaining a membrane potential. Further, we propose that these participate in intercellular communication within the airways of human subjects with asthma. Bronchoalveolar lavage fluid of both healthy volunteers and asthmatics contain EVs with encapsulated mitochondria; however, the % HLA-DR+ EVs containing mitochondria and the levels of mitochondrial DNA within EVs were significantly higher in asthmatics. Furthermore, mitochondria are present in exosomes derived from the pro-inflammatory HLA-DR+ subsets of airway myeloid-derived regulatory cells (MDRCs), which are known regulators of T cell responses in asthma. Exosomes tagged with MitoTracker Green, or derived from MDRCs transduced with CellLight Mitochondrial GFP were found in recipient peripheral T cells using a co-culture system, supporting direct exosome-mediated cell-cell transfer. Importantly, exosomally transferred mitochondria co-localize with the mitochondrial network and generate reactive oxygen species within recipient T cells. These findings support a potential novel mechanism of cell-cell communication involving exosomal transfer of mitochondria and the bioenergetic and/or redox regulation of target cells.
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Affiliation(s)
- Kenneth P Hough
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Jennifer L Trevor
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - John G Strenkowski
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Yong Wang
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Balu K Chacko
- Mitochondrial Medicine Laboratory, Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Sultan Tousif
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Diptiman Chanda
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Chad Steele
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Veena B Antony
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Terje Dokland
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Xiaosen Ouyang
- Mitochondrial Medicine Laboratory, Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Jianhua Zhang
- Mitochondrial Medicine Laboratory, Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Steven R Duncan
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Victor J Thannickal
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Victor M Darley-Usmar
- Mitochondrial Medicine Laboratory, Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Jessy S Deshane
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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16
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Qu J, Li Y, Zhong W, Gao P, Hu C. Recent developments in the role of reactive oxygen species in allergic asthma. J Thorac Dis 2017; 9:E32-E43. [PMID: 28203435 DOI: 10.21037/jtd.2017.01.05] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Allergic asthma has a global prevalence, morbidity, and mortality. Many environmental factors, such as pollutants and allergens, are highly relevant to allergic asthma. The most important pathological symptom of allergic asthma is airway inflammation. Accordingly, the unique role of reactive oxygen species (ROS) had been identified as a main reason for this respiratory inflammation. Many studies have shown that inhalation of different allergens can promote ROS generation. Recent studies have demonstrated that several pro-inflammatory mediators are responsible for the development of allergic asthma. Among these mediators, endogenous or exogenous ROS are responsible for the airway inflammation of allergic asthma. Furthermore, several inflammatory cells induce ROS and allergic asthma development. Airway inflammation, airway hyper-responsiveness, tissue injury, and remodeling can be induced by excessive ROS production in animal models. Based on investigations of allergic asthma and ROS formation mechanisms, we have identified several novel anti-inflammatory therapeutic treatments. This review describes the recent data linking ROS to the pathogenesis of allergic asthma.
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Affiliation(s)
- Jingjing Qu
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha 410008, China;; Division of Allergy and Clinical Immunology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Yuanyuan Li
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Wen Zhong
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Peisong Gao
- Division of Allergy and Clinical Immunology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Chengping Hu
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha 410008, China
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