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Qin W, Brands X, van’t Veer C, F. de Vos A, Sirard JC, J. T. H. Roelofs J, P. Scicluna B, van der Poll T. Bronchial epithelial DNA methyltransferase 3b dampens pulmonary immune responses during Pseudomonas aeruginosa infection. PLoS Pathog 2021; 17:e1009491. [PMID: 33793661 PMCID: PMC8043394 DOI: 10.1371/journal.ppat.1009491] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 04/13/2021] [Accepted: 03/22/2021] [Indexed: 01/01/2023] Open
Abstract
DNA methyltransferase (Dnmt)3b mediates de novo DNA methylation and modulation of Dnmt3b in respiratory epithelial cells has been shown to affect the expression of multiple genes. Respiratory epithelial cells provide a first line of defense against pulmonary pathogens and play a crucial role in the immune response during pneumonia caused by Pseudomonas (P.) aeruginosa, a gram-negative bacterium that expresses flagellin as an important virulence factor. We here sought to determine the role of Dntm3b in respiratory epithelial cells in immune responses elicited by P. aeruginosa. DNMT3B expression was reduced in human bronchial epithelial (BEAS-2B) cells as well as in primary human and mouse bronchial epithelial cells grown in air liquid interface upon exposure to P. aeruginosa (PAK). Dnmt3b deficient human bronchial epithelial (BEAS-2B) cells produced more CXCL1, CXCL8 and CCL20 than control cells when stimulated with PAK, flagellin-deficient PAK (PAKflic) or flagellin. Dnmt3b deficiency reduced DNA methylation at exon 1 of CXCL1 and enhanced NF-ĸB p65 binding to the CXCL1 promoter. Mice with bronchial epithelial Dntm3b deficiency showed increased Cxcl1 mRNA expression in bronchial epithelium and CXCL1 protein release in the airways during pneumonia caused by PAK, which was associated with enhanced neutrophil recruitment and accelerated bacterial clearance; bronchial epithelial Dnmt3b deficiency did not modify responses during pneumonia caused by PAKflic or Klebsiella pneumoniae (an un-flagellated gram-negative bacterium). Dnmt3b deficiency in type II alveolar epithelial cells did not affect mouse pulmonary defense against PAK infection. These results suggest that bronchial epithelial Dnmt3b impairs host defense during Pseudomonas induced pneumonia, at least in part, by dampening mucosal responses to flagellin.
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Affiliation(s)
- Wanhai Qin
- Center of Experimental & Molecular Medicine, Amsterdam University Medical Centers, location Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Xanthe Brands
- Center of Experimental & Molecular Medicine, Amsterdam University Medical Centers, location Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Cornelis van’t Veer
- Center of Experimental & Molecular Medicine, Amsterdam University Medical Centers, location Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Alex F. de Vos
- Center of Experimental & Molecular Medicine, Amsterdam University Medical Centers, location Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Jean-Claude Sirard
- Université de Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, Lille, France
| | - Joris J. T. H. Roelofs
- Department of Pathology, Amsterdam University Medical Centers, location Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Brendon P. Scicluna
- Center of Experimental & Molecular Medicine, Amsterdam University Medical Centers, location Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
- Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Amsterdam University Medical Centers, location Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Tom van der Poll
- Center of Experimental & Molecular Medicine, Amsterdam University Medical Centers, location Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
- Division of Infectious Diseases, Amsterdam University Medical Centers, location Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
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Grdović N, Rajić J, Petrović SM, Dinić S, Uskoković A, Mihailović M, Jovanović JA, Tolić A, Pucar A, Milašin J, Vidaković M. Association of CXCL12 gene promoter methylation with periodontitis in patients with diabetes mellitus type 2. Arch Oral Biol 2016; 72:124-133. [PMID: 27580404 DOI: 10.1016/j.archoralbio.2016.08.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 08/19/2016] [Accepted: 08/21/2016] [Indexed: 12/18/2022]
Abstract
OBJECTIVES CXCL12 is widely expressed, constitutive chemokine involved in tissue repair and regeneration, while the extent of its expression is important in various chronic inflammatory conditions. Involvement of DNA methylation in CXCL12 gene suppression (CXCL12) has been shown in malignancy and some autoimmune diseases. The aim of this study was to investigate whether the alterations in DNA methylation of CXCL12 are also involved in progression of periodontitis in combination with diabetes, as these chronic inflammatory conditions are strongly interrelated. DESIGN Study included 72 subjects divided in three groups: healthy control (C, n=21), periodontitis (P, n=29) and diabetes/periodontitis group (D/P, n=22). DNA extracted from epithelial cells obtained by sterile cotton swabs from buccal mucosa was subjected to methylation specific polymerase chain reaction (MSP) to obtain DNA methylation pattern of CXCL12 promoter. RESULTS CXCL12 promoter was predominantly unmethylated in all groups. However, increase in the frequency of the methylated form and increase in percent of methylation of CXCL12 promoter in periodontitis and diabetes/periodontitis group compared to control group were found, although without statistical significance. However, statistically significant increase in Tm of MSP products in diabetes/periodontitis group was observed. Correlation analysis revealed statistically significant relationship between the extent of DNA methylation of the CXCL12 promoter and periodontal parameters, as well as between DNA methylation of CXCL12 and glycosylated hemoglobin. CONCLUSION Presented results suggest that chronic inflammation contributes to the change of CXCL12 DNA methylation in buccal cells and that DNA methylation profile of CXCL12 promoter plays important role in development and progression of periodontal disease.
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Affiliation(s)
- Nevena Grdović
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Jovana Rajić
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Sanja Matić Petrović
- Department of Periodontology and Oral Medicine, School of Dental Medicine, University of Belgrade, Dr Subotica 8, 11000 Belgrade, Serbia
| | - Svetlana Dinić
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Aleksandra Uskoković
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Mirjana Mihailović
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Jelena Arambašić Jovanović
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Anja Tolić
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Ana Pucar
- Department of Periodontology and Oral Medicine, School of Dental Medicine, University of Belgrade, Dr Subotica 8, 11000 Belgrade, Serbia
| | - Jelena Milašin
- Institute of Human Genetics, School of Dental Medicine, University of Belgrade, Dr Subotica 8, 11000 Belgrade, Serbia
| | - Melita Vidaković
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia.
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Takai R, Uehara O, Harada F, Utsunomiya M, Chujo T, Yoshida K, Sato J, Nishimura M, Chiba I, Abiko Y. DNA hypermethylation of extracellular matrix-related genes in human periodontal fibroblasts induced by stimulation for a prolonged period with lipopolysaccharide derived from Porphyromonas gingivalis. J Periodontal Res 2015; 51:508-17. [DOI: 10.1111/jre.12330] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/05/2015] [Indexed: 12/25/2022]
Affiliation(s)
- R. Takai
- Division of Oral Medicine and Pathology; Department of Human Biology and Pathophysiology; Health Sciences University of Hokkaido; Ishikari-Tobetsu Hokkaido Japan
| | - O. Uehara
- Division of Disease Control and Molecular Epidemiology; Department of Oral Growth and Development; Health Sciences University of Hokkaido; Ishikari-Tobetsu Hokkaido Japan
| | - F. Harada
- Division of Oral Medicine and Pathology; Department of Human Biology and Pathophysiology; Health Sciences University of Hokkaido; Ishikari-Tobetsu Hokkaido Japan
| | - M. Utsunomiya
- Division of Oral Medicine and Pathology; Department of Human Biology and Pathophysiology; Health Sciences University of Hokkaido; Ishikari-Tobetsu Hokkaido Japan
| | - T. Chujo
- Division of Oral Medicine and Pathology; Department of Human Biology and Pathophysiology; Health Sciences University of Hokkaido; Ishikari-Tobetsu Hokkaido Japan
| | - K. Yoshida
- Division of Oral Medicine and Pathology; Department of Human Biology and Pathophysiology; Health Sciences University of Hokkaido; Ishikari-Tobetsu Hokkaido Japan
| | - J. Sato
- Division of Oral Medicine and Pathology; Department of Human Biology and Pathophysiology; Health Sciences University of Hokkaido; Ishikari-Tobetsu Hokkaido Japan
| | - M. Nishimura
- Division of Oral Medicine and Pathology; Department of Human Biology and Pathophysiology; Health Sciences University of Hokkaido; Ishikari-Tobetsu Hokkaido Japan
| | - I. Chiba
- Division of Disease Control and Molecular Epidemiology; Department of Oral Growth and Development; Health Sciences University of Hokkaido; Ishikari-Tobetsu Hokkaido Japan
| | - Y. Abiko
- Division of Oral Medicine and Pathology; Department of Human Biology and Pathophysiology; Health Sciences University of Hokkaido; Ishikari-Tobetsu Hokkaido Japan
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