Neutrophil extracellular traps are associated with inflammation in chronic airway disease
Background and objective Neutrophil extracellular traps (NETs) are web‐like structures comprising DNA and antimicrobial proteins, expelled from neutrophils during NETosis. Persistence of NETs can be pro‐inflammatory, yet their role in respiratory disease remains unclear. This study aimed to investig...
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| Veröffentlicht in: | Respirology (Carlton, Vic.) Vic.), 2016-04, Vol.21 (3), p.467-475 |
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| creator | Wright, Thomas K. Gibson, Peter G. Simpson, Jodie L. McDonald, Vanessa M. Wood, Lisa G. Baines, Katherine J. |
| description | Background and objective
Neutrophil extracellular traps (NETs) are web‐like structures comprising DNA and antimicrobial proteins, expelled from neutrophils during NETosis. Persistence of NETs can be pro‐inflammatory, yet their role in respiratory disease remains unclear. This study aimed to investigate the presence of NETs in sputum from patients with asthma and COPD, and the relationship of NETs with inflammatory phenotype and disease severity.
Methods
Induced sputum was collected from healthy controls, asthma and COPD patients. Extracellular DNA (eDNA) was quantified by PicoGreen. LL‐37, α‐defensins1–3, NE, IL‐1β and CXCL8 were quantified by ELISA. PAD4 and NLRP3 gene expression was performed using qPCR. NETs were imaged in sputum smears using immunofluorescence microscopy.
Results
Sputum eDNA and NET neutrophil antimicrobial proteins were significantly elevated in asthma and COPD compared with healthy controls. Levels of eDNA and NET components were significantly higher in neutrophilic versus non‐neutrophilic asthma and COPD. NETs were clearly visualized in sputum smears. PAD4 mRNA was upregulated in neutrophilic COPD. The level of eDNA was higher in severe asthma. High eDNA levels were associated with heightened innate immune responses, including elevated CXCL8 and IL‐1β, and NLRP3 gene expression in both COPD and asthma. Antimicrobial proteins and eDNA were positively correlated with airway neutrophils, and negatively correlated with lung function and symptoms.
Conclusion
NETs are present in the airways of subjects with asthma and COPD. Accumulation of excessive NETs was associated with activation of innate immune responses contributing to disease pathogenesis in chronic airway disease.
Neutrophil extracellular traps (NETs) are web‐like structures expelled from neutrophils that contain extracellular DNA and neutrophil proteins. We have shown that NETs accumulate in the airways in both asthma and COPD where they are associated with increased levels of pro‐inflammatory cytokines. |
| doi_str_mv | 10.1111/resp.12730 |
| format | Article |
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Neutrophil extracellular traps (NETs) are web‐like structures comprising DNA and antimicrobial proteins, expelled from neutrophils during NETosis. Persistence of NETs can be pro‐inflammatory, yet their role in respiratory disease remains unclear. This study aimed to investigate the presence of NETs in sputum from patients with asthma and COPD, and the relationship of NETs with inflammatory phenotype and disease severity.
Methods
Induced sputum was collected from healthy controls, asthma and COPD patients. Extracellular DNA (eDNA) was quantified by PicoGreen. LL‐37, α‐defensins1–3, NE, IL‐1β and CXCL8 were quantified by ELISA. PAD4 and NLRP3 gene expression was performed using qPCR. NETs were imaged in sputum smears using immunofluorescence microscopy.
Results
Sputum eDNA and NET neutrophil antimicrobial proteins were significantly elevated in asthma and COPD compared with healthy controls. Levels of eDNA and NET components were significantly higher in neutrophilic versus non‐neutrophilic asthma and COPD. NETs were clearly visualized in sputum smears. PAD4 mRNA was upregulated in neutrophilic COPD. The level of eDNA was higher in severe asthma. High eDNA levels were associated with heightened innate immune responses, including elevated CXCL8 and IL‐1β, and NLRP3 gene expression in both COPD and asthma. Antimicrobial proteins and eDNA were positively correlated with airway neutrophils, and negatively correlated with lung function and symptoms.
Conclusion
NETs are present in the airways of subjects with asthma and COPD. Accumulation of excessive NETs was associated with activation of innate immune responses contributing to disease pathogenesis in chronic airway disease.
Neutrophil extracellular traps (NETs) are web‐like structures expelled from neutrophils that contain extracellular DNA and neutrophil proteins. We have shown that NETs accumulate in the airways in both asthma and COPD where they are associated with increased levels of pro‐inflammatory cytokines.</description><identifier>ISSN: 1323-7799</identifier><identifier>EISSN: 1440-1843</identifier><identifier>DOI: 10.1111/resp.12730</identifier><identifier>PMID: 26804470</identifier><language>eng</language><publisher>Australia: Blackwell Publishing Ltd</publisher><subject>Aged ; asthma ; Chronic Disease ; chronic obstructive pulmonary disease ; extracellular deoxyribonucleic acid ; Extracellular Traps - metabolism ; Female ; Humans ; Immunity, Innate ; Inflammation - metabolism ; Inflammation - pathology ; Interleukin-8 - metabolism ; Male ; Middle Aged ; neutrophil ; neutrophil extracellular trap ; Neutrophils - pathology ; Respiratory Tract Diseases - immunology ; Respiratory Tract Diseases - metabolism ; Respiratory Tract Diseases - pathology ; Sputum - cytology ; Sputum - metabolism</subject><ispartof>Respirology (Carlton, Vic.), 2016-04, Vol.21 (3), p.467-475</ispartof><rights>2016 Asian Pacific Society of Respirology</rights><rights>2016 Asian Pacific Society of Respirology.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4360-b6c1da09ef8b3045e16b6668fc9c272e5dd5d72c263df3de10b723bbaddd8843</citedby><cites>FETCH-LOGICAL-c4360-b6c1da09ef8b3045e16b6668fc9c272e5dd5d72c263df3de10b723bbaddd8843</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fresp.12730$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fresp.12730$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27903,27904,45553,45554</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26804470$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wright, Thomas K.</creatorcontrib><creatorcontrib>Gibson, Peter G.</creatorcontrib><creatorcontrib>Simpson, Jodie L.</creatorcontrib><creatorcontrib>McDonald, Vanessa M.</creatorcontrib><creatorcontrib>Wood, Lisa G.</creatorcontrib><creatorcontrib>Baines, Katherine J.</creatorcontrib><title>Neutrophil extracellular traps are associated with inflammation in chronic airway disease</title><title>Respirology (Carlton, Vic.)</title><addtitle>Respirology</addtitle><description>Background and objective
Neutrophil extracellular traps (NETs) are web‐like structures comprising DNA and antimicrobial proteins, expelled from neutrophils during NETosis. Persistence of NETs can be pro‐inflammatory, yet their role in respiratory disease remains unclear. This study aimed to investigate the presence of NETs in sputum from patients with asthma and COPD, and the relationship of NETs with inflammatory phenotype and disease severity.
Methods
Induced sputum was collected from healthy controls, asthma and COPD patients. Extracellular DNA (eDNA) was quantified by PicoGreen. LL‐37, α‐defensins1–3, NE, IL‐1β and CXCL8 were quantified by ELISA. PAD4 and NLRP3 gene expression was performed using qPCR. NETs were imaged in sputum smears using immunofluorescence microscopy.
Results
Sputum eDNA and NET neutrophil antimicrobial proteins were significantly elevated in asthma and COPD compared with healthy controls. Levels of eDNA and NET components were significantly higher in neutrophilic versus non‐neutrophilic asthma and COPD. NETs were clearly visualized in sputum smears. PAD4 mRNA was upregulated in neutrophilic COPD. The level of eDNA was higher in severe asthma. High eDNA levels were associated with heightened innate immune responses, including elevated CXCL8 and IL‐1β, and NLRP3 gene expression in both COPD and asthma. Antimicrobial proteins and eDNA were positively correlated with airway neutrophils, and negatively correlated with lung function and symptoms.
Conclusion
NETs are present in the airways of subjects with asthma and COPD. Accumulation of excessive NETs was associated with activation of innate immune responses contributing to disease pathogenesis in chronic airway disease.
Neutrophil extracellular traps (NETs) are web‐like structures expelled from neutrophils that contain extracellular DNA and neutrophil proteins. We have shown that NETs accumulate in the airways in both asthma and COPD where they are associated with increased levels of pro‐inflammatory cytokines.</description><subject>Aged</subject><subject>asthma</subject><subject>Chronic Disease</subject><subject>chronic obstructive pulmonary disease</subject><subject>extracellular deoxyribonucleic acid</subject><subject>Extracellular Traps - metabolism</subject><subject>Female</subject><subject>Humans</subject><subject>Immunity, Innate</subject><subject>Inflammation - metabolism</subject><subject>Inflammation - pathology</subject><subject>Interleukin-8 - metabolism</subject><subject>Male</subject><subject>Middle Aged</subject><subject>neutrophil</subject><subject>neutrophil extracellular trap</subject><subject>Neutrophils - pathology</subject><subject>Respiratory Tract Diseases - immunology</subject><subject>Respiratory Tract Diseases - metabolism</subject><subject>Respiratory Tract Diseases - pathology</subject><subject>Sputum - cytology</subject><subject>Sputum - metabolism</subject><issn>1323-7799</issn><issn>1440-1843</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkEtP4zAUhS00iEdhMz9g5OUIKeBHbCfLEYKCQOUpHivLsW9UQ9IEO1HpvyelheWIu7n3St850jkI_abkkA5zFCC2h5QpTjbQDk1TktAs5b-GmzOeKJXn22g3xhdCCBdEbKFtJjOSporsoOcJ9F1o2qmvMLx3wVioqr4yAQ93G7EJgE2MjfWmA4fnvptiPysrU9em881seLCdhmbmLTY-zM0COx_BRNhDm6WpIuyv9wjdn57cH58ll1fj8-N_l4lNuSRJIS11huRQZgUnqQAqCyllVtrcMsVAOCecYpZJ7krugJJCMV4UxjmXDTFH6O_Ktg3NWw-x07WPyxBmBk0fNVWZYJyxnPwAVYJnLONiQA9WqA1NjAFK3QZfm7DQlOhl6XpZuv4sfYD_rH37ogb3jX61PAB0Bcx9BYv_WOnbk7vrL9NkpfGxg_dvjQmvWiquhH6cjPXF5Gl888gv9AP_AH1EnYA</recordid><startdate>201604</startdate><enddate>201604</enddate><creator>Wright, Thomas K.</creator><creator>Gibson, Peter G.</creator><creator>Simpson, Jodie L.</creator><creator>McDonald, Vanessa M.</creator><creator>Wood, Lisa G.</creator><creator>Baines, Katherine J.</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7T5</scope><scope>H94</scope></search><sort><creationdate>201604</creationdate><title>Neutrophil extracellular traps are associated with inflammation in chronic airway disease</title><author>Wright, Thomas K. ; Gibson, Peter G. ; Simpson, Jodie L. ; McDonald, Vanessa M. ; Wood, Lisa G. ; Baines, Katherine J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4360-b6c1da09ef8b3045e16b6668fc9c272e5dd5d72c263df3de10b723bbaddd8843</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Aged</topic><topic>asthma</topic><topic>Chronic Disease</topic><topic>chronic obstructive pulmonary disease</topic><topic>extracellular deoxyribonucleic acid</topic><topic>Extracellular Traps - metabolism</topic><topic>Female</topic><topic>Humans</topic><topic>Immunity, Innate</topic><topic>Inflammation - metabolism</topic><topic>Inflammation - pathology</topic><topic>Interleukin-8 - metabolism</topic><topic>Male</topic><topic>Middle Aged</topic><topic>neutrophil</topic><topic>neutrophil extracellular trap</topic><topic>Neutrophils - pathology</topic><topic>Respiratory Tract Diseases - immunology</topic><topic>Respiratory Tract Diseases - metabolism</topic><topic>Respiratory Tract Diseases - pathology</topic><topic>Sputum - cytology</topic><topic>Sputum - metabolism</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wright, Thomas K.</creatorcontrib><creatorcontrib>Gibson, Peter G.</creatorcontrib><creatorcontrib>Simpson, Jodie L.</creatorcontrib><creatorcontrib>McDonald, Vanessa M.</creatorcontrib><creatorcontrib>Wood, Lisa G.</creatorcontrib><creatorcontrib>Baines, Katherine J.</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Immunology Abstracts</collection><collection>AIDS and Cancer Research Abstracts</collection><jtitle>Respirology (Carlton, Vic.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wright, Thomas K.</au><au>Gibson, Peter G.</au><au>Simpson, Jodie L.</au><au>McDonald, Vanessa M.</au><au>Wood, Lisa G.</au><au>Baines, Katherine J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Neutrophil extracellular traps are associated with inflammation in chronic airway disease</atitle><jtitle>Respirology (Carlton, Vic.)</jtitle><addtitle>Respirology</addtitle><date>2016-04</date><risdate>2016</risdate><volume>21</volume><issue>3</issue><spage>467</spage><epage>475</epage><pages>467-475</pages><issn>1323-7799</issn><eissn>1440-1843</eissn><abstract>Background and objective
Neutrophil extracellular traps (NETs) are web‐like structures comprising DNA and antimicrobial proteins, expelled from neutrophils during NETosis. Persistence of NETs can be pro‐inflammatory, yet their role in respiratory disease remains unclear. This study aimed to investigate the presence of NETs in sputum from patients with asthma and COPD, and the relationship of NETs with inflammatory phenotype and disease severity.
Methods
Induced sputum was collected from healthy controls, asthma and COPD patients. Extracellular DNA (eDNA) was quantified by PicoGreen. LL‐37, α‐defensins1–3, NE, IL‐1β and CXCL8 were quantified by ELISA. PAD4 and NLRP3 gene expression was performed using qPCR. NETs were imaged in sputum smears using immunofluorescence microscopy.
Results
Sputum eDNA and NET neutrophil antimicrobial proteins were significantly elevated in asthma and COPD compared with healthy controls. Levels of eDNA and NET components were significantly higher in neutrophilic versus non‐neutrophilic asthma and COPD. NETs were clearly visualized in sputum smears. PAD4 mRNA was upregulated in neutrophilic COPD. The level of eDNA was higher in severe asthma. High eDNA levels were associated with heightened innate immune responses, including elevated CXCL8 and IL‐1β, and NLRP3 gene expression in both COPD and asthma. Antimicrobial proteins and eDNA were positively correlated with airway neutrophils, and negatively correlated with lung function and symptoms.
Conclusion
NETs are present in the airways of subjects with asthma and COPD. Accumulation of excessive NETs was associated with activation of innate immune responses contributing to disease pathogenesis in chronic airway disease.
Neutrophil extracellular traps (NETs) are web‐like structures expelled from neutrophils that contain extracellular DNA and neutrophil proteins. We have shown that NETs accumulate in the airways in both asthma and COPD where they are associated with increased levels of pro‐inflammatory cytokines.</abstract><cop>Australia</cop><pub>Blackwell Publishing Ltd</pub><pmid>26804470</pmid><doi>10.1111/resp.12730</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Respirology (Carlton, Vic.), 2016-04, Vol.21 (3), p.467-475 |
| issn | 1323-7799 1440-1843 |
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| source | MEDLINE; Wiley Online Library Journals Frontfile Complete |
| subjects | Aged asthma Chronic Disease chronic obstructive pulmonary disease extracellular deoxyribonucleic acid Extracellular Traps - metabolism Female Humans Immunity, Innate Inflammation - metabolism Inflammation - pathology Interleukin-8 - metabolism Male Middle Aged neutrophil neutrophil extracellular trap Neutrophils - pathology Respiratory Tract Diseases - immunology Respiratory Tract Diseases - metabolism Respiratory Tract Diseases - pathology Sputum - cytology Sputum - metabolism |
| title | Neutrophil extracellular traps are associated with inflammation in chronic airway disease |
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