| CD25+ natural regulatory T cells are critical in limiting innate and adaptive immunity and resolving disease following respiratory syncytial virus infection. | |
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MedLine Citation:
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PMID: 20573822 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Regulatory CD4(+) T cells have been shown to be important in limiting immune responses, but their role in respiratory viral infections has received little attention. Here we observed that following respiratory syncytial virus (RSV) infection, CD4(+) Foxp3(+) CD25(+) natural regulatory T-cell numbers increased in the bronchoalveolar lavage fluid, lung, mediastinal lymph nodes, and spleen. The depletion of CD25(+) natural regulatory T cells prior to RSV infection led to enhanced weight loss with delayed recovery that was surprisingly accompanied by increased numbers of activated natural killer cells in the lung and bronchoalveolar lavage fluid on day 8 postinfection. Increased numbers of neutrophils were also detected within the bronchoalveolar lavage fluid and correlated with elevated levels of myeloperoxidase as well as interleukin-6 (IL-6) and gamma interferon (IFN-gamma). CD25(+) natural regulatory T-cell depletion also led to enhanced numbers of proinflammatory T cells producing IFN-gamma and tumor necrosis factor alpha (TNF-alpha) in the lung. Despite these increases in inflammatory responses and disease severity, the viral load was unaltered. This work highlights a critical role for natural regulatory T cells in regulating the adaptive and innate immune responses during the later stages of lung viral infections. |
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Authors:
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Debbie C P Lee; James A E Harker; John S Tregoning; Sowsan F Atabani; Cecilia Johansson; Jürgen Schwarze; Peter J M Openshaw |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-06-23 |
Journal Detail:
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Title: Journal of virology Volume: 84 ISSN: 1098-5514 ISO Abbreviation: J. Virol. Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-08-06 Completed Date: 2010-09-16 Revised Date: 2011-07-25 |
Medline Journal Info:
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Nlm Unique ID: 0113724 Medline TA: J Virol Country: United States |
Other Details:
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Languages: eng Pagination: 8790-8 Citation Subset: IM |
Affiliation:
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Department of Respiratory Medicine and Centre for Respiratory Infection, National Heart and Lung Institute, Imperial College, St Mary's Campus, Norfolk Place, London W2 1PG, United Kingdom. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adaptive Immunity* Animals Cell Line Female Humans Immunity, Innate* Interferon-gamma / immunology Interleukin-2 Receptor alpha Subunit / immunology Interleukin-6 / immunology Lung / immunology, pathology Mice Mice, Inbred BALB C Respiratory Syncytial Virus Infections / immunology*, pathology, virology Respiratory Syncytial Viruses / immunology, physiology* T-Lymphocytes, Regulatory / immunology*, virology |
| Grant Support | |
ID/Acronym/Agency:
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087805/Z/08/Z//Wellcome Trust |
| Chemical | |
Reg. No./Substance:
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0/Interleukin-2 Receptor alpha Subunit; 0/Interleukin-6; 82115-62-6/Interferon-gamma |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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